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					       APEX 2003        Operating instructions

Control unit APEX 2003,   Type 07-3711-12../....; Type 07-3711-22../....
                Document No. 01-3711-7D0001 Version: 9 March 2011/Rev. 0
                                                                                          Operating Instructions


                                                                                                 APEX 2003 Control Unit


                                                                                                     Type: 07-3711-12../….
                                                                                                              07-3711-22../….




                                                                                        Document no.: 01-3711-7D0001
                                                                                         Version: 9 March 2011 / Rev. 0




                                                               Contents                                             Page
                                                                 English                                           1 - 94
                                                               Appendix                     EC Declaration of Conformity
                                                                                            EC Type Examination Certificate



BARTEC GmbH             Tel.:   +49 7931 597-0     info@bartec.de   Reservation:   Technical data subject to change without
Max Eyth-Strasse 16     Fax:    +49 7931 597-119    www.bartec.de                  notice. Changes, errors and misprints may not
97980 Bad Mergentheim                                                              be used as a basis for any claims for damages.
Deutschland
Table of Contents              APEX 2003 Control Unit
                               Type 07-3711-.2../....

1       Safety                                                                                    1
1.1     This Manual                                                                               1
1.1.1   Languages                                                                                 2
1.2     Handling the Product                                                                      2
1.3     Use in Accordance with the Intended Purpose                                               2
1.3.1   Exclusive Purpose                                                                         2
1.3.2   Improper Use                                                                              2
1.4     Owner/Managing Operator’s Obligations                                                     2
1.5     Safety Instructions                                                                       3
1.5.1   General Safety Instructionsnweise                                                         3
1.5.2   Safety Instructions for Operation                                                         3
1.6     Standards Conformed to                                                                    4
1.7     Ex Protection Type and Certification                                                      5
1.8     Warranty                                                                                  5
2       Product Description                                                                       6
2.1     APEX control unit                                                                         6
2.2     “Pressurized Enclosure” Type of Protection                                                6
2.3     Schematic Diagram of an Ex p Control                                                      7
2.4     APEX 2003 Control unit                                                                    8
2.4.1   APEX 2003.00I                                                                             8
2.4.2   APEX 2003.00                                                                              9
2.4.3   APEX 2003.00S                                                                            10
2.4.4   APEX 2003.002x                                                                           11
2.4.5   APEX 2003.002xS                                                                          12
2.4.6   APEX 2003.MV                                                                             13
2.4.7   APEX 2003.MVS                                                                            14
2.5     Sensor-Module                                                                            15
2.6     Pressure Monitorr                                                                        15
2.7     Adjustment Device                                                                        15
2.8     Purging Gas Valves                                                                       16
2.8.1   Digital Purging Gas Valve                                                                16
2.8.2   Proportional Purging Gas Valve                                                           16
2.9     Pressure Reducer with Pressure Gauge                                                     17
2.10    Purging Gas Nozzle                                                                       17
2.11    Rain Protection Cap                                                                      18
2.12    Rain Protection Roof                                                                     18
3       Installation                                                                             19
3.1     APEX 2003.00I Control unit                                                               19
3.1.1   Control configuration                                                                    19
3.1.2   Installation of the Control Unit                                                         20
3.1.3   Installation of the Pressure Monitor r                                                   21
3.1.4   Installation of the Atmosphere Measuring Point                                           22
3.1.5   Installation of the Sensor Module                                                        23
3.2     APEX 2003.00 Control Unit                                                                24
3.2.1   Configuration Control                                                                    24
3.2.2   Installation of the Control Unit                                                         25
3.3     Purging Gas Supply                                                                       26
3.3.1   Installation of the G1/4″ Purging Gas Supply                                             27
3.3.2   Installation of the G1/2″ Purging Gas Supply                                             28
3.4     APEX 2003.MV control unit                                                                29
3.4.1   Configuration control                                                                    29
3.4.2   Installation of the Control Unit                                                         30
3.5     Mounting the Rain Protection Cap                                                         31
3.6     Installation of the Rain Protection Roof                                                 31




                                                         Technical data subject to change without notice.
                                                                         Version: Revision 0/March 2011
APEX 2003 Control Unit                                              Table of Contents
Type 07-3711-.2../....

4           Connections                                                         32
4.1         Pneumatic Connections                                               32
4.1.1       APEX 2003.00I Control Unit with a Pressure Monitor                  32
4.1.2       APEX 2003.00I Control Unit with Two Pressure Monitors               33
4.2         Electrical Connections                                              34
4.2.1       Safety Instructions for the Electrical System                       34
4.2.2       Directions for Wiring the APEX 2003 Control Unit                    34
4.2.3       Electrical Connections to the APEX 2003 Control Unit                35
4.2.4       Sensor Module                                                       36
4.2.5       Bypass Key switch                                                   37
4.2.6       Temperature switch                                                  38
4.2.7       Separate ON/OFF Switch                                              38
4.2.8       Thermal Overload Disconnection                                      39
4.2.9       Programming Bridge                                                  39
4.2.10      Supply Voltage                                                      40
4.2.11      Purging Gas Valve                                                   40
4.2.12      Enabling the Pressurised Enclosure                                  41
4.2.13      Floating contacts                                                   41
4.2.14      RS485 Interface                                                     42
4.3         Purging Gas Supply                                                  42
5           Operation                                                           43
5.1         Setting of Parameters                                               43
5.2         Operation of the Sensor Module                                      44
5.3         Display on the Sensor Module                                        44
5.4         Changing of Values                                                  44
5.5         S1 Rotary Switch for “Display”                                      45
5.6         Rotary Switches S2 to S4 “Purge time”                               45
5.7         S5 “ON/OFF” Rotary Switch                                           46
5.8         K4 and K5 Relays                                                    46
6           Commissioning                                                       47
6.1         Calculation of the Differential Pressure                            48
6.2         Setting the Positive Operating Pressure                             49
6.3         Adjusting the Leakage Air Needle                                    50
6.4         Calculation of Purge Time                                           51
6.4.1       Example of a Purging Gas Calculation                                52
6.5         Checking the Purging Phase                                          53
6.6         Checking the Operating Phase                                        53
7           Operation                                                           54
7.1         Safety During Operation                                             54
7.2         Types of Purging Gas                                                54
7.3         Operating Phases in the Pressurised Enclosure                       55
7.3.1       Flow Diagram for the Operating Phases                               55
7.3.2       Preparatory Phase                                                   55
7.3.3       Purging Phase                                                       56
7.3.4       Operating Phase                                                     56
7.4         Bypass Operation                                                    57
8           Maintenance and Care                                                58
8.1         Inspection Table for Commissioning and Maintenance                  59
9           Malfunctioning and Troubleshooting                                  60
9.1         Fault Table                                                         60
9.2         Error Code Table                                                    62




Technical data subject to change without notice.
Version: Revision 0/March 2011
Table of Contents              APEX 2003 Control Unit
                               Type 07-3711-.2../....

10       Technical Data                                                                                      63
10.1     Aid for the Selection of the APEX Control Unit                                                      63
10.2     General Technical Data for the APEX Control Unit                                                    64
10.3     Supplementary Technical Data                                                                        64
10.3.1   APEX 2003.00I Control Unit                                                                          64
10.3.2   APEX 2003.00 Control Unit                                                                           65
10.3.3   APEX 2003.002x Control Unit                                                                         65
10.3.4   APEX 2003.MV control Unit                                                                           65
10.4     Sensor Module                                                                                       66
10.5     Technical Data for the Purging Gas Valve                                                            66
10.5.1   Digital Purging Gas Valve                                                                           66
10.5.2   Proportional Purging Gas Valve                                                                      67
10.6     Rain Protection Cap                                                                                 67
10.7     Rain Protection Roof                                                                                67
10.8     Technical Requirement for the Purging Gas                                                           68
11       Order Numbers                                                                                       69
11.1     APEX Control Units                                                                                  69
11.1.1   APEX 2003.00I Control Units                                                                         69
11.1.2   APEX 2003.00 Control Units                                                                          69
11.1.3   APEX 2003.00S Control Units                                                                         69
11.1.4   APEX 2003.002x Control Units                                                                        69
11.1.5   APEX 2003.002xS Control Units                                                                       70
11.1.6   APEX 2003.MV Control Units                                                                          70
11.1.7   APEX 2003.MVS Control Units                                                                         70
11.2     Accessories and Spare Parts                                                                         70
11.2.1   Pressure Monitor                                                                                    70
11.2.2   Sensor Module                                                                                       70
11.2.3   Digital Purging Gas Valve                                                                           71
11.2.4   Proportional Purging Gas Valve                                                                      71
11.2.5   Pressure Reducer                                                                                    71
11.2.6   Purging Gas Connection Set                                                                          71
11.2.7   Accessories                                                                                         72
11.2.8   Control Module                                                                                      72
12       Appendix                                                                                            73
12.1     Purging Gas Diagrams for the APEX Control Unit                                                      73
12.1.1   Purging gas diagram for the APEX 2003.00 control unit                                               73
12.1.2   Purging Gas Diagram for the APEX 2003.002x Control Unit                                             73
12.1.3   Purging Gas Diagram for the APEX 2003.MV Control Unit                                               74
12.2     Dimensions                                                                                          75
12.2.1   APEX 2003.00I                                                                                       75
12.2.2   APEX 2003.00                                                                                        75
12.2.3   APEX 2003.00S                                                                                       76
12.2.4   APEX 2003.002x / APEX 2003.002xS                                                                    76
12.2.5   APEX 2003.MV / APEX 2003.MVS                                                                        77
12.3     Borehole Patterns                                                                                   77
12.3.1   APEX 2003.00 Control Unit                                                                           77
12.3.2   APEX 2003.00 Control Unit2x                                                                         78
12.3.3   Sensor Module                                                                                       78
12.3.4   Roof as Protection Against Rain                                                                     78
12.4     Test and Assessment Report Form                                                                     79
13       Declaration of Conformity and Approvals                                                             81
13.1     EC Declaration of Conformity for the APEX Control unit                                              81
13.2     EC Declaration of Conformity for the Sensor Module                                                  82
13.3     EC Type Examination Certificate for the APEX Control Unit                                           83
13.4     EC Type Examination Certificate for the Sensor Module                                               87



                                                                     Technical data subject to change without notice.
                                                                                  Version: Revision 0/February 2011
APEX 2003 Control Unit                                                                                                    Safety
Type 07-3711-.2../....


1                Safety
1.1             This Manual
                                                             Operating Instructions

                                      It is essential to read and observe the contents of this documentation and this chapter in
                                      particular before you install and operate the APEX control unit.

                                      This manual contains the information required for using the control unit in accordance
                                      with its intended purpose. It is addressed to technically qualified personnel.
                                      Familiarity with and the technically perfect implementation of the safety instructions and
                                      warnings described in this manual are preconditions for safe installation and
                                      commissioning. The safety notes and warnings in this documentation are given in a
                                      general way and only qualified personnel will have the necessary specialised know-how
                                      to interpret and implement them correctly in specific individual cases.
                                      This manual is an integral part of the scope of supply even if for logistical reasons it can
                                      be ordered and delivered separately. If you need any further information, please ask the
                                      BARTEC branch that is near you or responsible for your area.
                                      Particularly important points in this documentation are marked with a warning symbol:

                                                                                DANGER

                                                    The DANGER sign draws attention to a danger which will lead to death or
                                                    serious injury if not avoided.

                                                                                WARNING

                                                    WARNING draws attention to a danger which can lead to death or serious
                                                    injury if it is not avoided.

                                                                                CAUTION

                                                    CAUTION draws attention to a danger which can lead to an injury if it is not
                                                    avoided.

                                                                            ATTENTION

                                        ATTENTION draws attention to measures to be taken to prevent damage to property.


                                                                                   Note

                                                    Important instructions and information on effective, economical and
                                                    environmentally compatible handling.




Technical data subject to change without notice.
Version: Revision 0/March 2011
                                                                                                                    Page 1 of 90
Safety                             APEX 2003 Control Unit
                                   Type 07-3711-.2../....




1.1.1    Languages
                                                                             Note

                                               The original operating instructions were written in German. All other
                                               available languages are translations of the original operating instructions.

                              The operating instructions are available in various languages. They are enclosed with
                              the product in the languages German, English, French, Italian, Spanish and Russian. If
                              you need any other languages, please ask BARTEC or request them when placing the
                              order.

1.2            Handling the Product
                              The product described in these operating instructions has been tested and left the
                              factory in perfect condition as regards meeting safety requirements. To maintain this
                              condition and ensure that this product operates perfectly and safely, it may be used only
                              in the manner described by the manufacturer. Appropriate transportation, suitable
                              storage and careful operation are also essential for the perfect and safe operation of this
                              product.
                              The APEX control unit must be mounted properly and securely onto the pressurised
                              enclosure if it is to work perfectly and correctly.

1.3            Use in Accordance with the Intended Purpose
1.3.1          Exclusive Purpose
                              The APEX control unit serves exclusively as a controlling and monitoring device for a
                              pressurised enclosure and is intended for use in Explosion Group II, Category 2G and
                              Temperature Classes T4 and T6.
                              The permissible operational data for the device being used must be observed.
1.3.2          Improper Use
                              Any other use is not in accordance with the intended purpose and can cause damage
                              and accidents. The manufacturer will not be liable for any use beyond that of its
                              exclusive intended purpose.

1.4            Owner/Managing Operator’s Obligations
                              The owner/managing operator undertakes to restrict permission to work on the APEX
                              control unit to people who:
                                     are familiar with the basic regulations on safety and accident prevention and have
                                      been instructed in the use of the APEX control unit;
                                     have read and understood the documentation, the chapter on safety and the
                                      warnings.
                                     The owner/managing operator must check that the safety regulations and
                                      accident prevention rules valid for the respective application are observed.




                                                                                  Technical data subject to change without notice.
Page 2 of 90                                                                                      Version: Revision 0/March2011
APEX 2003 Control Unit                                                                                                 Safety
Type 07-3711-.2../....



1.5             Safety Instructions
1.5.1           General Safety Instructionsnweise
                                            Do not wipe devices with a dry cloth or clean them in a hazardous area!
                                            Do not open devices in a hazardous area.
                                            General statutory regulations or directives relating to safety at work, accident
                                             prevention and environmental protection legislation must be observed, e.g. the
                                             German industrial health and safety ordinance (BetrSichV) or the applicable
                                             national ordinances.
                                            In view of the risk of dangerous electrostatic charging, appropriate clothing and
                                             footwear should be worn.
                                            Avoid the influence of heat that is higher or lower than the specified temperature
                                             range (see Chapter 10.2 “General Technical Data”).
                                            Keep the devices away from moisture.
1.5.2           Safety Instructions for Operation
                                      Upkeep
                                            For electrical systems the relevant installation and operating regulations must be
                                             complied with (e.g. Directive 99/92/EC, Directive 94/9/EC, German industrial
                                             health and safety ordinance (BetrSichV), the applicable national ordinances IEC
                                             60079-14 and the DIN VDE 0100 series)!
                                            The disposal of this equipment must comply with the national regulations on the
                                             disposal of waste.
                                      Maintenance
                                            Regular maintenance is not necessary if the device is operated correctly, in
                                             accordance with the installation instructions and environmental conditions. See
                                             Chapter 8.
                                      Inspection
                                            Under IEC 60079-19 and EN 60079-17, the owner/managing operator of
                                             electrical installations in hazardous areas is obliged to have these installations
                                             checked by a qualified electrician to ensure that they are in a proper condition.
                                      Repairs
                                            Repairs on explosion-protected operating equipment may be done only by
                                             authorised persons working in accordance with the latest developments in
                                             technology and using original spare parts. The relevant regulations must be
                                             observed.
                                      Commissioning
                                            Before commissioning, check that all components and documents are there.




Technical data subject to change without notice.
Version: Revision 0/March 2011
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Safety                       APEX 2003 Control Unit
                             Type 07-3711-.2../....



1.6            Standards Conformed to
                           The APEX control unit conforms to directive 94/9/EC for devices and protective systems
                           for use to their intended purpose in hazardous areas (ATEX Directive). Pursuant to this
                           directive, the following standards serve as a basis for the APEX control unit:

                            Standard                    Designation

                            EN 60079-0:2006             Electrical apparatus for explosive gas atmospheres -
                                                        Part 0: General Requirements

                            EN 60079-1:2007             Explosive atmospheres -
                                                        Part 1: Equipment protection by flameproof enclosures “d”


                            EN 60079-2:2007             Explosive atmospheres -
                                                        Part 2: Equipment protection by pressurised enclosure “p”

                            EN 60079-7:2007             Explosive atmospheres -
                                                        Part 7: Equipment protection by increased safety “e”

                            EN 60079-11:2007            Explosive atmospheres -
                                                        Part 11: Equipment protection by intrinsic safety “I”

                            EN 60079-26:2007            Explosive atmospheres -
                                                        Part 26: Equipment with equipment protection level (EPL)
                                                        Ga

                            DIN EN ISO 61511-           Functional Safety - Safety instrumented systems for the
                            1:2005                      process industry sector- Part 1:
                                                        Framework, definitions, system, hardware and software
                                                        requirements

                            DIN EN ISO 61511-           Functional Safety - Safety instrumented systems for the
                            2:2005                      process industry sector - Part 2:
                                                        Guidelines for the application of part 1

                            EN 61000-6-2:2005           Electromagnetic Compatibility (EMC) -
                                                        Part 6-2: Generic Standards -
                                                        Immunity for industrial environments

                            EN 61000-6-4:2007           Electromagnetic Compatibility (EMC) -
                                                        Part 6-4: Generic Standards -
                                                        Emission standard for industrial environments

                            EN 61010-1:2002-8           Safety requirements for electrical equipment for
                                                        measurement, control and laboratory use

                            EN 60529:1991 +             Degrees of protection provided by enclosures (IP code)
                            A1:2000




                                                                            Technical data subject to change without notice.
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APEX 2003 Control Unit                                                                                                   Safety
Type 07-3711-.2../....



1.7             Ex Protection Type and Certification
                                      The following markings showing Ex protection and certification are affixed to the device:
                                          II 2(1)G Ex ed ib [ia Ga px] IIC T4 / T6
                                      DMT 99 ATEX E 082

1.8             Warranty
                                                                                WARNING

                                                   Risk of death or serious injury if the control is modified or converted
                                                   without the manufacturer’s approval.
                                                   Explosion protection and the necessary stress tolerance and conformance to
                                                   safety requirements of the design and production are no longer assured
                                                   then.
                                                       Before making any modifications or implementing any conversions,
                                                        contact the manufacturer and obtain written approval.
                                                       Use only original spare parts and original expendable parts.

                                                                                     Note

                                                   Scope of warranty
                                                   The manufacturer grants a complete guarantee only and exclusively for the
                                                   spare parts ordered from the manufacturer.

                                      As a basic rule, our “General Conditions of Sale and Delivery” apply. These are available
                                      to the owner/managing operator at the latest on formation of a contract. Guarantee and
                                      liability claims for personal injury and damage to property are excluded if they are due to
                                      one or more of the following reasons:
                                            use of the APEX control unit for a purpose other than that for which it is intended.
                                            incorrect installation, commissioning, operation and maintenance of the APEX
                                             control unit.
                                            non-compliance with the instructions in the manual with respect to transport,
                                             storage, assembly, commissioning, operation and maintenance.
                                            structural modifications to the APEX control unit without our prior authorisation.
                                            inadequate monitoring of components that are subject to wear.
                                            repairs done incorrectly.
                                            disasters due to the effects of foreign matter or force majeure.
                                      We guarantee the APEX control unit and its accessories for a period of 1 year starting
                                      on the date of delivery from the Bad Mergentheim factory. This guarantee covers all
                                      parts of the delivery and is restricted to the replacement free of charge or the repair of
                                      the defective parts in our Bad Mergentheim factory. As far as possible, the delivery
                                      packaging should be kept for this purpose. In the event of such a claim, the goods must
                                      be returned to us after written arrangement. The customer cannot claim to have the
                                      repairs done at the site of installation.



Technical data subject to change without notice.
Version: Revision 0/March 2011
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Product Description          APEX 2003 Control Unit
                             Type 07-3711-.2../....


2              Product Description
2.1            APEX control unit
                            The APEX control unit with its system components is an automatic control for monitoring,
                            controlling and regulating pressurised enclosures in the hazardous areas of Zones 1 and
                            2.
                            The APEX control unit is suitable for all standard applications for pressurised enclosures.
                            The electrical installed parts inside the pressurised enclosure are enabled by the APEX
                            control unit directly or by an additional switching device.
                            Once the APEX control unit and the purging gas valve have been mounted on the
                            pressurised enclosure and the mains voltage and purging gas have been connected, the
                            pressurised system starts automatically.
                            The APEX control unit regulates the purging gas flow and the pressure inside the
                            enclosure during the purging phase.
                            When the operating phase is initiated, the components mounted in the pressurised
                            enclosures are automatically activated by the APEX control unit. The pressure inside the
                            pressurised enclosure is maintained automatically during the operating phase and any
                            leakage losses are compensated.


2.2            “Pressurized Enclosure” Type of Protection
                            The Ex p type of protection, referred to as “pressurised enclosure”, is based on the
                            measure of purging out any explosive gases that are in a closed enclosure and then
                            generating and maintaining a level of pressure that is higher than that of the ambient
                            atmosphere. As the pressure inside the cabinet is higher than the atmospheric pressure,
                            it is not possible at any time for explosive gases to penetrate the inside of the enclosure.
                            This creates an Ex-free area in which electrical devices that are not themselves
                            explosion-proof can be mounted and operated.
                            The APEX control unit described in these operating instructions functions in “pressurised
                            enclosure with leakage loss compensation” technology. Specifically this means that the
                            positive pressure in an enclosure is maintained by the addition of purging gas to
                            compensate for the leakage losses from the enclosure.
                            To ensure that an explosive atmosphere that has penetrated during downtimes cannot
                            become a danger, the enclosure must be flushed with purging gas (compressed air or
                            inert gas) before it is commissioned. The quantity depends on the inspection during first-
                            time operation. The rate of flow is measured or determined at the pressurised
                            enclosure’s outlet.
                            Since a safe condition in the enclosure is only reached when the operating phase is
                            started, it is necessary to use explosion-proof versions of the APEX control unit and its
                            system components such as sensor module, control module, pressure monitor and
                            purging gas valve.




                                                                              Technical data subject to change without notice.
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APEX 2003 Control Unit                                                                          Product Description
Type 07-3711-.2../....



2.3             Schematic Diagram of an Ex p Control

                                               




                                                                                                       




                                                                                                                      




                                        Item           Designation

                                                       Purging gas flow

                                                      Pressurised enclosure
                                                       APEX control unit
                                                      consisting of the components:
                                                             pressure monitor module with measuring orifice, spring
                                                               valve and flying spark barrier
                                                            sensor module with display and pressure measurement

                                                            control module
                                                       Purging gas valve with purging gas nozzle (purging flow
                                                      restriction)
                                                      Pressure reducer with pressure gauge




Technical data subject to change without notice.
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2.4            APEX 2003 Control unit
                                                                         Note

                                            Versions other than those listed here are available on request. These
                                            include e.g. stainless enclosures.

2.4.1          APEX 2003.00I
                               The APEX 2003.00I control unit is intended for mounting inside the pressurised
                               enclosure (e.g. on an internal mounting plate).
                               The sensor module for operating and displaying the system parameters is installed in
                               the pressurised enclosure by means of a mounting frame (e.g. control cabinet door).
                               The pressure monitor for measuring the purging gas flow is mounted in the wall of the
                               pressurised enclosure.

                               Construction:

                                                                    




                                                                     



                                                                     



                                                                    



                               Item     Designation                                  Function
                                       Control module                               Control unit
                                       PE bar                                       Earthing connection
                                       M20 cable gland, black                      Cable entry
                                       M20 cable gland, blue                       Cable entry Ex i

                                                                         Note

                                            The sensor module and pressure monitor are not included in the scope of
                                            supply.




                                                                             Technical data subject to change without notice.
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2.4.2       APEX 2003.00
                                        The APEX 2003.00 control unit is intended for mounting onto a pressurised enclosure
                                        (e.g. on the outer side wall).
                                        The sensor module and the pressure monitor for operating, displaying the system
                                        parameters and measuring the system pressure levels are integrated inside the control
                                        unit.



                                        Construction:

                                                                     




                                                                            



                                                                            




                                                           



                                         Item      Designation                               Function
                                                  Control module                           Control unit
                                                  Sensor module                            Measurement and display unit
                                                  Pressure monitor                         Functional unit positive pressure
                                                  PE bar                                   Earthing connection
                                                  Cable gland                              Cable entry
                                                  Breather                                 Condensation prevention




Technical data subject to change without notice.
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2.4.3    APEX 2003.00S
                         The APEX 2003.00 control unit is intended for mounting onto a pressurised enclosure
                         (e.g. on the outer side wall).
                         The sensor module and the pressure monitor for operating, displaying the system
                         parameters and measuring the system pressure levels are integrated inside the control
                         unit.
                         The additionally integrated bypass key switch makes it possible for the pressurised
                         enclosure to open without switching off the installed parts. With respect to operating the
                         pressurised enclosure in the bypass, observe the points in Chapter 4.2.5 “Bypass Key
                         Switch”.

                         Construction:

                                                     




                                                                      




                                                                      



                                                                      


                                         


                         Item       Designation                                   Function
                                Control module                                  Control unit
                                Sensor module                                   Measurement and display unit
                                Pressure monitor                                Functional unit positive pressure
                                PE bar                                          Earthing connection
                                Cable gland                                     Cable entry
                                Breather                                        Condensation prevention
                                Bypass key switch                               Activation bypass operation




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2.4.4       APEX 2003.002x
                                        The APEX 2003.002x control unit is intended for mounting onto a pressurised enclosure
                                        (e.g. on the outer side wall).
                                        The sensor module and the pressure monitor for operating, displaying the system
                                        parameters and measuring the system pressure levels are integrated inside the control
                                        unit.
                                        The integration of two pressure monitors allows large pressurised enclosures to be
                                        purged in a short time.

                                        Construction:

                                                                     




                                                                                   



                                                                                   


                                                           


                                         Pos        Designation                              Function
                                                  Control module                           Control unit
                                                  Sensor module                            Measurement and display unit
                                                  Pressure monitor                         Functional unit positive pressure
                                                  PE bar                                   Earthing connection
                                                  Cable gland                              Cable entry
                                                  Breather                                 Condensation prevention




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2.4.5    APEX 2003.002xS
                           The APEX 2003.002xS control unit is intended for mounting onto a pressurised
                           enclosure (e.g. on the outer side wall).
                           The sensor module and the pressure monitor for operating, displaying the system
                           parameters and measuring the system pressure levels are integrated inside the control
                           unit.
                           The integration of two pressure monitors allows large pressurised enclosures to be
                           purged in a short time.
                           The additionally integrated bypass key switch allows the pressurised enclosure to open
                           without turning off the installed parts. When operating the pressurised enclosure in
                           bypass mode, observe the points in Chapter 4.2.5 “Bypass Key Switch“.

                           Construction:

                                                      




                                                                      


                                                                      



                                                                      


                                           


                           Item       Designation                                 Function
                                  Control module                                Control unit
                                  Sensor module                                 Measurement and display unit
                                  Pressure monitor                              Functional unit positive pressure
                                  PE bar                                        Earthing connection
                                  Cable gland                                   Cable entry
                                  Breather                                      Condensation prevention
                                  Bypass key switch                             Activation bypass operation




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2.4.6       APEX 2003.MV
                                        The APEX 2003.MV control unit is intended for remote mounting, at a distance from the
                                        pressurised enclosure.
                                        The sensor module and the pressure monitor for operating, displaying the system
                                        parameters and measuring the system pressure levels are integrated inside the control
                                        unit.
                                        Due to the remote mounting of the control unit it is possible to purge the pressurised
                                        enclosure up to a volume of 70 litres and at a distance of up to 10 metres.

                                        Construction:

                                                                       




                                                                                             

                                                                                             



                                                                                   



                                                                                   

                                                                        
                                                            


                                         Item       Designation                              Function
                                                   Control module                           Control unit
                                                   Sensor module                            Measurement and display unit
                                                   Pressure monitor                         Functional unit positive pressure
                                                   PE bar                                   Earthing connection
                                                   Cable glands                             Cable entry
                                                   Breather                                 Condensation prevention
                                                   Purging gas valve                        Purging gas regulation
                                                   Purging gas input                        Purging gas supply
                                                   Purging gas connections                  Purging gas supply




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2.4.7    APEX 2003.MVS
                         The APEX 2003.MVS control unit is intended for remote mounting, at a distance
                         from the pressurised enclosure.
                         The sensor module and the pressure monitor for operating, displaying the
                         system parameters and measuring the system pressure levels are integrated
                         inside the control unit.
                         The remote mounting of the control unit makes it possible to purge pressurised
                         enclosures up to a volume of 70 litres and at a distance of up to 10 metres.
                         The additionally integrated bypass key switch allows the pressurised enclosure to open
                         without turning off the installed parts. When operating the pressurised enclosure in
                         bypass observe the points in Chapter 4.2.5 “Bypass Key Switch”.

                         Aufbau:

                                                        

                                                                              


                                                                               

                                                                               



                                                                    



                                                                    

                                                             
                                             

                         Item        Designation                                Function
                                    Control module                            Control unit
                                    Sensor module                             Measurement and display unit
                                    Pressure monitor                          Functional unit positive pressure
                                    PE bar                                    Earthing connection
                                    Cable glands                              Cable entry
                                    Breather                                  Condensation prevention
                                    Purging gas valve                         Purging gas regulation
                                    Purging gas input                         Purging gas feed
                                    Purging gas connections                   Purging gas supply
                                    Bypass key switch                         Activation of bypass operation




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2.5             Sensor-Module
                                        The sensor module is designed for use in APEX controls.
                                        It takes over the measuring functions for the system-specific pressure levels and the
                                        display of parameters and pressure levels.
                                        Further technical data can be found in the data sheet.
                                        The sensor module is connected directly to an APEX control unit, which provides it with
                                        the necessary intrinsically safe voltage. The signals measured are passed onto the
                                        control module with intrinsic safety.
                                        Along with the APEX 2003.00I control unit, the sensor module must be connected to a
                                        control module by means of the 12-wire sheathed lead.
                                        In all other versions of the APEX control unit, the sensor module is integrated and wired
                                        inside the control unit as standard.


2.6             Pressure Monitor
                                        The pressure monitor has two functions inside the control. Firstly, it serves as a
                                        pressure control valve, which opens if the internal pressure is too high and reduces the
                                        excess pressure. Secondly, an orifice is integrated in the pressure monitor through
                                        which the differential pressure is measured by means of the sensors integrated in the
                                        sensor module.
                                        In conjunction with the APEX 2003.00I control unit, this must be mounted separately in
                                        the pressurised enclosure. It is also necessary to connect measuring hoses between
                                        the pressure monitor and sensor.
                                        In all other versions of the APEX control unit the pressure monitor is integrated and
                                        wired inside the control unit as standard.



2.7             Adjustment Device
                                        To change parameters and switching levels, the adjustment device must be connected
                                        to the control module.
                                        Values which are changed without a connected programming bridge are not accepted
                                        by the APEX control unit.




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2.8         Purging Gas Valves
                                                                     WARNING

                                          Death or risk of injury when the purging gas valve is operated with an
                                          APEX control unit that has inadequate fusing.
                                          The control module can be destroyed. The explosion protection is no longer
                                          assured.
                                              Operate the G1/4″ digital purging gas valve and proportional purging
                                               gas valve only with a 7-W control unit.
                                              Operate the G3/8″ proportional purging gas valve only with a 15-W
                                               control unit.
                                              Check the compatibility of the purging gas valve and the control
                                               module.

2.8.1       Digital Purging Gas Valve

                             The digital purging gas valve controls the purging gas supply.
                             This is a servo-assisted solenoid valve and its function is to introduce purging gas into a
                             pressurised enclosure for Zone 1 or Zone 2.
                             Here, the digital purging gas valve is controlled by the APEX control unit to allow the
                             purging gas valve to open to purge the pressurised enclosure and close again when the
                             purging is finished. The integrated, adjustable leakage air needle compensates for the
                             loss through leakage in the pressurised enclosure.
                             The necessary fusing for the purging gas valve is mounted inside the control module.
                             The relevant technical data can be found in the data sheet.

2.8.2       Proportional Purging Gas Valve

                             The proportional purging gas valve controls the purging gas feed.
                             This is a direct-action proportional solenoid valve and it is used to introduce purging gas
                             into a pressurised enclosure in Zone 1 or Zone 2.
                             Here, the proportional purging gas valve is controlled by the APEX control unit to allow
                             the purging gas valve to open to purge the pressurised enclosure and close again when
                             the purging is finished. Any loss occurring through leakage is compensated by the
                             purging gas valve opening and closing to a slight degree.
                             The proportional valve technology compensates for the actual loss through leakage in
                             the pressurised enclosure.
                             The necessary fusing for the purging gas valve is mounted inside the control module.
                             The relevant technical data can be found in the data sheet.




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2.9             Pressure Reducer with Pressure Gauge
                                                                             ATTENTION
                                        Damage to property when the maximum permissible internal pressure is
                                        exceeded in the pressurised enclosure.
                                        If the supply pressure is set at too high a level, there is a risk of destroying the
                                        pressurised enclosure.
                                             Mark the supply pressure on the pressure gauge.
                                             The supply pressure setting on the pressure gauge must be checked regularly.
                                             Lock the pressure reducer.

                                        The upstream pressure reducer is a diaphragm pressure regulator with secondary
                                        venting for lowering the pressure of externally supplied purging air .
                                        The levels for the pressure reducer are set by means of a hand wheel and can be read
                                        on the pressure gauge.
                                        Pressure reducers are available in sizes G1/4″ and G1/2″ for the supply to the
                                        pressurised enclosure.
                                        The relevant technical data can be found in the data sheet.
                                        To select the pressure reducer, see Chapter 3.3 “Purging Gas Supply”.


2.10            Purging Gas Nozzle
                                                                             ATTENTION
                                        Damage to property caused by the absence of a purging gas nozzle.
                                        The build-up of internal pressure can give rise to the risk of excessive stress on the
                                        pressurised enclosure.
                                             Make sure there is a purging gas nozzle there.

                                        The purging gas nozzle serves to mechanically restrict the maximum flow.
                                        This is necessary to restrict the maximum flow if the purging gas valve is defective.




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2.11        Rain Protection Cap
                                                              ATTENTION
                         Malfunctioning when a rain protection cap is used on APEX control units that
                         have an orifice larger than 15 mm.
                         The rain protection cap may be mounted only on APEX control units with an orifice of up
                         to 15 mm. Using this cap on APEX control units with an orifice larger than 15 mm can
                         impair functioning.
                             If the orifice size is larger than 15 mm, a roof must be mounted instead of a cap to
                              protect the pressure monitor outlets against rain.

                         The rain protection cap is a screw-on protection for the flying spark barrier against dust
                         and drops.
                         The rain protection cap is made of plastic (PVC black) and can be mounted onto the
                         pressure monitor on the APEX control unit.
                         The rain protection cap can be used on control units and pressure monitors with an
                         internal orifice of up to 15 mm.


2.12        Rain Protection Roof
                         The rain protection roof provides additional protection against rain drops for APEX
                         control units.
                         It is mounted at a distance of ca. 10 mm from the pressure monitor outlet above the
                         control unit on the pressurised enclosure.




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3                Installation
3.1             APEX 2003.00I Control unit
3.1.1           Control configuration
                                                                                DANGER

                                                      Death or serious physical injury if the purging gas supply and the
                                                      pressure monitor outlet are installed incorrectly.
                                                      This interferes with the purging action in the pressurised enclosure. Gas
                                                      bubbles can form inside the pressurised enclosure and lead to an explosion
                                                      when the installed parts are activated.
                                                          The purging gas valve and the pressure monitor must not be
                                                           mounted exactly opposite.
                                                          For opposite mounting, use angled pieces or other mechanical aids
                                                           to direct the flow of purging gas to allow smooth purging.

                                                                                                                           
                                               



                                                                                                                          



                                               

                                                                                                                           




                                              



                                              



                                        Item.      Designation                                   Function
                                                  Pressurised enclosure                         Ex p operating equipment
                                                  APEX 2003.00I control unit                    Ex p control
                                                  Sensor module                                 Measurement and display unit
                                                  Pressure monitor                              Functional unit positive
                                                  Atmosphere measuring point                    Measurement of atmospheric
                                                                                                 pressure
                                                                                                 pressure
                                                  Pressure measuring lines                      System hoses
                                                  Purging gas valve                             Purging gas feed
                                                  Pressure reducer                              Setting for purging gas
                                                                                                 pressure



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Installation                      APEX 2003 Control Unit
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3.1.2    Installation of the Control Unit
                              To install the APEX2003.00I control unit inside the pressurised enclosure, the top lid
                              must be removed. The APEX control unit can be screwed to the mounting plate in the
                              pressurised enclosure using the mounting holes provided for that purpose.
                              Assembly drawing:
                              Mounting material required when mounting using threaded holes:

                              Quantity          Material

                              4                 Screw M6 x 30




                              Quantity          Material

                              4                 Screw M6 x 35

                              4                 Washer M6

                              4                 Retaining ring M6

                              4                 Nut M6


                                                                              Note
                                                   -     The relevant borehole pattern for affixing the APEX control unit
                                                         can be found in the appendix to these operating instructions.
                                                   -     The mounting material for the APEX control unit is not included in
                                                         the scope of supply.




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3.1.3       Installation of the Pressure Monitor r
                                                                                   WARNING
                                                     Death or risk of injury due to excessive internal pressure in the
                                                     pressurised enclosure.
                                                     The enclosures can be destroyed.
                                                            Make sure the outlet threaded connection is not covered from the
                                                             outside.
                                                            Check if the direction of flow in the pressure monitor is from the
                                                             inside to the outside.

                                      A through hole of 37 mm in the wall of the pressurised enclosure is required for
                                      mounting the pressure control device. The outlet threaded connection is used to facilitate
                                      the attachment.
                                      Procedure:
                                            Make a 37-mm-diameter borehole at the mounting position provided for that
                                             purpose in the pressurised enclosure.
                                            Unscrew the outlet threaded connection out of the pressure monitor enclosure.

                                       Installation step

                                                       Put the pressure monitor enclosure on, positioning it so that the air in the
                                                       pressurised enclosure can flow outwards.




                                       Installation step

                                                       Screw the pressure monitor module together. Tighten the outlet threaded
                                                       connection and the pressure monitor enclosure so that the pressure
                                                       monitor module is positioned securely.




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3.1.4    Installation of the Atmosphere Measuring Point
                                                                   ATTENTION
                              Faulty measurement of the operating pressure levels due to dirt on the
                              atmosphere measuring point.
                              The pressurised enclosure is then deactivated.
                                 Check the atmosphere measuring point at regular intervals for dirt.

                            In order for the APEX2003.00I control unit to be able to measure the operating pressure
                            levels correctly, an atmosphere measuring point must be set. The scope of supply for
                            the sensor module contains all the parts required for this.


                            Procedure:

                                 Make a Ø 9.6-mm-diameter borehole at the mounting position provided for that
                                  purpose in the pressurised enclosure.
                                 Put the screw plug () with a 1-mm-diameter borehole and the sealing ring ()
                                  through the borehole.
                                 Put the second sealing ring () on the inside over the threading projecting out of
                                  the hole.
                                 Screw the sleeve () onto the threading.
                                 Screw the quick plug-in connector () into the sleeve ().


                            The following diagram is intended to clarify the installation procedure:


                                                            
                                                                           
                                   




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3.1.5       Installation of the Sensor Module
                                      In order for the APEX control unit to be able to measure and display the operating
                                      pressure levels, the sensor module has to be installed in the pressurised enclosure. The
                                      sensor module also serves to operate the control module.


                                      Procedure:

                                            Make a cut-out at the mounting location provided for that purpose as shown in
                                             Chapter 12.3.3 “Sensor Module“.
                                            Put the sensor module () into the cut-out.
                                            Use 4 nuts (M4) () with Schnorr® safety washers to fasten the sensor module.
                                            Earth the sensor module by means of the threaded bolts () and the centre
                                             threaded bolt ().


                                      The following diagram is intended to clarify the installation procedure:



                                                                                    
                                                   


                                                                                   




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Installation                     APEX 2003 Control Unit
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3.2            APEX 2003.00 Control Unit
3.2.1          Configuration Control
                                                                        DANGER

                                              Death or serious physical injury if the purging gas supply and the
                                              pressure monitor outlet are installed incorrectly.
                                              This interferes with the purging action in the pressurised enclosure. Gas
                                              bubbles can form inside the pressurised enclosure and lead to an explosion
                                              when the installed parts are activated.
                                                  The purging gas valve and the pressure monitor must not be
                                                   mounted exactly opposite.
                                                  For opposite mounting, use angled pieces or other mechanical aids
                                                   to direct the flow of purging gas to allow smooth purging.




                                                                                             




                                       
                                       



                                Item       Designation                                    Function
                                          Pressurised enclosure                          Ex p operating equipment
                                          APEX 2003.00 control unit                      Ex p control
                                          Purging gas valve                             Purging gas feed
                                        Pressure reducer                                Setting for purging gas
                                                                                         pressure
                               The APEX control unit for external mounting is mounted on an external side of the
                               pressurised enclosure. The sensor module and the pressure monitor are mounted inside
                               the APEX control unit and they therefore do not need to be mounted separately.




                                                                                Technical data subject to change without notice.
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3.2.2       Installation of the Control Unit
                                      The APEX2003.00 control unit is intended for mounting onto the outside of the
                                      pressurised enclosure. For this purpose the APEX control unit is mounted onto the
                                      pressure monitor by means of the outlet threaded connection and two M6 screws to
                                      prevent twisting.
                                      The borehole patterns for affixing the APEX control unit can be found in the appendix.
                                      Depending on which version of the APEX control is used, one or two 37-mm-diameter
                                      holes for the pressure monitor outlets must be bored in the pressurised enclosure.

                                       Quantity      Material

                                       2             Screw M6 x 35

                                       2             Washer M6

                                       2             Retaining ring M6

                                       2             Nut M6



                                                                                  NOTE

                                                        -     The relevant borehole pattern for affixing the APEX control unit
                                                              can be found in the appendix to these operating instructions.
                                                        -     The mounting material for the APEX control unit is not included in
                                                              the scope of supply.




Technical data subject to change without notice.
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Installation                 APEX 2003 Control Unit
                             Type 07-3711-.2../....



3.3            Purging Gas Supply
                                                                               ATTENTION
                            Not enough purging gas because purging gas supply lines are too small.
                            The insufficient flow prevents the pressurised enclosure from starting operation.
                                 Adapt the internal diameter of the purging gas supply line to the required flow.


                                                                               ATTENTION
                            Damage to property caused by the absence of a purging gas nozzle.
                            The build-up of internal pressure can give rise to the risk of excessive stress on the pressurised enclosure.

                                 Check the purging gas nozzle.

                           The purging gas supply is composed of a pressure reducer, a purging gas valve and a
                           purging gas nozzle. Depending on the capacity of the pressurised enclosure, the purging
                           gas supply is available in the sizes G1/4“ or G1/2“.
                           The purging gas feed must be selected in accordance with the following table.

                                    Capacity                   Pressure                Pressure reducer                  Purging gas nozzle

                                  < 50 litres                      2 bar                             1/4″                          2.8 mm
                                  50 to
                                                                   2 bar                             1/4″                          3.9 mm
                                  300 litres
                                  300 to
                                                                   2 bar                             1/2″                          4.5 mm
                                  700 litres
                                  700 to 1,000
                                                                   3 bar                             1/2″                          4.5 mm
                                  litres
                                  From 1,000
                                                                   3 bar                             1/2″                          5.5 mm
                                  litres on
                           (The levels specified in the table are references values and can vary.)

                           The pressure reducer to lower the supplied purging gas pressure is mounted on the
                           outside of the pressurised enclosure. The purging gas valve, which releases the purging
                           gas, is mounted inside the pressurised enclosure. The purging gas nozzle restricts the
                           maximum flow of the purging gas and accordingly prevents pressure increasing to the
                           maximum level when a purging gas valve is defective.
                           The following illustrates the assembly of the purging gas feed. The required mounting
                           material is included in the scope of supply.




                                                                                                Technical data subject to change without notice.
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3.3.1       Installation of the G1/4″ Purging Gas Supply
                                      The purging gas feed must be installed carefully. To ensure that the screwed parts are
                                      leak-tight, they can be sealed with Teflon® tape.
                                      Care must be taken to prevent the penetration of foreign particles during assembly.


                                                                                                          
                                                                                             




                                                     Borehole dia. 17 mm
                                            
                                                                             


                                      Procedure:
                                            Make a 17-mm-diameter borehole at the mounting position provided for that
                                             purpose on the pressurised enclosure ().
                                            Use the reducing sleeve () and the sealing washers () to mount the purging
                                             gas valve () on the pressurised enclosure.
                                            Screw the purging gas nozzle () in at outlet of the purging gas valve ().
                                            Screw the detachable double threaded nipple () into the reducing sleeve ().
                                            Screw the G1/4″ pressure reducer () onto the detachable double threaded
                                             nipple ().


                                        Item        Material
                                                   Purging gas nozzle with borehole
                                                   Purging gas valve
                                                   Sealing washer
                                                   Pressurised enclosure
                                                   G1/4″i / G3/8″ reducing sleeve
                                                   Detachable double threaded nipple G1/4″, both sides
                                                   G1/4″ pressure reducer




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3.3.2           Installation of the G1/2″ Purging Gas Supply
                                The purging gas feed must be installed carefully. To ensure that the screwed parts are
                                leak-tight, they can be sealed with Teflon® tape.
                                Care must be taken to prevent the penetration of foreign particles during assembly.



                                                                                                            
                                                                                          
                                     




                                                                                       

                                                                    Borehole dia. Ø 21 mm




                                Procedure:
                                    Make a 21-mm-diameter borehole at the mounting position provided for that
                                     purpose on the pressurised enclosure ().
                                    Use the reducing sleeve ()and the sealing washers ()to mount the G1/2″
                                     pressure reducer () onto the pressurised enclosure.
                                    Screw the detachable double threaded nipple () into the reducing sleeve ().
                                    Screw the purging gas valve () onto the detachable double threaded nipple
                                     ().
                                    Screw the purging gas nozzle () in at the outlet of the purging gas valve ().


                                 Item          Material
                                              Purging gas nozzle
                                              Purging gas valve
                                              Detachable G3/8″ bulkhead nipple
                                              G3/8″i / G1/2″a reducing sleeve
                                              Sealing washer
                                              Pressurised enclosure
                                              G1/2″ pressure reducer




                                                                                      Technical data subject to change without notice.
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3.4             APEX 2003.MV control unit
3.4.1           Configuration control
                                                                                  DANGER

                                                       Death or serious physical injury if the purging gas supply and the
                                                       pressure monitor outlet are installed incorrectly.
                                                       This interferes with the purging action in the pressurised enclosure. Gas
                                                       bubbles can form inside the pressurised enclosure and lead to an explosion
                                                       when the installed parts are activated.
                                                          The purging gas valve and the pressure monitor must not be mounted
                                                           exactly opposite.
                                                          For opposite mounting, use angled pieces or other mechanical aids to
                                                           direct the flow of purging gas to allow smooth purging.




                                                                                                                    




                                                   
                                                                                                                              



                                        Item       Designation                                   Function
                                                  Pressurised enclosure                         Ex p operating equipment
                                                  APEX 2003.MV control unit                     Control
                                                  Purging gas connection                        Purging gas feed
                                                  Pressure reducer                              Setting for purging gas pressure

                                      The system components in the “Remote Installation of the Control Unit” version should
                                      be selected to ensure that the purging gas feed purges the pressurised enclosure well.
                                      The components pressure reducer, purging gas valve and sensor module are integrated
                                      in the control unit and they therefore do not need to be mounted separately.
                                      G 1/4″ screw connections with internal thread are attached to the APEX control unit as
                                      standard for the purging gas feed and return.
                                      The purging gas lines are to be produced with a hose with an internal diameter of at
                                      least 8 mm and a maximum length of 10 m.




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3.4.2    Installation of the Control Unit
                              To install the APEX2003.MV control unit on a wall or mounting plate, the top lid must be
                              removed and the APEX control unit can be screwed onto a wall or mounting plate by
                              means of the mounting holes provided for that purpose.
                              Assembly drawing:

                              Quantity          Material

                              4                 Screw M6 x 30




                              Quantity          Material

                              4                 Screw M6 x 35

                              4                 Washer M6

                              4                 Retaining ring M6

                              4                 Nut M6

                                                                            Note

                                                 - The relevant borehole pattern for affixing the APEX control unit can be
                                                   found in the appendix to these operating instructions.
                                                 - The mounting material for the APEX control unit is not included in the
                                                   scope of supply.




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3.5             Mounting the Rain Protection Cap
                                                                                ATTENTION
                                           Malfunctioning when the rain protection cap is used on non-approved APEX
                                           control units.
                                           The rain protection cap may be mounted only on APEX control units with an orifice of up
                                           to 15 mm. Using this cap on APEX control units with an orifice larger than 15 mm can
                                           impair functioning.
                                              If the orifice size is larger than 15 mm, a roof must be mounted instead of a cap to
                                               protect the pressure monitor outlets against rain.

                                      The rain protection cap prevents the flying spark barrier getting dirty. It can then be
                                      mounted onto the APEX control unit’s pressure monitor outlet in accordance with the
                                      following instructions.
                                      Step 1:



                                                              Put the rain protection cap onto the pressure monitor outlet.




                                      Step 2:



                                                              Twist the rain protection cap into the pressure monitor.




3.6             Installation of the Rain Protection Roof
                                      The rain protection roof prevents the penetration of rain drops through the pressure
                                      monitor outlet into the pressurised enclosure.
                                      In accordance with the following instructions, the rain protection roof can be mounted
                                      above the APEX control unit.
                                      Procedure:
                                               Make two 6.5-mm-diameter boreholes at the mounting position provided for that
                                                purpose on the pressurised enclosure as shown in the borehole pattern (see
                                                Chapter 12.3.4 “Roof as Protection against Rain“).

                                               Put on the rain protection roof by inserting the fastening bolts into the two
                                                boreholes.
                                               Using M6 washers and M6 nuts, screw the bolts securely from the back onto the
                                                pressurised enclosure.




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4               Connections
4.1         Pneumatic Connections
                            When using an APEX 2003.00I control unit, measuring lines must be produced between
                            the atmospheric pressure, the pressure monitor and the sensor module to ensure correct
                            functioning.
                            These measuring lines are connected as standard in the APEX 2003.00 control unit,
                            APEX 2003.002x and APEX 2003.MV and they therefore do not need to be mounted
                            separately.
4.1.1       APEX 2003.00I Control Unit with a Pressure Monitor

                                                                 ATTENTION
                             Faulty measurement of the pressure levels because of bent and squeezed lines.
                             The APEX control starts to malfunction.
                                 Check that the lines have been laid properly.




                             Sensor module             Target                               Function
                             A                         Atmosphere measuring point           Measurement of the
                             H                         -                                    environment of the
                                                                                            Measurement
                             L                         Pressure monitor “L”                 enclosure
                                                                                            Measurement after orifice

                            Functions in the same way as the APEX 2003.00 control unit.
                            The “A” connections (atmosphere) must be produced with the atmosphere measuring
                            point in the wall of the pressurised enclosure.
                            The “L” (low-pressure ) connection must be joined to the pressure monitor.
                            These measuring points allow the sensor module to measure the operating pressure
                            levels and the flow in the pressurised enclosure correctly.
                            There are quick plug-in connectors available at the sensor module and at the pressure
                            monitor. These must be connected together by means of a measurement hose with an
                            outside diameter of 4 mm as shown in the above diagram.




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4.1.2       APEX 2003.00I Control Unit with Two Pressure Monitors
                                                                             ATTENTION
                                        Faulty measurement of the pressure levels because of bent and squeezed lines.
                                        The APEX control starts to malfunction.
                                             Check that the lines have been laid properly.




                                        Sensor module            Target                           Function
                                        A                        Atmosphere measuring point       Measurement of the
                                        H                        -                                environment of the
                                                                                                  Measurement
                                        L                        Pressure monitor “L”             enclosure
                                                                                                  Measurement after orifice

                                      Functions in the same way as the APEX 2003.002x control unit.
                                      The “A” connections (atmosphere) must be produced with the atmosphere measuring
                                      point in the wall of the pressurised enclosure.
                                      The “L” (low-pressure ) connection must be joined to the pressure monitor. This must be
                                      split by means of a T connector.
                                      These measuring points allow the sensor module to measure the operating pressure
                                      levels and the flow in the pressurised enclosure correctly.
                                      Marked quick plug-in connectors are available on the sensor module and on the
                                      pressure monitor. These must be connected together by means of a measurement hose
                                      with an outside diameter of 4 mm, as shown in the above diagram.

                                                                                   Note

                                                     Only the 18-mm orifices may be used for the version with two pressure
                                                     monitors.




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4.2         Electrical Connections
4.2.1       Safety Instructions for the Electrical System

                                                                          DANGER
                                           Death or serious physical injury due to work on live parts.
                                           Risk of fatal injury from electrical current.
                                               Observe the 5 safety rules for work on electrical systems: disconnect
                                                mains; protect against unintended reconnection; verify the absence of
                                                voltage; earth and short-circuit; cover or safeguard nearby live parts.

4.2.2       Directions for Wiring the APEX 2003 Control Unit

                                                                          DANGER
                                           Death or serious physical injury when the cover on the APEX control
                                           unit is opened in an explosive atmosphere.
                                           Risk of explosion.
                                               Before opening the lid of the enclosure, check the atmosphere for any
                                                explosive gases.

                                                                      ATTENTION
                              Short-circuits due to loose or protruding wires in the APEX control unit.
                              The APEX control can be damaged.
                                  All core wires, including those not required, must be attached to a terminal.
                                  Lay the wires only in the space between the shield bus and the connecting
                                   terminal.
                                  Make sure none of the wires are loose or jut out/protrude.

                             The following describes the procedure for feeding and connecting cables to the APEX
                             control unit:
                             Procedure:
                                 Loosen the 4 fastening screws in the lid on the APEX control unit and take off the
                                  lid.
                                 Feed the supply, data and enable line through the cable glands into the Ex e
                                  junction box.
                                 Establish the electrical connections in accordance with the terminal assignment.
                                 Screw the terminals in securely with 0.4-0.6 Nm.
                                 Put the shields and earthing connections onto the shield bus.
                                 Use the appropriate closures to seal cable glands that are not in use.
                                 Tighten cable glands with 3.0 Nm.
                                 Put the lid onto the APEX control unit and tighten the 4 fastening screws with 1.4
                                  Nm.




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4.2.3       Electrical Connections to the APEX 2003 Control Unit
                                                                               ATTENTION
                                        Avoid damage to the sealing.
                                        Cancellation of the Ex protection strategy.
                                             Visually check the sealing when closing the APEX control unit (cleanliness, secure
                                              fitting and intactness).




                                      Terminal                  Connection                        Function
                                      1-12                      Sensor module                     Control
                                      13-14                     No function                       Depending on the variant
                                      15-16                     Temperature switch                Cooling
                                      17-18                     Bypass key switch                 Bypass operation
                                      19-20                     Ext. activation                   Activation Ex p outlet
                                      21-22                     No function                       Depending on the variant
                                      23-24                     Programming bridge                Safety module
                                      25-26                     Supply voltage                    Voltage supply
                                      28-29                     Outlet valve                      System-dependent
                                      31-32                     Purging gas valve                 Purging gas supply
                                      34-35                     Ex p                              Enabling
                                      27, 30, 33, 36, 37        PE connection                     Earthing
                                      38-46                     Floating contacts                 Alert messages
                                      47-48                     RS485 interface                   Only for service

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4.2.4    Sensor Module
                         The sensor module is integrated and connected in the control unit as standard in the APEX
                         2003.00, APEX 2003.002x and APEX 2003.MV control units. In the “APEX 2003.00I control
                         unit” variant, the sensor module must be connected by the user.
                         The sensor module for installation in the pressurised enclosure is fitted as standard with a
                         connection cable. The wires are numbered 1 to 12 and must be connected, one by one, to
                         terminals 1 to 12 in the APEX control unit on the control module.

                          Communication and voltage supply are produced with intrinsic safety.
                          Connection:
                            Terminal        Connection                             Function
                            1               Sensor module                          Display control
                            2               Sensor module                          Display control
                            3               Sensor module                          Display control
                            4               Sensor module                          “SET“ button
                            5               Sensor module                          “+” button
                            6               Sensor module                          “-“ button
                            7               Sensor module                          Supply voltage
                            8               Sensor module                          Mass
                            9               Sensor module                          “MIN B” pressure measurement
                            10              Sensor module                          Mass
                            11              Sensor module                          “DIFF A” pressure measurement
                            12              Sensor module                          “MIN A” pressure measurement




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4.2.5       Bypass Key switch
                                                                                 DANGER

                                                    Death or serious physical injury due to commissioning with bypass key
                                                    switch in an explosive atmosphere.
                                                    Risk of explosion
                                                       Have the commissioning with a bypass key switch approved by the
                                                        factory manager or his appointee. Approval may be given only if it has
                                                        been ensured that there will not be any explosive atmosphere for the
                                                        duration of the commissioning or if the necessary precautions have
                                                        been taken to protect against the risk of explosion (fire permit).
                                                       Warning sign informing that the Ex protection will be eliminated if the
                                                        key switch is activated. Affix near the key switch.



                                       Depending on the variant, the bypass key switch is integrated in the APEX 2003.00, APEX
                                       2003.002xS and APEX 2003.MVS control units or it can be mounted separately in the
                                       pressurised enclosure.

                                      The bypass key switch must be marked as shown in the following label and this must be
                                      attached in the immediate vicinity of the bypass key switch.




                                      The position of the bypass key switch is queried with intrinsic safety by the control
                                      module.
                                      Connection:
                                        Terminal       Connection                             Function
                                        5              Bypass key switch (N/O)                Activation bypass
                                        8              Bypass key switch (N/O)                Activation bypass
                                        17             Bypass key switch (N/O)                Activation bypass
                                        18             Bypass key switch (N/O)                Activation bypass




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4.2.6    Temperature switch
                                                                            Note

                                            This process is not a safety temperature monitoring procedure in the sense of
                                            the standard. If this is required, a safety thermostat that can only be manually
                                            reset must be used instead of the normal commercially available thermostat .


                              A standard commercially available thermostat can be connected to terminals 15 and 16 in
                              the control module.
                              Once the set temperature (N/O contact) is reached, the purging gas quantity is connected
                              for the duration of the increased temperature. Accordingly, the increased purging gas flow
                              cools the pressurised enclosure.
                              It is not necessary to program the control module. Terminals 15 and 16 are polled
                              automatically by the control module.

                              Connection:
                               Terminal        Connection                               Function
                               15              Temperature monitoring                   Cooling Ex p
                               16              Temperature monitoring                   Cooling Ex p
4.2.7       Separate ON/OFF Switch
                                                                            Note

                                            The 19/20 input must always be provided with a bridge if no switch is
                                            connected. Otherwise the purging will proceed but the application in the
                                            pressurised enclosure will not be enabled


                              A separately certified switch for manually switching the Ex p enabling on and off can be
                              connected at terminals 19 and 20 instead of the existing bridge.
                              After activation, the APEX control unit purges the pressurised enclosure and generates the
                              required positive pressure. The internal assembly (control) is not switched on until the
                              separate ON/OFF switch is activated.

                              Connection:
                               Terminal        Connection                               Function
                               19              ON/OFF switch                            Ext. main switch
                               20              ON/OFF switch                            Ext. main switch




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4.2.8       Thermal Overload Disconnection
                                                                                    Note

                                                     This process is not a safety temperature monitoring procedure in the sense of
                                                     the standard. If this is required, a safety thermostat that can only be manually
                                                     reset must be used instead of the normal commercially available thermostat .


                                       With thermostats connected, the terminals 19 and 20 can be used for disconnection
                                       purposes in the event of a thermal overload in the pressurised enclosure.
                                       When the set temperature is exceeded, the thermostat contact opens. The opening action
                                       cancels and accordingly deactivates the command enabling the pressurised enclosure.
                                       The thermostats are queried with intrinsic safety.

                                      Connection:
                                        Terminal        Connection                              Function
                                        19              ON/OFF switch                           Thermal overload disconnection
                                        20              ON/OFF switch                           Thermal overload disconnection
4.2.9           Programming Bridge
                                                                                    Note

                                                     It is not possible to program the control module.
                                                     The programming bridge is necessary when altering system pressure level
                                                     programming and setting because changes without a programming bridge
                                                     will not be accepted.
                                                        Put on the programming bridge to make changes to the programming
                                                         and remove it when the programming is finished.


                                       Adjustments to the control module and sensor module will have the effect of altering the
                                       overall function. When changes are to be made and saved, the programming bridge
                                       included in the scope of supply must be placed at terminals 23 and 24 before the
                                       adjustments are made.
                                       To ensure that the programming bridge will not be forgotten after the conclusion of the
                                       work on the APEX control unit, it is designed to prevent the lid of the APEX control unit
                                       closing

                                      Connection:
                                        Terminal        Connection                              Function
                                        23              Programming bridge                      Enabling programming
                                        24              Programming bridge                      Enabling programming




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4.2.10   Supply Voltage
                                                                    ATTENTION

                            Damage to property due to an incorrect voltage supply.
                            The control module’s internal fusing is destroyed.
                                   Before activating the supply voltage, compare the supply voltage level with the level
                                    printed on the APEX control unit.


                           The supply voltage specified on the control module must be connected to terminals 25, 26
                           and 27.




                           Connection:
                           Terminal           Connection                             Function
                           25                 L                                      Phase
                           26                 N                                      Neutral conductor
                           27                 PE                                     Earthing
4.2.11      Purging Gas Valve
                                                                       WARNING

                                            Death or risk of injury when the purging gas valve is operated with an
                                            APEX control unit that has inadequate fusing.
                                            The control module can be destroyed. The explosion protection is no longer
                                            assured.
                                                Operate the G1/4″ digital purging gas valve and proportional purging
                                                 gas valve only with a 7-W control unit.
                                                Operate the G3/8″ proportional purging gas valve only with a 15-W
                                                 control unit.
                                                Check the compatibility of the purging gas valve and the control
                                                 module.


                           The purging gas valve in the “digital” or “proportional” version is connected to terminals 31,
                           32 and 33.



                           Connection:
                           Terminal           Connection                             Function
                           31                 L+                                     Phase
                           32                 N-                                     Neutral conductor
                           33                 PE                                     Earthing



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4.2.12      Enabling the Pressurised Enclosure
                                                                             ATTENTION

                                        Damage to property due to overcurrent at the control module.
                                        The control module’s internal fusing is destroyed.
                                             The Ex p enabling (relay K2/3; terminals 34 and 35) may be operated only in
                                              conjunction with a mains fuse.
                                              (max. 5 A, 1.500 A switching capacity, quick-acting).


                                       The application inside the pressurised enclosure is enabled by means of the APEX control
                                       unit. There must not be any voltage in the pressurised enclosure when the APEX control is
                                       deactivated.
                                       The maximum which the Ex p enabling can switch is a single-phase circuit with neutral
                                       conductor and a maximum load of 5 A. If the current load inside the pressurised enclosure
                                       is polyphase or more than 5 A, a separately certified Ex d contactor, activated by the
                                       APEX control unit, will be required.

                                      Connection:
                                      Terminal         Connection                            Function
                                      34               L                                     Enabling
                                      35               N                                     Enabling
                                      36               PE                                    Enabling
4.2.13          Floating contacts

                                       Floating contacts are available for processing signals at the APEX control unit. Their
                                       functions are freely programmable.

                                      Connection:
                                      Terminal         Connection                            Function
                                      38               Floating contact                      N/C contact
                                      39               Floating contact                      N/C, base contact
                                      40               Floating contact                      N/O contact
                                      41               Floating contact                      N/O contact
                                      42               Floating contact                      N/O contact
                                      43               Floating contact                      N/O contact
                                      44               Floating contact                      N/O contact
                                      45               Floating contact                      N/O contact
                                      46               Floating contact                      N/O contact




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4.2.14   RS485 Interface
                                                                    DANGER
                                         Death or serious physical injury due to the use of the RS485 interface
                                         in an explosive atmosphere.
                                         Risk of explosion
                                             Only authorised and qualified personnel may use the RS485
                                              interface.


                           The R-S 485 interface is intended only for servicing and setting work in the factory. The
                           RS485 interface may not be used while the pressurised operating equipment is in use.

4.3         Purging Gas Supply
                           A purging gas supply providing the required flow quantity must be connected to the
                           pressurised enclosure. The following internal diameters of the purging gas supply line
                           can serve as reference values:
                            Capacity                                        Internal diameter
                            Pressurised enclosure
                            < 50 litres                                     Purging gas supply line
                                                                            min. 8 mm
                            50 to 300 litres                                min. 10 mm
                            300 to 700 litres                               min. 15 mm
                            700 to 1,000 litres                             min. 20 mm
                            from 1,000 litres on                            min. 25 mm




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5                Operation
5.1             Setting of Parameters
                                                                                   Note

                                                    Alteration of parameters and settings.
                                                    Parameter changes are only accepted when the programming bridge is
                                                    connected to terminals 23 and 24.
                                                    To ensure that the altered levels are processed correctly by the APEX
                                                    control unit, it is recommendable to restart the APEX control unit by means
                                                    of a reset (S5).
                                      The parameters are set on the control module and the connected sensor module. For this
                                      purpose there are five rotary switches on the control module and 3 buttons on the sensor
                                      module.
                                      The following sections explain the individual functions of the rotary switches and buttons.




                                        Rotary switch        Function

                                        S1                   Changing display

                                        S2                   10-minute purge time

                                        S3                   1-minute purge time

                                        S4                   10-second purge time

                                        S5                   ON/OFF switch




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5.2         Operation of the Sensor Module
                        The three (+), (-) and (SET) buttons are used for altering and saving the switching values
                        selected with the S1 rotary switch.
                        Pressing the “+” or “-“ button once changes the level by 0.1 mbar. The altered value is
                        saved by means of the “SET” button and marked by an “*”.
                        Setting the S1 rotary switch to position 8 or 9 programs the functions of relays K 4 and K 5.

                         Button           Function

                         +                Increase the value

                         -                Reduce the value

                         SET              Save the altered value

5.3         Display on the Sensor Module
                        The sensor module display shows the values selected by means of the “S1” rotary switch.
                        Three lines are shown in the display, whereby each line indicates a certain value.

                         Line             Function

                         1                Display of the current actual value

                         2                Display of the purge time

                         3                Display of the current setpoint value

5.4         Changing of Values
                        The parameters can be adjusted inside the APEX control unit as follows. This example
                        explains how to change the DP1 internal pressure:
                        Procedure:
                              Turn S1 “Display” to item 0.
                              Connect a programming bridge between terminals 23 and 24.
                              Press the + or - buttons to alter the DP 1 level.
                              Press the “SET” button to save the new level.
                               o The change is confirmed by an “*” in the display.

                              Switch the APEX control unit off and on again by means of the S5 rotary switch.
                              Remove the programming bridge between terminals 23 and 24.
                                                                      Note

                                       Procedure to change the parameters.
                                       Use the same procedure to change the switching values and functions of
                                       DIFF A (item 1) to K 5 (item 9).




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5.5             S1 Rotary Switch for “Display”
                                                                               ATTENTION

                                          Disconnection of the positive pressure regulation due to an incorrect setting of
                                          the maximum pressure level inside the enclosure during the purge time.
                                          The ability of the APEX control unit to function is no longer assured.
                                             The MAX 1 switching level (pressure inside the enclosure during the purge time)
                                              should not be set higher than the MAX switching level (maximum pressure during
                                              operation).

                                      The S1 rotary switch is used to display the different switching levels in the sensor module.
                                      S1 switch setting at position:
                                      Position Display                 Function
                                      0             DP 1               Setpoint level of operating pressure / remaining purge time
                                      1             DIFF A             Minimum differential pressure A (purge time)
                                      2             DIFF B             Minimum differential pressure B (purge time)
                                      3             MIN A              Minimum positive pressure A (switching-off level)
                                      4             MIN B              Minimum positive pressure B (switching-off level)
                                      5             MAX                Maximum positive pressure (switching-off level operation)
                                      6             MAX 1              Maximum positive pressure (switching-off level purge time)
                                      7             MIN P              Pre-alarm
                                      8             K4                 Freely programmable signal relay
                                      9             K5                 Freely programmable signal relay

5.6             Rotary Switches S2 to S4 “Purge time”
                                      The purge time is set with rotary switches S 2 to S 4.
                                      If a purge time of 13 minutes and 40 Seconds is set, rotary switches S2 to S4 must be set
                                      as follows:
                                      Procedure:
                                               Turn the “Display” S1 rotary switch to position 0.
                                               Place a programming bridge between terminals 23 and 24.
                                               Turn rotary switch S2 to position 1.
                                               Turn rotary switch S3 to position 3.
                                               Turn rotary switch S4 to position 4.
                                               Turn the APEX control unit on and off by means of rotary switch S5.
                                               Remove the programming bridge between terminals 23 and 24.
                                      Switch             Function
                                      S2                 Minutes in tens
                                      S3                 Minutes in units
                                      S4                 Seconds in tens




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5.7         S5 “ON/OFF” Rotary Switch
                        The S5 rotary switch is a reset switch and it is used for re-starting the system when
                        adjustments have been made.

                        Position          Function
                        0                 Off / reset
                        1                 On

5.8         K4 and K5 Relays
                        Various functions can be assigned to the K4 and K5 potential-free relays. The following
                        table shows the possible functions for the K4 and K5 relays:

                        Value             Function
                        0                 Switches simultaneously with K 2/3 relays (Ex p enabling)
                        1                 Switches if the “DIFF A” level is exceeded.
                        2                 Switches if the enclosure pressure is greater than “MIN P”.
                        3                 Switches if the enclosure pressure is greater than “MIN A”.
                        4                 Switches if the enclosure pressure is greater than “MAX”.
                        5                 Switches if the enclosure pressure is greater than “MAX 1”.
                        6                 Switches if the purge time is counting.
                        7                 Switches simultaneously with K1
                        8                 Switches if the bypass mode is activated
                        9                 Switches if there is any internal malfunctioning.




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6                Commissioning

                                                                              ATTENTION

                                             - Before switching on for the first time, make sure the operating voltage agrees
                                               with the mains voltage.
                                             - An error code will indicate any internal faults that may occur while the APEX
                                               control unit is starting up.
                                             If the error code is due to a fault in the purging gas supply, the fault should be
                                              eliminated and the APEX control unit reset by switching it on and off..



                                                                                     Note

                                                     Place a programming bridge when changing parameters
                                                     During commissioning and when adjusting parameters in the control
                                                     module, the programming bridge must be set between terminals 23 and 24.


                                      Procedure for commissioning a pressurised system:


                                            Before commissioning, check the electrical devices installed inside the pressurised
                                             enclosure.
                                            Make sure the pressurised enclosure is purged sufficiently.
                                            Check that the pressurised system functions correctly:
                                             o It must be ensured that there is no external voltage in the pressurised enclosure
                                                (including data lines) when the control is deactivated.
                                            The relevant safety regulations and rules must be observed.
                                            Determine the differential pressure (see Chapter 6.1).
                                            Set the positive operating pressure (see Chapter 6.2).
                                            Calculate and set the purge time (see Chapter 6.3).
                                            Check the purging phase (see Chapter 6.5).
                                            Check the operating phase (see Chapter 6.6).




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6.1         Calculation of the Differential Pressure
                         To determine the flow using DIFF A and DIFF B, close the pressurised enclosure and start
                         up the APEX control unit.
                         Procedure:
                             Set the S5 rotary switch to position “1”.
                             Set the S1 rotary switch to position “1”.
                             Use the plus key on the sensor module to increase the DIFF A setpoint and confirm
                              with the “Set” button.
                                     e.g. 15 mbar
                             Set the S1 rotary switch to position “2”.
                             Use the plus key on the sensor module to increase the “DIFF B” setpoint and
                              confirm with the “Set” button.
                                     e.g. 15 mbar
                             Use the S5 rotary switch to reset the control module (Position 0 – 1).
                             Connect the purging gas and set the input pressure at the pressure reducer.
                                     e.g. 2 bar
                             Set the S1 rotary switch to position “1”.
                              o The APEX control unit starts the purging phase.

                             Register and note the maximum DIFF A level.
                                     e.g. registered value = 6.5 mbar
                             Use the plus or minus keys on the sensor module to set the DIFF A setpoint level
                              to 6.0 mbar and confirm with the SET key.
                                     e.g. detected value 6.5 mbar – 0.5 mbar = 6.0 mbar
                             Set the S1 rotary switch to position “2”.
                             Use the plus or minus keys on the sensor module to set the DIFF B setpoint level
                              to 6.0 mbar and confirm with the SET key.
                                     e.g. detected value 6.5 mbar – 0.5 mbar = 6.0 mbar
                             Set the S5 rotary switch to position “0”.
                             Set the trial purge time by means of the rotary switches S2 to S4.
                                     e.g. 30 seconds (S5 = 0; S2 = 0; S3 = 0; S4 = 3)
                             Set the S5 rotary switch to position “1”.
                              o The APEX control unit starts and the purge time begins to count down.

                                                                      Note

                                       Deduction of a safety factor from DIFF A and DIFF B.
                                       On account of the possibility of fluctuations occurring in the flow during the
                                       purging operation, a safety factor of 0.5 mbar can be deducted from the
                                       DIFF A and DIFF B levels.




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6.2             Setting the Positive Operating Pressure
                                      The “DP1” level is the internal positive pressure in the pressurised enclosure. This level is
                                      monitored by the APEX control unit and compensated if necessary. As standard, the
                                      operating pressure is set to 1.5 mbar in the digital purging gas valve and to 2.5 mbar in the
                                      proportional purging gas valve.
                                            APEX control unit with digital purging gas valve
                                               Any losses through leakage in the pressurised enclosure are compensated in the
                                               digital purging gas valve by means of an adjustable leakage air needle, which must
                                               be adjusted to suit the leakage losses.
                                               If the compensation by the leakage air nozzle is not sufficient and the pressure
                                               inside the enclosure falls below the “DP 1” level, the digital purging gas valve is
                                               connected for a short time to prevent switching-off due to a loss of pressure.

                                                                                    Note

                                                     Connection of the digital purging gas valve during the operating
                                                     phase.
                                                     Increased leakage losses.
                                                         Re-adjustment of the leakage air needle, see Chapter 6.3 “Adjusting
                                                          the Leakage Air Needle”.
                                            APEX control unit with proportional purging gas valve
                                               Setting of the operating pressure. The proportional valve regulates the pressure
                                               inside the enclosure to the “DP 1” setpoint level. This is done by the control module
                                               controlling the proportional purging gas valve in a way that ensures that only the
                                               actual leakage losses are compensated. There is no leakage air needle such as
                                               there is in the digital purging gas valve.
                                      Procedure for setting the positive operating pressure:
                                            Set the S5 rotary switch to position “1”.
                                            Set the S1 rotary switch to position “0”.
                                            Use the “+” and “-“ buttons to adjust the level.
                                            Use the “SET” button to confirm the level.
                                            Use the S5 rotary switch to reset the control module (position 0 – 1).
                                            Setting of the required input pressure on the pressure reducer.
                                                    e.g. 2 bar
                                            Do not change the leakage air needle in the purging gas valve.
                                            Close the pressurised enclosure.
                                            Connect the mains voltage and set the S5 rotary switch to position “1”.
                                             o After the purging phase, the operating phase is initiated and the pressure falls
                                                to the positive operating pressure level.
                                             o The positive operating pressure level is indicated in the sensor module display.
                                                This should be kept at a constant level.
                                                    If there is a drop in the positive operating pressure, increase the flow at the
                                                    leakage air needle.
                                                    If there is an increase in the positive operating pressure, reduce the flow at
                                                    the leakage air needle.

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6.3         Adjusting the Leakage Air Needle
                        The leakage air needle for the digital purging gas valve must be adjusted during
                        commissioning and when altering the leakage air quantity in the pressurised enclosure.
                        Procedure:
                                       Set the S5 rotary switch to position “1”.
                                       Set the S1 rotary switch to position “0”.
                                       Set the required input pressure on the pressure reducer.
                                              e.g. 2 bar
                                       Let the purge time for the APEX control unit run.
                                       Do not alter the leakage air needle on the purging gas valve.
                                       Determine the “DP1” level.
                                               If there is a drop in the “DP1”, increase the flow at the leakage air needle.
                                               If there is an increase in the “DP1”, reduce the flow at the leakage air needle
                        Increase the flow at the leakage air needle:
                                       Use a small (2-mm) screwdriver to turn the screw in the leakage air needle in ¼
                                        revolutions in an anti-clockwise direction.
                                       Check the “DP1” level again to determine if the level remains constant, increases
                                        or continues to fall.
                                        o If the “DP1” level remains constant, the leakage air needle has been adjusted
                                            correctly.
                        Reduce the flow at the leakage air needle:
                                       Use a small (2-mm) screwdriver to turn the screw in the leakage air needle in ¼
                                        revolutions in an anti-clockwise direction.
                                       Check the “DP1” level again to determine if the level remains constant or drops or
                                        continues to increase.
                                        o If the “DP1” level remains constant, the leakage air needle has been adjusted
                                           correctly.


                                                                                          Leakage air needle



                         Diagram of the flow rate at the leakage air needle:
                         Revolution




                                                                                                                Rate of flow[l/min]



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6.4             Calculation of Purge Time
                                      It is assumed in the following that the volume of purging gas is calculated to suit the
                                      capacity of the pressurised enclosure (capacity-dependent purge time).
                                      The flow of purging gas at the outlet of the pressurised enclosure is used to calculate the
                                      purge time. The “DIFF A” and “DIFF B” purging gas flow must be calculated as described
                                      in Chapter 6.1 “Calculation of the Differential Pressure”.


                                      Procedure:
                                               The orifice is determined by the 10th code number in the type designation: APEX
                                               control unit type: 07-3711-x21 x /….

                                        Orifice                  Diameter [mm]

                                        1                        2

                                        2                        5

                                        3                        8

                                        4                        12

                                        5                        15

                                        6                        18


                                             Using the differential pressure determined in accordance with Chapter 6.1
                                              “Calculation of the Differential Pressure”, read the purging gas flow from the
                                              diagram. Diagrams are available in the appendix.
                                             The purge time is calculated in accordance with the following formula:




                                             Set the calculated purge time by means of the S2 to S4 rotary switches.


                                                                                     Note

                                                      Deduction of a safety factor from DIFF A and DIFF B.
                                                      On account of the possibility of fluctuations occurring in the flow during the
                                                      purging operation, a safety factor of 0.5 mbar can be deducted from the
                                                      DIFF A and DIFF B levels.




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6.4.1    Example of a Purging Gas Calculation
                            The following is an example of how the purge time is calculated.
                            Example:
                                   Capacity of the pressurised enclosure = 200 litres,
                                   Control unit type 07-3711-1215/1000
                            Procedure:
                                   The orifice is determined by the 10th code number in the type designation: APEX
                                   control unit type: 07-3711-121 5 /1000

                                       Orifice                  Diameter [mm]

                                       5                        15

                                   o       Based on the table, the diameter of the orifice is 15 mm.

                                   The following level was calculated in accordance with Chapter 6.1 “Calculation of
                                   the Differential ”:
                                   o       Differential pressure = 6.5 mbar
                                   o       DIFF A and DIFF B minus 0.5 mbar (safety factor)




                                   oFlow read from the diagram = 11.5 m³ / h
                                Calculate the purge time in accordance with the formula:
                                 o Purge time = 200 l x 10 : 11500 l/h x 60 = 10 minutes 30 seconds

                                Set the calculated purge time by means of the S2 to S4 rotary switches.
                                              Setting for S2=1; S3=0; S4=3
                                Switch the APEX control unit off and on again by means of the S5 rotary switch.




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6.5             Checking the Purging Phase
                                                                                 Note

                                                    Safe operation during fluctuations in pressure.
                                                    For safe operation (pressure fluctuations), raise the pressure reducer’s
                                                    setpoint inlet pressure by 0.5 bar.

                                      Check the purge time for the pressurised enclosure as follows:
                                            Set up the pressurised enclosure to be ready for operation.
                                            Activate the APEX control unit.
                                            Activate the purging gas supply.
                                             o The “MIN A” and “MIN B” LEDs go out.
                                             o The “DIFF A” and “DIFF B” LEDs light up.
                                             o The “purge time” LED flashes.
                                             o The time shown in the sensor module’s display counts down.

                                            Reduce the purging gas supply by lowering the pressure at the pressure reducer.
                                             o The “MIN A” and “MIN B” LEDs light up.
                                             o The “DIFF A” and “DIFF B” LEDs go out.
                                             o The “purge time” LED is off.
                                             o The time shown in the sensor module’s display is reset.

                                            Increase the purging gas supply by raising the pressure at the pressure reducer
                                             (max. 3 bar).
                                             o The “MIN A” and “MIN B” LEDs go out.
                                             o The “DIFF A” and “DIFF B” LEDs light up.
                                             o The “purge time” LED flashes.
                                             o The time shown in the sensor module’s display counts down.
                                             o At the end of the purge time the “OPERATE” LED lights up.


6.6             Checking the Operating Phase
                                      Check the operating phase of the pressurised enclosure as follows:
                                            Set up the pressurised enclosure to be ready for operation.
                                            Activate the APEX control unit.
                                            Activate the purging gas supply.
                                            Let the purging phase run.
                                             o The “MIN A” and “MIN B” LEDs are off.
                                             o The “OPERATE” LED is on.
                                             o Relay K2/3 activates the installed parts.

                                            Reduce the purging gas supply by lowering the pressure at the pressure reducer.
                                             o The “MIN A” and “MIN B” LEDs light up.
                                             o The “OPERATE” LED goes off.
                                             o Relay K2/3 deactivates the installed parts.




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Operation                     APEX 2003 Control Unit
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7               Operation
7.1         Safety During Operation
                                                                      DANGER

                                          Death or serious physical injury due to a damaged explosion
                                          protection measure. It is no longer possible to operate the control unit
                                          without risks.
                                          Risk of explosion
                                              Put the APEX control unit out of operation and protect it against
                                               unintended reconnection.

7.2         Types of Purging Gas
                                                                      DANGER

                                          Death or serious physical injury due to purging gas escaping when
                                          the pressurised enclosure is opened.
                                          Risk of suffocation
                                              Stop the supply of purging gas when opening the pressurised
                                               enclosure and make sure the escaping purging gas cannot be
                                               inhaled directly.

                            Only inert gas (e.g. nitrogen) or cleaned and dry instrument air may be used as a purging
                            gas. In any case, a filter must be placed upstream if the quality with respect to foreign
                            particles is not assured. The following quality features should be filled by the purging gas:
                                Residual dust: < 40 µm
                                Residual water: dew point +3 °C
                                Residual oil content: 1 mg/m³




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7.3             Operating Phases in the Pressurised Enclosure
                                      The operation of a piece of pressurised operating equipment can be divided into three
                                      phases. The three phases break down into the preparatory, purging and operating phase.
      7.3.1      Flow Diagram for the Operating Phases
                                      The APEX control unit is constructed in conformance to the currently applicable directives
                                      and standards and fulfils the requirements specified there. The processes in the
                                      respective states are listed in the following.
                                       Operating phase                       Requirements                           Effect
                                                               Mains voltage connected
                                      Preparatory phase        Internal pressure less than MAX                 Initiation of the
                                                               Purge time not ended                            purging phase
                                                               Internal pressure greater than MIN A / MIN B
                                                               Internal pressure less than MAX
                                                               MIN. differential pressure > DIFF A / DIFF B    Purge time on
                                      Purging phase
                                                                                                                Initiation of the
                                                                                                                operating
                                                               Purge time ended                                phase
                                                               Internal pressure greater than MIN A / MIN B
                                                               Internal pressure less than MAX                 Pressurised
                                      Operating phase
                                                               Purge time ended                                enclosure is
                                                               Bridge 19/20 closed                             enabled
      7.3.2      Preparatory Phase
                                      The preparatory phase begins when the supply voltage for the APEX control unit is
                                      switched on and the purging gas supply starts. The purging gas flows through the purging
                                      gas valve into the pressurised enclosure.

                                                                                  Note

                                                    Difference between the proportional and digital purging gas valve
                                                    Digital purging gas valve: the digital purging gas valve directs the purging
                                                    gas through the integrated leakage air needle into the pressurised
                                                    enclosure. Accordingly, the purging gas valve is closed during the
                                                    preparatory phase and it opens for the start of the purging phase.
                                                    Proportional purging gas valve: the proportional purging gas valve directs
                                                    purging gas into the pressurised enclosure only when it is open. It is
                                                    therefore necessary for the proportional purging gas valve to be open
                                                    during the preparatory phase and the bypass operation.
                                      Preparatory phase sequence:
                                            The influx of purging gas increases the internal pressure in the pressurised
                                             enclosure.
                                            The “MIN A” minimum pressure in the enclosure is exceeded.
                                            The purging gas valve is opened by means of the control module.
                                            The next phase, the “purging phase“, is initiated.



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   7.3.3        Purging Phase
                                The pressurised enclosure is purged with purging gas in order to remove any explosive
                                gas-and-air mixture inside or to dilute it to a harmless concentration before the possible
                                sources of ignition are connected in the pressurised enclosure.
                                This process prepares the pressurised enclosure for the operating phase. The necessary
                                purging volume depends on the free capacity in the pressurised enclosure. The purging
                                process is constantly monitored by the sensors in the sensor module and the pressure
                                monitor.
                                To prevent the pressure inside the enclosure reaching an excessively high level as a
                                result of an impermissibly high flow resistance at the control device’s pressure monitor, the
                                purging gas pressure is restricted during the purge time to the “MAX 1” level. This means
                                when the “MAX 1” level is exceeded, the purging gas valve is closed for the short time.
                                Purging phase sequence:
                                      Increase the flow with purging gas.
                                      The plate integrated in the pressure monitor is raised.
                                      The “MIN A”, “MIN B”, “DIFF A” and “DIFF B” switching levels are exceeded.
                                      The “DIFF A” and “DIFF B” LEDs light up.
                                      The purge time in the display counts down and the “purge time” LED flashes.
                                      The purging gas valve closes after the end of the purge time.
                                      The “DIFF A”, “DIFF B” and “Purge time” LEDs go out and the next phase, the
                                       “Operating phase”, is initiated.
   7.3.4        Operating Phase
                                The operating phase begins when the purging gas valve closes.
                                The operating pressure must be maintained during the entire operation of the pressurised
                                enclosure to prevent the penetration of combustible substances. The electrical installed
                                parts in the pressurised enclosure are connected and activated by means of a relay
                                integrated in the control module.
                                If the enclosure pressure drops below the set minimum levels during the operating phase,
                                all electrical installed parts in the pressurised enclosure which are not themselves
                                explosion-proof, are switched off and the purging process starts again.
                                Operating phase sequence:
                                      The purge valve closes and the leakage losses are compensated.
                                      The “Operate” LED lights up.
                                      Relay K2/3 connects and activates the mains voltage.
                                      K4 and K5 relays switch depending on their configuration.
                                      The remaining purge time display goes out and the existing pressure inside the
                                       enclosure is displayed on the sensor module.




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7.4             Bypass Operation
                                                                                DANGER

                                                    Death or serious physical injury due to commissioning with a bypass
                                                    key switch in an explosive atmosphere.
                                                    Risk of explosion
                                                        Have the commissioning with a bypass key switch approved by the
                                                         factory manager or his appointee. Approval may be given only if it
                                                         has been ensured that there will not be any explosive atmosphere for
                                                         the duration of the commissioning or if the necessary precautions
                                                         have been taken to protect against the risk of explosion (fire permit).
                                                        A warning sign informing that the Ex protection will be eliminated if
                                                         the key switch is activated must be affixed near the key switch.

                                                                                  Note

                                                    Special technical condition for the proportional purging gas valve in
                                                    bypass mode.
                                                    When a proportional purging gas valve is used, it is open during the bypass
                                                    mode!

                                      During the operating phase it may be necessary to change settings on internally mounted
                                      components. The APEX control unit provides the bypass function for this function.
                                      If the bypass mode is activated, it must be ensured that there is no explosive gas in the
                                      atmosphere. The concentration of gas in the surrounding atmosphere is determined with a
                                      gas detector.
                                      Once the bypass mode is activated, the door of the pressurised enclosure can be opened
                                      without interrupting the operation of the internal components. The required settings can be
                                      carried out and, once done, the pressurised enclosure must be closed again. The
                                      operation of the pressurised enclosure is not interrupted for this duration. The purging
                                      phase is not repeated for the pressurised enclosure.
                                      Procedure:
                                            Measure the surrounding atmosphere freely.
                                            Activate the bypass mode.
                                             o The display changes to “BYPASS”.

                                            Open the door of the pressurised enclosure
                                             o The enabling by relay K2/3 is not reset.

                                            Do the required work inside the pressurised enclosure.
                                            Close the door on the pressurised enclosure.
                                            Deactivate the bypass mode.
                                             o The display changes to the standard display.




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8               Maintenance and Care

                                                                    Note

                                       Maintenance intervals
                                       Regular maintenance is not necessary if the device is operated
                                       appropriately in compliance with the installation instructions and with due
                                       consideration to the ambient conditions:
                                           An inspection in conformance to the “Inspection Table for
                                            Commissioning and Maintenance” in Chapter 8.1 is recommended
                                            once a year.


                                                               ATTENTION

                           Maintenance and Care
                              - The currently applicable provisions in the national regulations must be observed
                                for the upkeep, maintenance and inspection of the operating equipment!
                              - Operating and maintenance work may be done by trained specialist personnel
                                only. The statutory regulations and other binding directives on workplace safety,
                                accident prevention and environmental protection must be adhered to.
                              - Live parts can become exposed when covers are opened or parts removed,
                                except where this is possible by hand. Connection parts may be live too.


                          The “Inspection Table for Commissioning and Maintenance” in Chapter 8.1 serves as a
                          minimum requirement for the maintenance or commissioning of a pressurised enclosure.




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8.1             Inspection Table for Commissioning and Maintenance
                                                                                                                     Mainten-
                                                                                                    Commissioning
                                      Item         Test point                                                         ance
                                                                                                         OK            OK
                                      1            Visual inspection for damage
                                      2            Attachment of the APEX control unit                              n/a
                                      3            Diagonal purging of enclosure assured                            n/a
                                      4            Installed devices attached securely
                                      5            Installed equipment purged sufficiently.                         n/a
                                                   Devices with integrated capacitors noted (it
                                      6                                                                             n/a
                                                   may be necessary to affix a sign).
                                      7            Devices with hot surfaces noted
                                      8            Establishment of equipotential bonding
                                                   Wiring checked to ensure presence of blue
                                      9                                                                             n/a
                                                   cores or cables in the Ex i area
                                                   Wiring checked for conformance to the relevant
                                      10                                                                            n/a
                                                   directives.
                                                   Any inspection glasses there are made of
                                      11                                                                            n/a
                                                   safety glass or of plastic
                                                   “Key switch…” sign affixed wherever there are
                                      12
                                                   any key switches.
                                                   General state of the mounted elements in the
                                      13           pressurised enclosure (device feet, rain
                                                   shelter, cable glands)
                                                   Agreement between mains voltage and the
                                      14                                                                            n/a
                                                   connection voltage for the individual devices
                                                   Total power consumption of the devices less
                                      15           than the control unit’s maximum switching                        n/a
                                                   capacity
                                      16           Check separation of any data lines.                              n/a
                                      17           Maximum surface temperature checked                              n/a
                                                   Pressure test with 1.5 x Pmax passed, no
                                      18                                                                            n/a
                                                   permanent deformations in the enclosure
                                      19           Enclosure capacity determined                                    n/a
                                      20           Purging phase checked
                                                   Switching levels of the APEX control unit
                                      21
                                                   checked.
                                                   Correct functioning of the APEX control unit
                                      22
                                                   tested.
                                                   Correct functioning of any bypass key switch
                                      23
                                                   checked.
                                                   Sign conforming to EN 60079-2 affixed to
                                      24
                                                   enclosure.




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Malfunctioning and          APEX 2003 Control Unit
Troubleshooting             Type 07-3711-.2../....


9               Malfunctioning and Troubleshooting
                          It is assumed here that the connection of all external electrical and mechanical units has
                          been carried out in an orderly fashion. For that reason it should be checked that the
                          electrical units have indeed been set up and connected properly.

9.1         Fault Table
                           Fault                        Possible Cause                      Remedy
                           Device is not working,       No mains voltage.                   Check mains voltage
                           “Mains” LED does not                                             supply line.
                           light up
                                                        Device defective.                   Return to manufacturer
                           The electric devices are     Key switch turned on                Turn off the key switch
                           connected and activated
                           without purging phase.
                           The digital purging gas      Excessive quantity of purging       Reduce the purging gas
                           valve switches off briefly   gas introduced into the             nozzle
                           during the purging phase     pressurised enclosure
                           The “Purge time on” LED There is no purging gas                  Connect purging gas.
                           does not flash during the
                           purge time                Purging gas valve does not             Check purging gas valve
                                                     open or opens only partially           for supply voltage
                                                                                            (terminals 31 to 33)
                                                                                            Check purging gas valve
                                                                                            for foreign particles in the
                                                                                            mechanical part
                                                        Insufficient purging gas flow       Increase input pressure to
                                                        through the Ex p enclosure.         setpoint level
                                                                                            Check purging gas nozzle
                                                                                            for correct level
                                                                                            Check the control unit’s
                                                                                            “DIFF A”, “DIFF B”, “MIN
                                                                                            A” and “MIN B” for
                                                                                            setpoint levels.
                                                                                            Increase the cross-section
                                                                                            in the purging gas supply
                                                                                            line
                                                        The target pressure for the         Purging gas supply too
                                                        pressure reducer is not             low. Increase the cross-
                                                        reached.                            section of the supply line.
                                                        The pressure monitor for the        Remove the blockage or
                                                        control unit is inadmissibly        take suitable measures to
                                                        blocked or restricted.              eliminate the restriction.
                                                        Enclosure leaks during the          Use suitable measures to
                                                        purging phase due to an             seal the enclosure.
                                                        increase in internal pressure.




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APEX 2003 Control Unit                                                                                   Malfunctioning and
Type 07-3711-.2../....                                                                                     Troubleshooting

                                        Fault                       Possible Cause                    Remedy
                                        The digital purging gas     Temperature sensor is             Check purging gas valve
                                        valve does not switch       connected, internal temperature   for foreign particles in the
                                        over to the small nozzle    is too high.                      mechanical part.
                                        after the purging phase.
                                                                                                      Wait until the increased
                                                                                                      flow rate reduces the
                                                                                                      internal temperature or
                                                                                                      check the set temperature
                                                                                                      switching value.
                                                                    The ON/OFF switch or the         Turn on the ON/OFF
                                                                    bridge at terminals 19 and 20 is switch and connect the
                                                                    not connected.                   bridge to terminals 19 and
                                                                                                     20.
                                                                    The purging gas valve does not Check the purging gas
                                                                    close.                           valve to see if the supply
                                                                                                     voltage is switched off.
                                        The control unit does not   The pressure in the enclosure Reduce the air flow in the
                                        connect the electric        is higher than the “MAX”         air leakage nozzle.
                                        devices after the purging   switching level.
                                        phase.
                                                                    “MAX” switching level too low.    Check the “MAX”
                                                                                                      switching level.
                                                                    Pressurised enclosure leaks.      Seal the pressurised
                                                                    Turn on the “MIN A” and “MIN      enclosure.
                                                                    B” pressure switches.
                                        The control unit switches   The leakage air needle in the     Increase the air flow rate
                                        the electric devices off    digital valve is too low.         in the leakage air needle.
                                        after the purge time with a The “MIN A” or “MIN B”            Check the “MIN A” or
                                        5-second time delay.        switching level is too high.      “MIN B” switching level.
                                                                    Configuration of K 4 or K 5       Check the configuration of
                                                                                                      the K4 or K5.
                                        Relays K4 or K5 do not      The enclosure leaks. The          Seal the enclosure or
                                        connect.                    purging gas valve tries to        enlarge the passage in the
                                                                    maintain the internal pressure    air leakage nozzle.
                                                                    by opening the purging air
                                                                    nozzle.
                                        The digital purging gas     The “DP1” level is too high.      Reduce the “DP1” level.
                                        valve connects briefly
                                        during the operating
                                        phase.
                                        The electrical devices do   Key switch turned on.             Turn off the key switch.
                                        not switch off when the
                                        pressure drops.




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Malfunctioning and        APEX 2003 Control Unit
Troubleshooting           Type 07-3711-.2../....



9.2         Error Code Table
                                                                     Note

                                      Maintenance intervals’
                                         - An error code will indicate any internal faults that may occur while
                                           the APEX control unit is starting up.
                                      If the error code is due to a fault in the purging gas supply, the fault should
                                      be eliminated and the APEX control unit reset by switching it on and off.


                         Error code            Error Description                               Remedy

                                                                               Use the S5 rotary switch to reset the
                                      Memory:
                                                                               APEX control unit. If this measure is
                               (1)    The cause of the error lies in the
                                                                               not successful, send the control unit
                                      memory area.
                                                                               back to the manufacturer.
                                      Difference between Min A and Min
                                      B: the difference measured between       Check the measuring leads. They
                               (2)
                                      the Min A and Min B pressure levels      could be bent or dirty (e.g. with oil).
                                      is too large
                                      MUX/AD:                                  Use the S5 rotary switch to reset the
                                      The cause of the error lies in the       APEX control unit. If this measure is
                               (3)
                                      area of the Multiplexer control or the   not successful, send the control unit
                                      analog/digital conversion.               back to the manufacturer.
                                      SITRANS:
                                      The cause of the error lies in the
                               (4)                                             Check the connections.
                                      area of the opt. pressure switch
                                      connections.
                                                                               Use the S5 rotary switch to reset the
                                      EEPROM:
                                                                               APEX control unit. If this measure is
                               (5)    The cause of the error lies in the
                                                                               not successful, send the control unit
                                      area of the internal EEPROM.
                                                                               back to the manufacturer.
                                                                               Use the S5 rotary switch to reset the
                                      RAM:
                                                                               APEX control unit. If this measure is
                               (6)    The cause of the error lies in the
                                                                               not successful, send the control unit
                                      area of the internal RAM modules.
                                                                               back to the manufacturer.
                                      MAX 1 less than MIN:
                                      The cause of the error lies in the
                                      setting of the minimum and
                               (7)                                             Check the setpoint values.
                                      maximum levels whereby the
                                      maximum level was set lower than
                                      the minimum level.
                                      P > max in purge time:
                                      The internal pressure in the Ex p        Reduce the supplied purging gas
                               (8)
                                      operating equipment exceeds the          pressure.
                                      maximum setpoint level.




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Type 07-3711-.2../....


10               Technical Data
10.1            Aid for the Selection of the APEX Control Unit
                                      The following table serves as an aid for the selection of the right control unit to suit the
                                      capacity of the pressurised enclosure.
                                                                              Pressure -       Purging gas          Orifice
                                            Capacity        Pressure
                                                                               reducer           nozzle            diameter
                                         < 50 litres           2 bar              1/4″            2.8 mm             12 mm
                                         50 to
                                                               2 bar              1/4″            3.9 mm             15 mm
                                         300 litres
                                         300 to
                                                               2 bar              1/2″            4.5 mm             18 mm
                                         700 litres
                                         700 to 1.000                                                              18 mm or
                                                               3 bar              1/2″            4.5 mm
                                         litres                                                                    2 x 18 mm
                                         From 1,000
                                                               3 bar              1/2″            5.5 mm           2 x 18 mm
                                         litres on

                                      Example:
                                      Parameters:
                                      Capacity of the pressurised enclosure: 250 litres
                                      Supply voltage: AC 230 V


                                      Selection of a control unit with a digital purging gas valve:
                                            APEX 2003 control unit with a 15-mm orifice (7 W)
                                               Type: 07-3711-1215/1000
                                            Digital purging gas valve with a 3.9-mm purging gas nozzle
                                               Type: 05-0056-0003
                                            Pressure reducer size 1/4″
                                               Type: 05-0056-0007


                                      Selection of a control unit with a proportional purging gas valve:
                                            APEX 2003 control unit with a 15-mm orifice (15 W)
                                               Type: 07-3711-1215/1082
                                            Proportional purging gas valve with a 3.9-mm purging gas nozzle
                                               Type: 05-0056-0022
                                            Pressure reducer size 1/4″
                                               Type: 05-0056-0007




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Technical Data               APEX 2003 Control Unit
                             Type 07-3711-.2../....



10.2        General Technical Data for the APEX Control Unit
                           Parameters                      Specifications
                           Ex protection type (ATEX)           II 2(1)G Ex e d ib [ia Ga px] IIC T4 / T6
                           Certification                   DMT 99 ATEX E 082
                           Mains voltage                   AC 230 V or AC 115V (depending on the variant)
                                                           7-watt (digital purging gas valve)
                           Rated capacity
                                                           15-watt (proportional purging gas valve)
                           Overvoltage category            III
                           Degree of protection            IP 65
                           Connecting terminals            MAX. 2.5 mm², fine-wired
                           Ambient temperature operation   -20 °C to +40 °C
                           Ambient temperature storage
                                                           -20 °C to +60 °C
                           and transport
                                                           Ex e protective enclosure with a viewing window in
                           Construction
                                                           the lid
                           Enclosure material              glass-reinforced polyester
                           Purging gas medium              cleaned industrial compressed air or inert gas
                           Pressure switching levels
                           MIN A / MIN B / MIN P           0 to 25 mbar
                           DP 1 / DIFF A / DIFF B          0 to 25 mbar
                           MAX / MAX 1                     0 to 25 mbar
                           Purge time                      0 to 99 minutes
                           Relay contacts
                                                           Switching capacity maximum 5 A at cos φ= 1/AC 250
                           Relay K2/3                      V; dropout delay 5 seconds; additional fuse required;
                                                           non-floating (=supply voltage)
                                                           Switching capacity maximum 5 A at cos φ= 1/AC 250
                           K4 and K5 relays
                                                           V; no dropout delay; floating
                           Purging gas valve               Digital or proportional (depending on the variant)

10.3        Supplementary Technical Data
10.3.1      APEX 2003.00I Control Unit
                           Parameters                      Specifications
                           Type                            07-3711-1200/….
                           Dimensions                      200 [B] x 250 [H] x 120 [D] mm
                           Dimensions borehole pattern     180 [B] x 200 [H] mm
                           Installation                    internal
                           Sensor module                   external
                           Pressure monitor                external
                           Bypass key switch               external
                                                           3 x M20x1.5 blue / 8 x M20x1.5 black /
                           Cable glands
                                                           1 x M16x1.5 black
                                                           0 to 44 m³/h
                           Rate of flow                    depending on orifice diameter for the pressure
                                                           monitor




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10.3.2      APEX 2003.00 Control Unit
                                      Parameters                    Specifications
                                      Type                          07-3711-121./….
                                      Dimensions                    200 [B] x 250 [H] x 120 [D] mm
                                      Dimensions borehole pattern   180 [B] x 200 [H] mm
                                      Installation                  flanged-on
                                      Sensor module                 internal
                                      Pressure monitor              1 x pressure monitor
                                      Bypass key switch             internal, in APEX 2003.00S
                                      Cable glands                  2 x M20x1.5 blue / 4 x M20x1.5 black
                                                                    0 to 22 m³/h
                                      Rate of flow                  depending on the diameter of the orifice on the
                                                                    pressure monitor
10.3.3          APEX 2003.002x Control Unit
                                      Parameters                    Specifications
                                      Type                          07-3711-1216/….
                                      Dimensions                    255 [B] x 250 [H] x 120 [D] mm
                                      Dimensions borehole pattern   236 [B] x 200 [H] mm
                                      Installation                  flanged-on
                                      Sensor module                 internal
                                      Pressure monitor              2 x pressure monitors
                                      Bypass key switch             internal, in APEX 2003.002xS
                                      Cable glands                  2 x M20x1.5 blue / 4 x M20x1.5 black
                                                                    0 to 44 m³/h
                                      Rate of flow                  depending on the diameter of the orifice on the
                                                                    pressure monitor
10.3.4          APEX 2003.MV control Unit
                                      Parameters                    Specifications
                                      Type                          07-3711-211./….
                                      Dimensions                    255 [B] x 250 [H] x 120 [D] mm
                                      Dimensions borehole pattern   236 [B] x 200 [H] mm
                                      Installation                  remote
                                      Sensor module                 internal
                                      Pressure monitor              Pressure monitor; internal
                                      Purging gas valve             Proportional, NW 2
                                      Pressure reducer              G 1/4″; 0-6 bar
                                      Purging gas connections       G 1/4″; internal thread
                                      Bypass key switch             internal, in APEX 2003.MVS
                                      Cable glands                  2 x M20x1.5 blue / 4 x M20x1.5 black
                                                                    0 to 4 m³/h
                                      Rate of flow                  depending on the diameter of the orifice on the
                                                                    pressure monitor




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                              Type 07-3711-.2../....



10.4        Sensor Module
                            Parameters                          Specifications
                            Type                                17-51P2-..00
                            Ex protection type (ATEX)               II 2G Ex ib IIC T4 / T6
                            Ex protection type (IECEx)          Ex ib IIC T4 / T6
                            ATEX certification                  DMT 99 ATEX E 108 X
                            IECEx certification                 IECEx BVS 09.0055X
                            Ambient temperature                 -20 °C to +60 °C
                            Dimensions
                                                  internal      70 [L] x 70 [B] x 60 [H] mm
                                                  external      95 [L] x 95 ]B] x 85 [H] mm
                            Installation                        internal or external (depending on the variant)
                            Weight
                                                  internal      0.2 kg
                                                  external      0.5 kg
                            Degree of protection                MIN. IP 20 after mounting
                            For further technical data, see product data sheet.

10.5        Technical Data for the Purging Gas Valve
10.5.1      Digital Purging Gas Valve
                            Parameters                          Specifications
                            Type                                05-0056-00..
                            Ex protection type (ATEX)               II 2G Ex m II T4
                            Ex protection type (IECEx)          Ex m II T4
                            ATEX certification                  PTB 00 ATEX 2129X
                            IECEx certification                 IECEx PTB 07.0021X
                            Supply voltage                      AC 230V or AC 115V ± 10%
                            Pressure range                      0 to 16 bar
                            Valve connection                    G 3/8″ or G 1/2″
                            Nominal diameter                    13 mm
                            Ambient temperature                 -10 °C to + 40 °C
                            Dimensions
                                                  G 3/8“        56 [L] x 40 [B] x 100 [D] mm
                                                  G 1/2“        65 [L] x 40 [B] x 100 [D] mm
                            Weight                              1.2 kg
                            Degree of protection                IP 65
                            For further technical data, see product data sheet.




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    10.5.2       Proportional Purging Gas Valve
                                      Parameters                           Specifications
                                      Type                                 05-0056-00..
                                      Ex protection type                      II 2G EEx m II T4
                                      Certification
                                                            G1/4“          PTB 00 ATEX 2094X
                                                            G3/8“          PTB 00 ATEX 2202X
                                      Supply voltage                       AC 230V or AC 115V ± 10%
                                      Pressure range                       0 to 4 bar
                                      Valve connection                     G1/4″ or G 3/8″
                                      Nominal diameter                     13 mm
                                                            G1/4“          2 mm
                                                            G3/8“          6 mm
                                      Ambient temperature                  -10 °C to +60 °C
                                      Dimensions
                                                            G1/4“
                                                            G3/8“
                                      Weight                               1.2 kg
                                      Degree of protection                 IP 65
                                      For further technical data, see product data sheet.

10.6            Rain Protection Cap
                                      Parameters                          Specifications
                                      Type                                 05-0032-0011
                                      Material                             PVC, black
                                      Dimensions                           Ø 54 mm x 40 mm
                                      Mounting thread                      M36
                                      Temperature range                    -20 °C to +60 °C
                                      Weight                               0.048 kg
                                                                           Protection against rain for the APEX control unit
                                      Application
                                                                           with an orifice of up to 15 mm

10.7            Rain Protection Roof
                                      Parameters                          Specifications
                                      Type                                 05-0132-00..
                                      Material                             Sheet steel, varnished or stainless steel
                                      Dimensions
                                                      for APEX 2003.00     142 [D] x 220 [B] x 50 [H] mm
                                                   for APEX 2003.002x      142 [D] x 270 [B] x 50 [H] mm
                                      Mounting thread                      2 x M6
                                      Temperature range                    -20 °C to +60 °C
                                      Weight                               0.5 kg
                                      Application                          Protection against the rain for the APEX control unit




Technical data subject to change without notice.
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Technical Data            APEX 2003 Control Unit
                          Type 07-3711-.2../....



10.8        Technical Requirement for the Purging Gas
                        The quality of the purging gas must conform to class 543 in compliance with DIN ISO
                        8573-1:

                        Parameters                       Specifications
                        Residual dust                    < 40 µm
                        Residual water                   Dew point +3 °C
                        Residual oil content             1 mg/m³
                        Temperature                      Maximum +40 °C




                                                                      Technical data subject to change without notice.
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APEX 2003 Control Unit                                                                                       Order Numbers
Type 07-3711-.2../....


11               Order Numbers
11.1            APEX Control Units
    11.1.1       APEX 2003.00I Control Units
                                        APEX control unit for internal installation
                                        7-W version, AC 230 V                                          07-3711-1200/1010
                                        7-W version, AC 115 V                                          07-3711-1200/2010
                                        15-W version, AC 230 V                                         07-3711-1200/1099
                                        15-W version, AC 115 V                                         07-3711-1200/2099

    11.1.2       APEX 2003.00 Control Units
                                        APEX 2003.00 control units, standard (1 x pressure monitor )
                                        7-W version, AC 230 V, 8-mm orifice                            07-3711-1213/1000
                                        7-W version, AC 115 V, 8-mm orifice                            07-3711-1213/2000
                                        7-W version, AC 230 V, 12-mm orifice                           07-3711-1214/1000
                                        7-W version, AC 115 V, 12-mm orifice                           07-3711-1214/2000
                                        7-W version, AC 230 V, 15-mm orifice                           07-3711-1215/1000
                                        7-W version, AC 115 V, 15-mm orifice                           07-3711-1215/2000
                                        7-W version, AC 230 V, 18-mm orifice                           07-3711-1216/1000
                                        7-W version, AC 115 V, 18-mm orifice                           07-3711-1216/2000
                                        15-W version, AC 230 V, 12-mm orifice                          07-3711-1214/1082
                                        15-W version, AC 115 V, 12-mm orifice                          07-3711-1214/2082
                                        15-W version, AC 230 V, 15-mm orifice                          07-3711-1215/1082
                                        15-W version, AC 115 V, 15-mm orifice                          07-3711-1215/2082
                                        15-W version, AC 230 V, 18-mm orifice                          07-3711-1216/1082
                                        15-W version, AC 115 V, 18-mm orifice                          07-3711-1216/2082

    11.1.3       APEX 2003.00S Control Units
                                        APEX 2003.00S control units, standard with a bypass key switch (1 x pressure monitor )
                                        7-W version, AC 230 V, 12-mm orifice                           07-3711-1214/1037
                                        7-W version, AC 115 V, 12-mm orifice                           07-3711-1214/2037
                                        7-W version, AC 230 V, 15-mm orifice                           07-3711-1215/1037
                                        7-W version, AC 115 V, 15-mm orifice                           07-3711-1215/2037
                                        7-W version, AC 230 V, 18-mm orifice                           07-3711-1216/1037
                                        7-W version, AC 115 V, 18-mm orifice                           07-3711-1216/2037
                                        15-W version, AC 230 V, 12-mm orifice                          07-3711-1214/1109
                                        15-W version, AC 115 V, 12-mm orifice                          07-3711-1214/2109
                                        15-W version, AC 230 V, 15-mm orifice                          07-3711-1215/1109
                                        15-W version, AC 115 V, 15-mm orifice                          07-3711-1215/2109
                                        15-W version, AC 230 V, 18-mm orifice                          07-3711-1216/1109
                                        15-W version, AC 115 V, 18-mm orifice                          07-3711-1216/2109

    11.1.4       APEX 2003.002x Control Units
                                        APEX 2003.002x control units, standard (2 x pressure monitor )
                                        7-W version, AC 230 V, 2x18-mm orifice                         07-3711-1216/1017
                                        7-W version, AC 115 V, 2x18-mm orifice                         07-3711-1216/2017
                                        15-W version, AC 230 V, 2x18-mm orifice                        07-3711-1216/1107
                                        15-W version, AC 115 V, 2x18-mm orifice,                       07-3711-1216/2107

Technical data subject to change without notice.
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Order Numbers                      APEX 2003 Control Unit
                                   Type 07-3711-.2../....




   11.1.5       APEX 2003.002xS Control Units
                                   APEX 2003.002xS control units, standard with a bypass key switch (2 pressure monitor )
                                   7-W version, AC 230 V, 2x18-mm orifice                       07-3711-1216/1025
                                   7-W version, AC 115 V, 2x18-mm orifice                       07-3711-1216/2025
                                   15-W version, AC 230 V, 2x18-mm orifice                      07-3711-1216/1105
                                   15-W version, AC 115 V, 2x18-mm orifice                      07-3711-1216/2105

   11.1.6       APEX 2003.MV Control Units
                                   APEX 2003.MV control units, remote control unit
                                   AC 230 V, 3-mm orifice                                              07-3711-2211/1000
                                   AC 115 V, 3-mm orifice                                              07-3711-2211/2000
                                   AC 230 V, 5-mm orifice                                              07-3711-2212/1000
                                   AC 115 V, 5-mm orifice                                              07-3711-2212/2000
                                   AC 230 V, 8-mm orifice                                              07-3711-2213/1000
                                   AC 115 V, 8-mm orifice                                              07-3711-2213/2000

   11.1.7       APEX 2003.MVS Control Units
                                   APEX 2003.MVS control units, remote control unit with a bypass key switch
                                   AC 230 V, 3-mm orifice                                        07-3711-2211/1012
                                   AC 115 V, 3-mm orifice                                        07-3711-2211/2012
                                   AC 230 V, 5-mm orifice                                        07-3711-2212/1012
                                   AC 115 V, 5-mm orifice                                        07-3711-2212/2012
                                   AC 230 V, 8-mm orifice                                        07-3711-2213/1012
                                   AC 115 V, 8-mm orifice                                        07-3711-2213/2012

11.2        Accessories and Spare Parts
   11.2.1       Pressure Monitor
                                   Pressure Monitor for use with an APEX 2003.00I Control Unit
                                   Pressure monitor module in the Ex e enclosure, 12-mm orifice        17-51P3-1402
                                   Pressure monitor module in the Ex e enclosure, 15-mm orifice        17-51P3-1502
                                   Pressure monitor module in the Ex e enclosure, 18-mm orifice        17-51P3-1602
                                   Pressure monitor module in the Ex p enclosure, 12-mm orifice        17-51P3-1403
                                   Pressure monitor module in the Ex p enclosure, 15-mm orifice        17-51P3-1503
                                   Pressure monitor module in the Ex p enclosure, 18-mm orifice        17-51P3-1603

   11.2.2       Sensor Module
                                   Sensor module for use with an APEX 2003.00I Control Unit
                                   0-25 mbar, fitted device                                            17-51P2-1100
                                   0-25 mbar, mounted device with a stainless steel frame              17-51P2-2100




                                                                                      Technical data subject to change without notice.
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Type 07-3711-.2../....




11.2.3      Digital Purging Gas Valve
                                        Digital purging gas valve with a leakage air needle
                                        G3/8″, purging gas nozzle d=2.0 mm, AC 230 V, N/C         05-0056-0001
                                        G3/8″, purging gas nozzle d=2.8 mm, AC 230 V, N/C         05-0056-0002
                                        G3/8″, purging gas nozzle d=3.9 mm, AC 230 V, N/C         05-0056-0003
                                        G3/8″, purging gas nozzle d=5.5 mm, AC 230 V, N/C         05-0056-0004
                                        G3/8″, purging gas nozzle d=7.7 mm, AC 230 V, N/C         05-0056-0005
                                        G3/8″, purging gas nozzle d=10.7 mm, AC 230 V, N/C        05-0056-0006
                                        G3/8″, purging gas nozzle d=2.0 mm, AC 115 V, N/C         05-0056-0016
                                        G3/8″, purging gas nozzle d=2.8 mm, AC 115 V, N/C         05-0056-0017
                                        G3/8″, purging gas nozzle d=3.9 mm, AC 115 V, N/C         05-0056-0018
                                        G3/8″, purging gas nozzle d=5.5 mm, AC 115 V, N/C         00-0056-0019
                                        G3/8″, purging gas nozzle d=7.7 mm, AC 115 V, N/C         05-0056-0040
                                        G3/8″, purging gas nozzle d=10.7 mm, AC 115 V, N/C        05-0056-0020
                                        G1/2″, purging gas nozzle d=2.0 mm, AC 230 V, N/C         05-0056-0056
                                        G1/2″, purging gas nozzle d=2.8 mm, AC 230 V, N/C         05-0056-0057
                                        G1/2″, purging gas nozzle d=3.9 mm, AC 230 V, N/C         05-0056-0058
                                        G1/2″, purging gas nozzle d=5.5 mm, AC 230 V, N/C         05-0056-0059
                                        G1/2″, purging gas nozzle d=7.7 mm, AC 230 V, N/C         05-0056-0060
                                        G1/2″, purging gas nozzle d=10.7 mm, AC 230 V, N/C        05-0056-0061
                                        G1/2″, purging gas nozzle d=2.0 mm, AC 115 V, N/C         05-0056-0050
                                        G1/2″, purging gas nozzle d=2.8 mm, AC 115 V, N/C         05-0056-0051
                                        G1/2″, purging gas nozzle d=3.9 mm, AC 115 V, N/C         05-0056-0052
                                        G1/2″, purging gas nozzle d=5.5 mm, AC 115 V, N/C         05-0056-0053
                                        G1/2″, purging gas nozzle d=7.7 mm, AC 115 V, N/C         05-0056-0054
                                        Note: control module in 7-W version

11.2.4          Proportional Purging Gas Valve
                                        Proportional purging gas valve
                                        UC 230 V, nozzle 3.9, G1/4″                               05-0056-0047
                                        UC 115 V, nozzle 3.9, G1/4″                               05-0056-0048
                                        Note: control module in 7-W version.
                                        UC 230 V, nozzle 3.9, G3/8″                               05-0056-0022
                                        UC 115 V, nozzle 3.9, G3/8″                               05-0056-0024
                                        Note: control module in 15-W version.

11.2.5          Pressure Reducer
                                        Pressure reducer, 0.5-6 bar with an attachment of parts
                                        Pressure reducer 1/4″                                     05-0056-0007
                                        Pressure reducer 1/2″                                     05-0056-0041

11.2.6          Purging Gas Connection Set
                                        Purging gas connection set
                                        Purging gas connection set, DN D=9, R1/4″                 05-0056-0011
                                        Purging gas connection set, DN D=13, R1/2″                05-0056-0012




Technical data subject to change without notice.
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                                                                                                            Page 71 of 90
Order Numbers                APEX 2003 Control Unit
                             Type 07-3711-.2../....




11.2.7   Accessories
                             Accessories for the APEX Control Unit
                             Programming bridge                                                                    05-0012-0193
                             Rain protection cap                                                                   05-0032-0011
                             Rain protection roof, sheet steel, RAL 7035, width = 270 mm                           05-0132-0017
                             Rain protection roof, sheet steel, RAL 7035, width = 220 mm                           05-0132-0014
                             Rain protection roof, stainless steel 1.4301, width = 270 mm                          05-0132-0016
                             Rain protection roof, stainless steel 1.4301, width = 220 mm                          05-0132-0015

11.2.8      Control Module
                             Spare parts for the APEX control unit
                             Ex p control, control module, AC 230 V, 7 W                                           07-7331-8112/1100
                             Ex p control, control module, AC 115 V, 7 W                                           07-7331-8122/1100
                             Ex p control, control module, AC 230 V, 15 W                                          07-7331-8112/3100
                             Ex p control, control module, AC 115 V, 15 W                                          07-7331-8122/3100
                             Note: only available as a spare part, quoting type and serial number of the APEX control unit.




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Type 07-3711-.2../....


12               Appendix
12.1            Purging Gas Diagrams for the APEX Control Unit
    12.1.1       Purging gas diagram for the APEX 2003.00 control unit




    12.1.2       Purging Gas Diagram for the APEX 2003.002x Control Unit




Technical data subject to change without notice.
Version: Revision 0/March 2011
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Appendix                        APEX 2003 Control Unit
                                Type 07-3711-.2../....




   12.1.3       Purging Gas Diagram for the APEX 2003.MV Control Unit




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Type 07-3711-.2../....



12.2            Dimensions
    12.2.1       APEX 2003.00I




    12.2.2       APEX 2003.00




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Appendix                        APEX 2003 Control Unit
                                Type 07-3711-.2../....




   12.2.3       APEX 2003.00S




   12.2.4       APEX 2003.002x / APEX 2003.002xS




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Type 07-3711-.2../....




    12.2.5       APEX 2003.MV / APEX 2003.MVS




12.3            Borehole Patterns
    12.3.1       APEX 2003.00 Control Unit




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Appendix                         APEX 2003 Control Unit
                                 Type 07-3711-.2../....

   12.3.2       APEX 2003.00 Control Unit2x




   12.3.3       Sensor Module




   12.3.4       Roof as Protection Against Rain




                                Borehole dimensions
                                Material                                            “A” dimension
                                05-0132-0014, 05-0132-0015                          170 mm
                                05-0132-0016, 05-0132-0017                          220 mm




                                                             Technical data subject to change without notice.
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APEX 2003 Control Unit                                                                                         Appendix
Type 07-3711-.2../....



12.4            Test and Assessment Report Form
                      Product designation          :
                      Customer                     :
                      Type                         :
                      Order number                 :


                      Manufacturing no.            :
                      Input voltage                :
                      Valve type                   :       Digital valve           Prop. valve DN2    Prop. valve DN6
                      Measuring orifice            :
                     Settings
                                     S1 rotary                                                                  Switching
                      Value                                                Description                Code
                                      switch                                                                      level
                                                         Positive operating pressure level between
                     DP 1                 0                                                            D
                                                                 enclosure and atmosphere
                                                          Minimum differential pressure during the
                     DIFF A               1                                                            Q
                                                           purging phase in the pressure monitor
                                                          Minimum differential pressure during the
                     DIFF B               2                                                            R
                                                       purging phase in the pressure monitor module
                                                       Minimum positive pressure between enclosure
                     MIN A                3                                                            A
                                                         and atmosphere (disconnection threshold)
                                                       Minimum positive pressure between enclosure
                     MIN B                4                                                            P
                                                         and atmosphere (disconnection threshold)
                                                       The max. positive pressure between enclosure
                     MAX                  5                                                            B
                                                         and atmosphere (disconnection threshold)
                                                       The max. positive pressure between enclosure
                     MAX 1                6                                                            C
                                                              and atmosphere during purging
                     MIN P                7                                Pre-alarm                   F
                                     S1 rotary                                                                  Switching
                      Relay                                                Description                Code
                                      switch                                                                      level
                        K4               8                       Function of the K4 relay              N
                        K5                9                      Function of the K5 relay              O

                     Purge time

                     S2 rotary switch                                          10-minute steps
                     S3 rotary switch                                          1-minute steps
                     S4 rotary switch                                          10-second steps

                     Test for correct functioning

                     Sensor module                                            Functioning tested
                     Pressure monitor module                                  Functioning tested
                     APEX control module                                      Functioning tested


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Appendix                        APEX 2003 Control Unit
                                Type 07-3711-.2../....




                Extended parameters (may be changed only by the manufacturer)

                                            Display orientation in the sensor module
                Display                      1 = Sensor module after 2004
                                             2 = Sensor module to 2004

                                            Pressure range for the sensor module
                Version                      1 = 0-25 mbar
                                             2 = 0-300 mbar

                Valve type                   0 =    Digital valve
                                             1 =    Proportional valve

                P component                 Proportional component control valve

                I component                 Integral component control valve

                Zero point                  Valve’s response level


                Time delay                  K2/3 time delay as of the MIN a or MIN b signal


                                            Function of the terminals 19 and 20
                ON / OFF function            1 = Bridge / switch at terminals 19/20
                                             2 = Printer function

                                            Positive pressure disconnection
                MAX. function                1 = Error when “MAX” is exceeded
                                             2 = No error when “MAX” is exceeded

                Text marking

                                                                                              Date:

                                                                                        Tested by:

                                                                                       Checked by:




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APEX 2003 Control Unit                                                   Declaration of Conformity
Type 07-3711-.2../....                                                              and Approvals


13               Declaration of Conformity and Approvals
13.1            EC Declaration of Conformity for the APEX Control unit




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Declaration of Conformity   APEX 2003 Control Unit
and Approvals               Type 07-3711-.2../....



13.2        EC Declaration of Conformity for the Sensor Module




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Type 07-3711-.2../....                                                           and Approvals



13.3            EC Type Examination Certificate for the APEX Control Unit




Technical data subject to change without notice.
Version: Revision 0/March 2011
                                                                                   Page 83 of 90
Declaration of Conformity   APEX 2003 Control Unit
and Approvals               Type 07-3711-.2../....




                                                     Technical data subject to change without notice.
Page 84 of 90                                                        Version: Revision 0/March2011
APEX 2003 Control Unit                             Declaration of Conformity
Type 07-3711-.2../....                                        and Approvals




Technical data subject to change without notice.
Version: Revision 0/March 2011
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Declaration of Conformity   APEX 2003 Control Unit
and Approvals               Type 07-3711-.2../....




                                                     Technical data subject to change without notice.
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APEX 2003 Control Unit                                                  Declaration of Conformity
Type 07-3711-.2../....                                                             and Approvals



13.4            EC Type Examination Certificate for the Sensor Module




Technical data subject to change without notice.
Version: Revision 0/March 2011
                                                                                     Page 87 of 90
Declaration of Conformity   APEX 2003 Control Unit
and Approvals               Type 07-3711-.2../....




                                                     Technical data subject to change without notice.
Page 88 of 90                                                        Version: Revision 0/March2011
APEX 2003 Control Unit                                  NOTES
Type 07-3711-.2../....




Technical data subject to change without notice.
Version: Revision 0/March 2011
                                                   Page 89 of 90
NOTES           APEX 2003 Control Unit
                Type 07-3711-.2../....




                                         Technical data subject to change without notice.
Page 90 of 90                                            Version: Revision 0/March2011
                  BARTEC protects

                  people        and

                  the environment

                  by the safety

                  of components,

                  s y s t e m s

                  and     plants.




                                                                                       01-3711-7D0001-05/11-BARTEC WerbeAgentur-294497




BARTEC GmbH   Max-Eyth-Straße 16      Phone: +49 7931 597-0     info@bartec.de
Germany       97980 Bad Mergentheim   Fax:   +49 7931 597-119   www.bartec-group.com

				
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