Unifire SUPERVISOR I, Installation And Operation Manual, Page: 13 / 22

0014_Installation_Operation_Manual Draft
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Copyright 2017 Unifire
The module includes a field interface board to which all field connections are made. Connections
available are as follows.
Connection Terminal ID Function Specification
1 24V_1 24VDC Input
2 24V_2 24VDC Input
3 0V_1 0VDC Input
4 0V_2 0VDC Input
X801
X802
1 AI+ 4-20mA +ve
2 AI- 4-20mA -ve
3 SHLD 4-20mA Shield
1 TC+ Type K +
2 TC- Type K -
3 SHLD Type K Shield
1 COMM1+
2 COMM1-
3 SHLD
1 24VDC+
24VDC Source
2 DI1 Process switch input
1 24VDC+ 24VDC Source
2 DI2 Start/Reset Input
1 n/a
2 n/a
1 24VDC+
24VDC Source
2 DI3 Flame Scanner Input
1 COMM2+
2 COMM2-
3 SHLD
1 DO1
Pilot Solenoid Drive
2 COM Pilot Solenoid Return
1 24VDC+ 24VDC Source
2 DO2+ DO2 Source Power
3 DO2 DO2 Status Output
4 COM DO2 Status Return
1 IGN Ignition Drive
2 COM Ignition Return
1 24VDC+ 24VDC Source
2 DO3+ DO3 Source Power
3 DO3+ DO3 Status Output
4 COM DO3 Status Return
1 FR Flame Rod Signal
2 BRNGND Burner Ground
1 GND1
Appliance Ground 1
2 GND2 Appliance Ground 2
1 GND3 Appliance Ground 3
2 GND4 Appliance Ground 4
For connecting to appliance ground. Separated
from the 0VDC of the module.
Reserved
Reserved
Reserved
Reserved
Reserved
Discrete 24VDC Input for connection to process
trips. Max 12-24VDC 3A.
Discrete 24VDC Input for START/RESET command.
Max 12-24VDC 3A.
Discrete 24VDC Input for Flame Scanner status. Max
12-24VDC 3A.
SW800 Factory Wired
X812
X815
X816
X814
X807
X808
X809
X810
X811
Output Driver for Pilot Solenoid (or Main in direct
ignition mode). 24VDC @ 3A or low power mode.
Output Driver for status on proven flame. 24VDC @
3A. DO2+ can be jumpered to board 24VDC+ source
or externally sourced.
24VDC 3A Ignition output for connection to ignition
transformer.
Output Driver for status on proven flame. 24VDC @
3A. DO2+ can be jumpered to board 24VDC+ source
or externally sourced.
150V Flame rod signal. Connect to flame ionization
rod, connect BRNGND to burner.
Terminals are connected on the board. Providing
redundant 24VDC connection point.
Terminals are connected on the board to provide
redundant 0VDC connection point.
Factory wired
Factory wired
Reserved
4-20mA input for connection to process transmitter
or gas pressure transmitter.
24VDC Loop power.
Type K Thermocouple Input
X813
X800
X803
X804
X805
X806
Figure 4 - Field Interface Board Connections