FGD FlameSpec IR3-H2, User Manual

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FlameSpec IR3-H2 User Manual F150V0020.04
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4 Detector Wiring
WARNING
The sensor module in the front half of the detector contains no serviceable components and
should never be opened. The terminal compartment at the back is the only part of the housing
that should be opened by the user.
4.1 Wiring Functions:
The detector has 20 terminals as defined in the following table:
T
ABLE
3: 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, that is energized (closed) when the
detector is in normal operation, and opens in case of fault.
6
Fault Relay COM
7 Alarm Relay (NO) A normally open SPST contact relay, that is open in normal operation,
and closed when 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 short
circuiting this terminal and one of the “24 VDC ( - )” terminals (2 or 12).
See 3.7 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 (used by the “ FGD Communicator ”
software)
16
RS485 (-)
17 Fault Relay (NC)
18 Alarm Relay (NC)