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Wiring the Relay Module to an FACP
Refer to the following table and illustration for wiring connections.
1.
All connections/sources are to be power-limited and
supervised.
2.
12 - 18 AWG (0.75 - 3.25 mm
acceptable. Refer to the appropriate FACP manual.
3.
Power wire distance limitation is set by 1.2 volt maximum line
drop from source to end of circuit.
4.
Maximum distance from FACP to last ANN-BUS device must
not exceed 1,250 feet (380 m). Refer to Wiring Distance
Table in appropriate FACP manual for wire gauge and
distance limitations.
Setting Relay Module DIP Switches
Each ANN-BUS device requires a unique address. Relay Module DIP switch SW1 is used to set the address for the mod-
ule. A maximum of 8 devices can be connected to the FACP ANN-BUS communication circuit. ANN-BUS device
addresses do not need to be sequential and can be set to any number between 01 and 08. Note that 00 is not a valid
address. The following illustrates the DIP switch settings for each address (ID Number):
2
2
) wire for 24 VDC circuit is
B (ANN-BUS)
A (ANN-BUS)
+ (24 VDC)
- (GND)
Relay Module
Relay Terminals (TB1) FACP ANN-BUS Terminals
Terminal 1 (B)
Terminal 2 (A)
Terminal 3 (+)
Terminal 4 (-)
}
Connect to FACP ANN-BUS and/or next device
}
Connect to FACP or next device
ROME Series Installation Document — P/N 53530:B 9/14/2009
B (ANN-BUS)
A (ANN-BUS)
(+)
(-)
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