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CHAPTER 4 - INSTAllATION INSTRUCTIONS
MAN0448_Issue 13_01-2010
5704 Control System
005704-M-5001 A03249
12. SENSOR CONNECTIONS
12.1 General
WARNING
Incorrect connection of the sensor wires may cause damage to
both the sensor and System 57.
CAUTION
The sensors connections must always be made with the System
57 unit in an unpowered state. Isolate power supplies at their
source before making connections.
Ensure that any external dc backup battery supply is also
disabled.
IMPORTANT
In order to ensure the correct operation of the system and to meet
European Standards for RFI and EMC, all sensor field cables
must be screened. The cable screen of each sensor should be
connected to the cabinet protective earth.
Connect the cabling to sensors in accordance with the Sensor Operating
Instructions and run the field cables back to the System 57 unit. The
sensor cables should be routed away from sources of interference such
as ac power cables, motors, machinery etc.
Use the information on the configuration sheet provided with the unit to
decide which sensor to connect to each channel. The following sections
describe the sensor connections for the Catalytic and 4 - 20mA input
Four Channel Control Cards.
12.2 Catalytic Sensor Connections
Catalytic sensors require a three wire connection and the sensor
documentation will indicate three connections S, 01 and NS, which are
usually brown, white and blue respectively.
At the System 57 end of the field cable, the three sensor wires should
each be connected to the respective matching S, 01 or NS terminal
of the appropriate channel on the Quad Relay Interface Card that is
attached to the required Four Channel Control Card.
Summary of Contents for 5704
Page 1: ...System 57 5704 Control System Operating Instructions ...
Page 4: ...4 MAN0448_Issue 13_01 2010 5704 Control System 005704 M 5001 A03249 ...
Page 6: ...6 MAN0448_Issue 13_01 2010 5704 Control System 005704 M 5001 A03249 User Notes ...
Page 14: ...1 8 MAN0448_Issue 13_01 2010 5704 Control System 005704 M 5001 A03249 User Notes ...
