OPERATOR MANUAL // SECTION 5: PINOUT DATA
HONEYWELL
20
PIN
Description
1
DCRtn
(Not Chassis Ground)
2
Data “A” (RS-485 COMM A)
3
Data “B” (RS-485 COMM B)
4
DC (
+
) Voltage
5
Fault Relay Contact A
(Normally energized CLOSED)
6
Fault Relay Contact B
(Normally energized CLOSED)
7
Alarm Relay Contact A
(Normally OPEN)
8
Alarm Relay Contact B
(Normally OPEN)
9
Not used
10
Not Used
Table 3: Flame Detector Connector Pin-outs for FS10-R45 type Detectors
DO NOT CONNECT SHIELD AT THE FLAME DETECTOR.
Note: COMM as it is used in this document is an abbreviation
for Communications.
Detector relays are shown as they are during Normal
Operation, that is, there are no Fire Alarm conditions
or Faults.
