INSTRUMENT HANDBOOK DeviceNet VP51 Digital Proportional Control Valve by ulf16328

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									                               INSTRUMENT HANDBOOK
                                      DeviceNet VP51
                            Digital Proportional Control Valve

                        To download the product EDS file visit www.odva.org




DeviceNet VP51 Manual Ver. 2, 29/02/04



                                                                              1
Table of Contents
1. Introduction

2. Safety

3. Operating Description

4. Dimensional Details

5. Installation
    •    Pneumatic
    •    Electrical
    •    DeviceNet

6. DeviceNet Interface Details

7. Local User Interface Details

8. EC Declaration of Conformity

9. ODVA Declaration of Conformity



1. INTRODUCTION
The DeviceNet VP51 Programmable Digital Proportional Control Valve for industrial pneumatic pressure control
applications. The DeviceNet VP51 can be configured to meet application requirements.
Fluid                      compressed air
Output Pressure Range      0-150 psig (or 0-10bar) – user definable. For applications where the user defined
                           span is less that 50% of maximum (<75psi, 5bar) please consult Norgren.
Supply Pressure            Up to 200psig/14bar max
Flow Capacity              1300 l/min/46SLFM
Control Signal             12 bit polled output from DeviceNet
Electrical Supply          Powered from DeviceNet (current consumption < 100mA)
Operating Temperature      -20° to 50° C (ambient)


Warranty
A two year warranty applies to all Norgren products. For terms and conditions ask for a copy of our
‘General Conditions of Sale.’



2. SAFETY
Compressed air in its basic state or in its more sophisticated applied forms can result in accidents if it is not
properly used. We therefore draw your attention to the following paragraphs*: The Health and Safety at Work
Act (1974) makes specific requirements on suppliers and users. To conform with these requirements IMI Norgren
Ltd. has, so far as it is reasonably practicable, designed, constructed and tested its products so as to be safe
when properly used. Many of our customers, being suppliers as well as users, are reminded of the imposed
duties of the above Act and when expediting these duties our technical staff will be pleased to advise. We cannot
accept responsibility for the design of plant which might use our equipment and would recommend the use of
European Norm (EN) standards and BS 4575:Part 3 (1988) , (Note compliance with these standards does not in
itself confer immunity from legal obligation). We also suggest the guidance booklet by the Health and Safety
Executive HS(G)39, “Compressed Air Safety” that offers advice on the safe use of compressed air.



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3. OPERATING DESCRIPTION
The DeviceNet VP51 is a programmable electronic proportional control valve.
The pneumatic section is a diaphragm actuated precision glandless spool valve, pilot pressure applied to the
pneumatic section controls the output pressure of the unit.
The pilot pressure is generated and controlled electronically. The feedback signal from the outlet port is
compared to the control signal required and ensures a consistent, stable output pressure.
The electronics system requires a nominal 24V DC supply signal (supplied from DeviceNet). With a 150 psi
standard unit, the user can define their requirements through DeviceNet parameters, and set the application
parameters needed for the unit, i.e. speed, proportional & integral gain, thresholds etc.




4. DIMENSION DETAILS
                                                                                 1=Inlet Port
                                                                                 2=Outlet Port
                                                                                 3=Exhaust Port




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5. INSTALLATION
Pneumatic Installation
•   Supply Pressure:                                15psig above maximum output required
                                                    (200psig max.)
•   Output Pressure Range:                          0-150psig
•   Media:                                          clean, dry 5µ filtered air
•   Porting:                                        G1/4; 1/4NPT; ISO2 Manifold Mount
•   Use oil-free air
•   Do not use PTFE tape

G1/4 & 1/4NPT variants
                             Exhaust port (3)           Supply port (1)

                                           3             1
    Electrical
    connector                                                               Return spring
                                                                            housing. Do not
                                                                            adjust.




                                                2
                                                    Output port (2)



•   Connect pipe-work using 10mm OD, 8mm ID, plastic pipe, cut cleanly at right angles, with push-fit pipe
    connections.
•   Fit an exhaust silencer to Port 3 if required (this will only slightly degrade exhaust performance)


ISO2 Manifold Mount variant
                                 Exhaust port (3)             Supply port (1)
                                                                                                                   Output port (2)           Exhaust port (3)
    Electrical
    connector                                                                     Return spring
                                                                                  housing. Do not
                                                                                  adjust.




                                                         Output port (2)                                ISO-2 sub base
                                                                                                        mounting holes    Supply port (1)
                                                                                                                                                 VP51 mounting holes
                                                                                                                                                 (M4 tapped) x 2
•   Use grub screws provided to plug cross drilled holes in interface plate
•   Mount interface plate to ISO-2 sub base with four M6 screws, with gasket between plate and sub base.
•   Place three O-rings in three counterbored holes in plate and mount VP51 with two M4 screws.


Electrical Installation
Connect the unit as follows using DeviceNet approved screened cable and a M12 female connector or with a
ready made M12 DeviceNet cable:

Pin 1:           Drain (bare)                                                                       1       4      Connector pinout
Pin 2:           V+ (red)                                                                                          looking onto the end of
Pin 3:           V- (black)                                                                             5          the instrument
Pin 4:           CAN_H (white)                                                                      2       3
Pin 5:           CAN_L (blue)




                                                                                                                                                     4
DeviceNet Installation
•   Download the DeviceNet VP51 EDS file from www.odva.org
•   Register the EDS file using a DeviceNet configuration tool (e.g. Rockwell RSNetworx).
•   The device MACID and baud rate are factory set to address 63 and Autobaud (see notes 1 & 2).
•   Connect the DeviceNet VP51 to a DeviceNet network.
•   Use the keypad or your DeviceNet configuration tool to change the MACID and baud rate parameters as
    required.
•   Map the polled i/o to a DeviceNet master device (e.g. PLC scanner).
•   Control the pressure by polling the polled input ‘Demand Pressure’ over the range 0-4095 (=0-105% of
    output pressure range).
•   Use a DeviceNet configuration tool (e.g. Rockwell RSNetworx) to change the DeviceNet VP51 parameters
    to suit the application (see note 3).

Notes:
    1)   MACID - The DeviceNet VP51 MACID is factory set to 63. Once the DeviceNet VP51 is powered, this
         can be changed either over the DeviceNet network or using the instrument’s keypad. If the DeviceNet
         VP51 detects that another device on the network already has its MACID, it will display a “Set Node
         Address” message instructing you to change the its MACID using the keypad. See section 7 of this
         manual for more details.
    2)   Baud rate - The DeviceNet VP51 is factory set with Autobaud detection. This means that it ‘listens’ to
         the network, detects the baud rate and selects its own baud rate accordingly. In order for this to work, it
         is necessary for the DeviceNet network to already have two or more other devices actively
         communicating on the network. After successful Autobaud detection, the baud rate parameter
         automatically switches to the selected baud rate. To run the Autobaud function again, the baud rate
         setting must be changed back to Autobaud via the keypad or DeviceNet. If Autobaud detection is
         unsuccessful or if the instrument has previously been set to an incorrect baud rate, it will automatically
         display a “Set Baud Rate” message instructing you to change the baud rate using the keypad. See
         section 7 of this manual for more details.
    3)   ADR facility - The DeviceNet VP51 supports ADR (Automatic Device Recovery). If the PLC has been
         configured to provide this feature and a DeviceNet VP51 is replaced with a new one, the PLC will
         automatically detect the new one and configure its address and parameters to be the same as the
         device it is replacing. Refer to the PLC and DeviceNet configuration tool instructions for more details.




                                                                                                                       5
6. DEVICENET INTERFACE DETAILS

I/O Data

Name                      I/O Type (see Note 1)    No. Bytes     Format
Demand Pressure           Polled Output                2         12 bit integer (0 to 4095)
                                                                 0 = minimum (zero) pressure
                                                                 4095 = full scale output + 5% span
                                                                 (see Note 2)
Actual Pressure          Polled Input                   2        12 bit integer (0 to 4095)
                                                                 0 = minimum (zero) pressure
                                                                 4095 = full scale output + 5% span
                                                                 (see Note 3)
Status Byte              Polled Input                   1        Bit 0: Set if difference between Demand
                                                                 Pressure and Actual Pressure exceeds Error
                                                                 Limit (see parameter 10).
                                                                 Bit 1: Set if Bit 0 has been set for longer
                                                                 than Error Delay (see parameter 11).
                                                                 Bit 2: Set if Actual Pressure ≥ Threshold A
                                                                 (see parameter 12).
                                                                 Bit 3: Set if Actual Pressure ≥ Threshold B
                                                                 (see parameter 13).
                                                                 Bits 4-7: Not used.
                                                                 (See Note 3)

Notes:
    1)   Inputs and Outputs are defined from the perspective of the DeviceNet network.
    2)   For 150 psi variant Demand Pressure value= 26 x (Required Pressure in psi), e.g. to output 100 psi, set
         Demand Pressure value to 2600.
         For 10 bar variant Demand Pressure value = 390 x (Required Pressure in bar), e.g. to output 6 bar, set
         Demand Pressure value to 2340.
         IMPORTANT - Only 12 of the 16 bits in the two Demand Pressure bytes are used. The four most
         significant bits are ignored. Setting the Demand Pressure value above 4095 or below 0 may lead
         to unpredicted output pressures.
    3)   If the polled input is read as a single value of 3 or more bytes, the two least significant bytes hold the
         actual pressure and the third least significant is the status byte. For example, a returned value of
         266044 (0x040F3C) represents an actual pressure of 0x0F3C = 3900 = 100% full scale and a status
         byte of 0x04 = bit 2 set.

DeviceNet Parameters
The following parameters are available via a DeviceNet configuration tool (e.g. RSNetworx) or via DeviceNet
explicit messaging, using the class, instance, attribute and byte length details in the table. To use a DeviceNet
configuration tool, it is necessary to register the DeviceNet VP51 EDS file on the configuration tool. The EDS file
can be downloaded from www.odva.org.

Parameter     Name           Format                            Default      Class    Instance     Attribute    Byte
   No.                                                         Value        Id       Id           Id           length
     1        Baud Rate      Selectable from:                  Autobaud     3        1            2            1
                             Autobaud, 125Kb/s, 250Kb/s,
                             500Kb/s (see note 1)
     2        Serial         Read only 4 byte integer          Factory      1        1            6            4
              number                                           set
     3        Demand         Read only integer, 0-4095         -            3        1            114          2
              Pressure       0 = minimum (zero) pressure                                          (0x72)
                             4095 = full scale output + 5%
                             span
                             (same as polled output, see
                             note 2)

                                                                                                                      6
Parameter     Name           Format                             Default      Class     Instance     Attribute    Byte
   No.                                                          Value        Id        Id           Id           length
    4         Actual         Read only integer, 0-4095          -            4         13           3            2
              Pressure       0 = minimum (zero) pressure                               (0x0D)
                             4095 = full scale output + 5%
                             span
                             (same as polled input)
    5         Status         Read only byte (same as            -            4         13(0x0D)     3            1
              Byte           polled input)
    6         Speed          Selectable integer, 0-7            0            3         1            104          1
                             0 = fastest, 7 = slowest                                               (0x68)
                             See fig. 1
    7         Prop Gain      Selectable integer 0-7             4            3         1            105          1
                             0 = low gain, 7 = high gain                                            (0x69)
                             (see note 3) See fig. 3
    8         Int Gain       Selectable integer 0-7             4            3         1            106          1
                             0 = low gain, 7 = high gain                                            (0x6A)
                             (see note 3) See fig. 3
    9         Dither         Selectable integer 0-7             4            3         1            107          1
              Amplitude      0 = no dither, 7 = maximum                                             (0x6B)
                             dither
   10         Error Limit    Selectable 0=105% (0-4095)         10%          3         1            109          1
                             0 = Error Limit Off                (390)                               (0x6D)
                             105% = Full scale output + 5%
   11         Error Delay    Integer 0-999                      200          3         1            110          2
                             Set in 100ths of a second          (2 secs)                            (0x6E)
   12         Threshold      Selectable 0-105% (0-4095)         50%          3         1            111          1
              A              0 = Status Bit 2 always set        (1950)                              (0x6F)
                             105% = Full scale output + 5%
   13         Threshold      Selectable 0-105% (0-4095)         100%         3         1            112          1
              B              0 = Status Bit 3 always set        (3900)                              (0x70)
                             105% = Full scale output + 5%
   14         Pressure       Selectable from:                   Depends      3         1            108          1
              Units          Bar, psi, kPA, Atm, kg/cm^2        on part                             (0x6C)
                             Sets units for pressure display    number
                             on LCD
   15         Signal         Selectable from Fail Safe, Fail    Fail Safe    3         1            113          1
              Failure        Freeze                                                                 (0x71)
              Mode           Sets operation of device on
                             loss of polled signal from
                             network (see note 2).

Notes:
    1)   If the baud rate parameter is set to Autobaud the Device will automatically listen to the network and
         work out the correct baud rate. The baud rate parameter will then automatically be set to the
         appropriate baud rate and will remain at its new setting even after removing power from the Device. In
         order to run the Autobaud function again, the baud rate must be changed back to Autobaud via
         DeviceNet or via the keypad.
    2)   Demand Pressure can only be set by means of a polled I/O message. It can be read but not set by
         explicit messaging. If no polled message is received, the output pressure is set according to parameter
         15 – Signal Failure Mode. If Fail Safe is selected, the output pressure will be zero when no polled
         messages are being received. If Fail Freeze is selected, the output pressure will remain at its last set
         value when no polled messages are being received.
    3)   To set the proportional gain, first set the integral gain to 0, then adjust the proportional gain to give the
         best possible response time without causing unacceptable overshoot or oscillations.
         Once proportional gain is set correctly, increase integral gain to achieve the best possible accuracy
         without causing unacceptable hunting (slow oscillations) on the output. See figs 2 & 3.




                                                                                                                     7
                                                         Fig. 1 - Speed Setting Effects
                                                   at default Proportional and Integral Gain
                          12




                          10

                                       0   1
                              8                4
        Pressure, bar




                              6




                              4

                                                             7
                              2




                              0

                                                                         Time




                                                        Fig. 2 - Proportional Gain Effects
                                                       at default Integral Gain and Speed
                                  12




                                  10




                                  8
                                                   7
                  Pressure, bar




                                                         4
                                  6




                                  4
                                                                         0
                                  2




                                  0

                                                                         Time




                                                          Fig. 3 - Integral Gain Effects
                                                    at default Proportional Gain and Speed
                 10.2




                                                                 4
                 10.1
Pressure, bar




                 10.0                                                7

                                                                                0
                        9.9




                        9.8

                                                                         Time




                                                                                               8
   7. LOCAL USER INTERFACE DETAILS
   The DeviceNet VP51 includes an integral keypad and LCD display. During normal operation, this will display the
   current output pressure of the instrument and its DeviceNet MACID (node address number). The keypad can be
   used to locally set the device MACID and baud rate. The complete menu structure is shown in fig. 4.




                                OK                   OK                   OK
Device goes      xxx . psi             Password            Set-up                           Set Baud
online                                                 C
                 Node xx                                   Comms                              Autobaud
correctly                              ****                                                        xxx
                                                           DN                                        OK
                                                                                                     /C
                                                                                            Set Node
                                                                                                       xx

                                                                                                     OK
                                                                                                     /C
                                                                                        C   Reset :
                                                                                            Cycle Pow..

                                                                    UP

                                                                          OK                    OK
                                       C                   Change               New                   Confirm
                                                           Password       C
                                                                                ****              C
                                                                                                      ****
                                                             DN                                           OK
                                                                     UP


                                       C                   Help
                                                           www.norgren.
                                                           com



Incorrect
baud rate or      Set Baud        OK   Password         OK                                  Set Baud
                  Rate                                                                             xxx
Autobaud
fails                                  ****
                                                                                                     OK


                  Set Node        OK   Password         OK                                  Set Node
Duplicate
                  Address                                                                              xx
node address
detected
                                       ****
                                                                                                     OK

                                                                                            Reset :
                                                                                            Cycle Pow..

Figure 4 – Local User Interface Menu Structure




                                                                                                                    9
Changing MACID or Baud Rate
From Normal Operating Mode
When the Device is in normal operating mode (i.e. communicating on DeviceNet), the baud rate or MACID can
be changed by following the steps detailed below:

•   Press OK from the default screen to enter the user interface.
•   Enter the password using the numbered arrow keys (see section on Password below).
•   Press OK to enter the Set-up Comms menu.
•   Use the up and down arrows to select the required baud rate and press OK to accept. Alternatively, press C
    to skip this stage or cancel changes to the baud rate.
•   Use the up and down arrows to select the required MACID (node address) and press OK to accept.
    Alternatively, press C to skip this stage or cancel changes to the MACID.
•   If either the baud rate or the MACID have been changed, a message will be displayed reading Reset: Cycle
    Power to Activate – Cancel to Abort. In order for the new settings to become active, the DeviceNet VP51
    must be reset. This should be done either by disconnecting and reconnecting the device, or cycling the
    network power. Alternatively, press C to return to the previous settings.

From Baud Rate Fault Condition
If the baud rate is incorrect or the Autobaud routine has not succeeded, the DeviceNet VP51 display will
automatically switch to display the message Set Baud Rate. Under these circumstances, following the steps
below:

•   Press OK to enter the user interface.
•   Enter the password using the numbered arrow keys (see section on Password below).
•   Use the up and down arrows to select the network baud rate and press OK to accept.
•   Use the up and down arrows to change the MACID (node address) if required, and press OK to accept.
•   The message will be displayed reading Reset: Cycle Power to Activate. In order for the new settings to
    become active, the DeviceNet VP51 must be reset. This should be done either by disconnecting and
    reconnecting the device, or cycling the network power.

From Node Address fault condition
If the DeviceNet VP51 detects that another device on the network already has its MACID (node address), it will
automatically switch to Set Node Address. Under these circumstances, following the steps below:

•   Press OK to enter the user interface.
•   Enter the password using the numbered arrow keys (see section on Password below).
•   Use the up and down arrows to change the MACID (node address) and press OK to accept.
•   The message will be displayed reading Reset: Cycle Power to Activate. In order for the new settings to
    become active, the DeviceNet VP51 must be reset. This should be done either by disconnecting and
    reconnecting the device, or cycling the network power.

User Interface Password
Entry into the local user interface is password controlled to prevent unauthorised access. All standard DeviceNet
VP51s are shipped with the password disabled. In this case, press OK from the password screen to enter the
user interface.

To change the Password, enter the user interface and use the up and down arrows to select the Change
Password menu. Press OK then enter and confirm the new password – the password can be any combination
of up to four digits in the range 1 to 4, entered using the numbered arrow keys.

In case the password is forgotten, there is an override facility – from the password screen, press and hold down
C then press and hold down OK, whilst keeping C held down. Hold down both until the user interface is entered
(approx. 5 secs).




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8. EC DECLARATION OF CONFORMITY
The DeviceNet VP51 Digital Proportional Valve complies with the EC Pressure Equipment Directive and the
generic EMC standards.




                                         BS EN 61000-6-4: 2001     Electromagnetic Compatibility
                                                                   Part 6-4 Generic Standard
                                                                   Emission standard for industrial environments




                                         BS EN 61000-6-2: 1999     Electromagnetic Compatibility
                                                                   Part 6-2 Generic Standards –
                                                                   Immunity for industrial environments




9. ODVA DECLARATION OF CONFORMITY




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