ProFire PF3100 Product Manual page 119

14.3.21 SINGLE-ELEMENT THERMOCOUPLE WIRING
PF3103-00 Temperature Card
Fault
9 – PFRN IO Bus
PF3103-00
TC Temp. Module
v1.x
14.3.22 THERMOCOUPLE FLAME DETECTION
PF3102-00 Ion Pilot Card
1 LEL IN -
2 LEL IN +
3 VALVE -
4 VALVE +
5 MAIN ION +
14.3.23 MODBUS INPUT WIRING
PF3107-00 Modbus Card
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1
+
TC1A
-
Red 2
3
+
TC1B
-
Red
4
Type K Thermocouple
-
OUT
+
Link
+
IN
Power
-
Thermocouple
to 4-20mA
temperature
transmitter
Flame Detection
Thermocouple
GND
DATA- / A
DATA+ / B
RS-485 Master
Installation Notes:
1. TC1A input wiring shown as
Thermocouple can be wired to TC1B, TC2A and TC2B in
the same way.
2. Thermocouple must be ungrounded Type K.
3. Thermocouple wire run lengths should be minimized
where possible.
4. Thermocouple wires should not be run in the same
conduit as high-noise signals (e.g., valve wires, motor
wires, etc.)
Installation Notes:
1. Modbus wires should not be run in the same conduit as
high-noise signals (e.g., valve wires, motor wires, etc.)
2. Move Dip switch to the "Term" position to activate the
termination resistor. Termination is recommended if the
Modbus card is on the end of the Modbus chain
PF3100 Product Manual
DOC-001149 v8.0
an example only.
119