INTRINSICALLY SAFE POWER SUPPLY (Exi) control & display control

					                                                                                                                                                                              control &
           S    E     N   S           O                 R         S                                                                                                            display
                                                                                                                                                                          s e n s o r s




INTRINSICALLY SAFE                                                                                                                                            TX6641


POWER SUPPLY (Exi)
Power supplies to convert an ac supply
voltage into a stabilised and regulated                                                                                                   TX6642

Intrinsically Safe source for supplying
power to approved sensors and
electronic control devices.
                                                                                                              Technical Details
••
 ••
•• Choice of I.S. output voltage 12V dc or 7.5V dc.
                                                                                                              Input Voltage:                    24V ac (rms) • 110V ac • 230V ac. 50/60Hz.
••
 ••
•• Regulated output is current limited and has                                                                Output Signal:                    7.5V dc ±0.2V or 12V dc ±0.2V.
    continuous short circuit protection.                                                                      Output Current Options:           0.5A • 1A • 1.4A • 1.8A.
                                                                                                              Output Ripple/Noise:              150mV max.
••
 ••
•• Choice of output current:-
                                                                                                              Line Regulation:                  <5% over the input voltage range.
    0.5A • 1.0A • 1.4A • 1.8A.                                                                                Load Regulation:                  Better than 5% over 10% of load current
                                                                                                                                                (–10% at full load).
••
 ••
•• Available as a chassis or mounted in an Exd
                                                                                                              Voltage Limiting:                 Over voltage detection with fuse
    enclosure.                                                                                                                                  rupturing ‘crowbar’ protection and
                                                                                                                                                short circuit protection.
••
 ••
•• Optional isolation relays.                                                                                 Current Limiting:                 Automatic current limiting to the
                                                                                                                                                intrinsically safe output also limits the
••
 ••
•• Choice of input voltages:-                                                                                                                   current to less than the rupturing
    24V ac (rms) • 110V ac • 230V ac.                                                                                                           capacity of the output protection fuse.
                                                                                                              Max Operating Temp.:              –20°C...+40°C.
                                                                                                              Storage Temperature:              –20°C...+70°C.
                                                                                                              Humidity:                         0...95% RH, non-condensing.



                                                                                                                                          Connections:

 TX6641                                                                         267                                  93                                                        Exi
                                         12.5




                                                                                                                                                                              output
 Intrinsically Safe                                          30                 215
 Power Supply Chassis                                                                                                                      TX6641
                                                                                                                                                                                  0V +V
                                165
                                140




                                                                      4 Ø 6.0 Fixing Holes                                                                      24V ac (rms)
                                                                                                                                                             110V ac or 230V ac
                                                                                                                                                                  Supply




                                                                           310.0                 2 - M20     122.0
                                                                                                 Gland
                                                                                                 Entries.
 TX6642                                               50.0             210.0 Centres                                      38.0
                                      8.0




                                                                                                                                                                          Exi
                                                                                                                                                                         output
 Intrinsically Safe                                                                                                                        TX6642
 Power Supply
 in Exd Housing                                                        Exi Chamber                                                                                       0V +V        Exi Chamber
                                      304.0 Centres




                                                                                                                          304.0 Centres




                                                                       Exd Chamber                                                                                        0V +V
                              320.0




                                                                                                                                                                                      Exd Chamber




                               Earth Stud                                                    8 - 9.0                                                        24V ac (rms)
                                                                           5 - M25 Exd
                                                                           Gland Entries.    Fixing Holes.                                               110V ac or 230V ac
  All dimensions in mm                                                                                                                                        Supply
                                                                                                                                                                                                                                                            control &
                       S                       E      N        S        O            R   S                                                                                                                                                                   display
                                                                                                                                                                                                                                                          s e n s o r s




Power Supplies with Isolating Relays

A standard power supply chassis is fitted and wired with four isolating relays with field connection facilities for coils and
contacts. The coils can be rated for either 7.5V dc or 12V dc operation.

  TX6641.19 Intrinsically Safe Power Supply Chassis, with 4 isolating relays.
                                                                             271
                                                                   267.0 (Baseplate)
                                                                                                                                                                 Flexible connecting leads
                                                                                                                                                             500mm long with male push-on tabs
               30.0                                                          215.0                                                  90.0
                                                                                                                                                                                       Exi




                                                                                                                                                                                                                                           Orange
               12.5




                                                                                                                                                                                                                        Yellow
                                                                                                                                                                                                          Green
                                                                                                                                                                                      output




                                                                                                                                                                                                                                                            Red
                                                                                                                                                                                      0V +V
                                                                                                                                                                                                                  R1             R2                  R3            R4
       165.0

               140.0




                                                                                                                                                                                                       1a 1b 1c 2a 2b 2c                3a 3b 3c 4a 4b 4c

                                                                                                                                                                                                   Contacts shown with relays de-energised
                                                                                                                                                                      24V ac (rms)
                                                                                                                                                                   110V ac or 230V ac
                                                                                                                                                                        Supply
                                                      4   6.0 Fixing Holes.




  TX6642.19 Intrinsically Safe Power Supply in Exd Housing, with 4 isolating relays.
                                                                                             2 - M20                                                                              Exi
                                                                     310.0                                  122.0                                                                output
                                                                                             Gland
                                               50.0             210.0 Centres                Entries.               38.0
                               8.0




                                                                                                                                                                                 0V +V            +V R1            +V R2           +V R3            +V R4         Exi Chamber
                                                                Exi Chamber



                                                                                                                                                                                  0V +V
                               304.0 Centres




                                                                                                                    304.0 Centres




                                                                                                                                                                                                  R1              R2               R3               R4
                                                               Exd Chamber
                       320.0




                                                                                                                                                                                                                                                                  Exd Chamber

                                                                                                                                                                                                 1a 1b 1c 2a 2b 2c               3a 3b 3c 4a 4b 4c



                                                                                                                                                                    24V ac (rms)
                                                                                                                                                                                               Contacts shown with relays de-energised
                        Earth Stud                                  5 - M25 Exd          8 - 9.0
                                                                                         Fixing Holes.                                                           110V ac or 230V ac
                                                                    Gland Entries.
                                                                                                                                                                      Supply
                                                                                                                                      All dimensions in mm

                                                                                                         TX6641.19...101                                                                                TX6641.19...109
  Number of Relays:                                                                                                                                        4
  Relay Contact Type:                                                                                                                                One Changeover
  Relay Contact Rating:                                                                                                                               5A, 230V ac
  Relay Coil Resistance:                                                                                   460 Ohms                                                                                               270 Ohms
  Relay Coil Voltage:                                                                                       12V dc                                                                                                 7.5V dc
  Relay Current
  Consumption (each):                                                                                          26mA                                                                                                    27mA




Certification

The TX6641 and TX6642 Power Supplies are designed and approved to meet the ATEX directive(94/9/EC).                                                                                                               TX6641 – Exia I
                                                                                                                                                                                                                  TX6642 – Ex [ia]d I



Order Reference
                                                                                                                                                                                               INPUT VOLTAGE OPTIONS:
TX6641                                          INTRINSICALLY SAFE POWER                                                                                                                       • 24V ac (rms)                                                                   (103)
                                                                                                                                                                                               • 110V ac                                                                        (105)
                                                SUPPLY CHASSIS.                                                                                                                                • 230V ac                                                                        (106)
                                                (Supplied loose, ready for fitting and wiring).
                                                                                                                                                                                               OUTPUT CURRENT OPTIONS:
                                                                                                                                                                                               0.5A                                                                             (1205)
                                                                                                                                                                                               1.0A                                                                             (1204)
                                                                                                                                                                                               1.4A                                                                             (1203)
                                                                                                                                                                                               1.8A                                                                             (1202)
TX6642                                          INTRINSICALLY SAFE POWER SUPPLY.
                                                                                                                                                                                               OUTPUT VOLTAGE OPTIONS:
                                                IN Exd HOUSING.                                                                                                                                7.5V dc Exi                                                                      (109)
                                                                                                                                                                                               12V dc Exi                                                                       (101)




   TX6641.19                                               INTRINSICALLY SAFE                                                                 TX6642.19                   INTRINSICALLY SAFE
                                                           POWER SUPPLY CHASSIS                                                                                           POWER SUPPLY
                                                           WITH 4 ISOLATING RELAYS.                                                                                       IN Exd HOUSING WITH 4 ISOLATING RELAYS.



GROUP ELECTRONICS PTY LIMITED
47-49 Southern Road (PO Box 55) MENTONE Victoria 3194
(PH) +61 (0)3 9484 1085 (FAX) +61 (0)3 9584 1867
(email) groupelectronics@wtcorp.com.au (WEB) www.wtcorp.com.au

				
DOCUMENT INFO
Shared By:
Categories:
Stats:
views:134
posted:4/5/2010
language:English
pages:2
Description: INTRINSICALLY SAFE POWER SUPPLY (Exi) control & display control