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16
F-Guard UV-IR User Manual
Doc. No. F110V0020.06
T
ABLE
1:
T
ERMINAL CONNECTIONS
Pin #
Function
Description
Ground
Ground (earth)
Connected to a screw on the housing exterior.
1
24 VDC (+)
Power supply (18-32 VDC)
2
24 VDC (-)
Power supply return (0V)
3
0-20mA+ (In)
This output is used for analog 0-20 mA current output
4
0-20mA- (out)
5
Fault Relay
A normally open SPST contact relay, is energized (closed) when the
detector is in normal operation and opens under fault conditions.
6
Fault Relay COM
7
Alarm Relay (NO)
A normally open SPST contact relay, that is open in normal operation
and closed when a fire is detected. This relay can be configured to latch
as described in section (3.4).
8
Alarm Relay COM
11
24 VDC (+)
Power supply (18-32 VDC)
12
24 VDC (-)
Power supply return (0V)
13
Manual BIT activation The manual BIT (built-in test) can be initiated by momentarily
connecting this terminal and one of the “24 VDC (-)” terminals (2 or 12).
See 3.10 Manual BIT – Alarm Output Test for more details.
14
Shield
This terminal should be left connected to the housing internal ground
screw.
15
RS-485 (+)
RS-485 Modbus communication (also used by the “FGD Communicator”
software)
16
RS-485 (-)
17
Auxiliary Relay NO
A normally open SPST contact relay, that is open in normal operation
and closed according to the configuration used.
18
Auxiliary Relay COM