SST F120 - Terminal Connections

120-26 January, 2016
Model F120 UV/IR Flame Detector
Factory Recommended Wires
Use 16 or 18 AWG (1.5 or 0.75 mm
2
) wires whenever possible.
Terminal Connections
Terminal
Number
Marking Connection Description
1 SPARE
2 SPARE
3 SPARE
4 RESET ALARMS Remote Reset Resets Latched Alarm
Relays
5 0-20 mA OUTPUT Analog Output Current Source Output
stepped to indicate
operating mode: Ready,
Alarm, Delayed Alarm,
Malfunction, Power Fault
6 LOCAL 0 VDC OUT (-) Power Output Power Source for another
Flame Detector
7 0 VDC IN (-) Power Input To Power Source
16 to 32 volts DC (-)
8 LOCAL +24 VDC OUT (+) Power Output Power Source for another
Flame Detector
9 +24 VDC IN (+) Power Input To Power Source
16 to 32 volts DC (+)
10 SURGE GROUND Transient Voltage
Suppressors
Connect direct to Earth
Ground if severe lightning
possible (Otherwise
jumper to terminal 7)
11 SPARE
12 - 13 CLOSED ON FAULT
FAULT RELAY COM
Contact set closes on
loss of power or detec-
tor fault
Fault Relay
Voltage free contact
13 - 14 FAULT RELAY COM
OPEN TO FAULT
Contact set opens on
loss of power or detec-
tor fault
Fault Relay
Voltage free contact
15 - 16 CLOSED ON DELAY
DELAY RELAY COM
Contact set closes when
alarm condition persists
for 3 or 6 seconds
Delayed Alarm Relay
Voltage free contact
16 - 17 DELAY RELAY COM
OPEN ON DELAY
Contact set opens when
alarm condition persists
for 3 or 6 seconds
Delayed Alarm Relay
Voltage free contact
18 - 19 CLOSED ON ALARM
ALARM RELAY COM
Contact set closes when
alarm condition exists
Alarm Relay
Voltage free contact
19 - 20 ALARM RELAY COM
OPEN ON ALARM
Contact set opens when
alarm condition exists
Alarm Relay
Voltage free contact