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EN54 FIREFINDER PLUS INSTALLATION,COMMISSIONING & OPERATION
12.8.2 Remote Relay Board
In the remote version the Comms In and Out Terminal Block TB9 is cabled to the RS485 Comms
terminal block TB1on the Communications Extender Board (see section 5.12) and can be installed
up to 1.2kms from the FACP.
Note: Can be powered from the panel or an external 27 volt source.
Fit EOL Termination
Link 1 if Last Module
on Comms Bus
Address SW
(See Note)
ON
27 Volts In
(External Supply)
TB8
TB7
TB6TB5
TB4
TB3
TB2
TB1
O/P 8
N/C
COMN/0
O/P 7
N/C
COMN/0
O/P 6
N/C
COMN/0
O/P 5
N/C
COMN/0
O/P 4
N/C
COMN/0
O/P 3
N/C
COMN/0
O/P 2
N/C
COMN/0
O/P 1
N/C
COM
N/0
N/0 = Normally Open
COM = Common
N/C = Normally Closed
TB8
TB7
TB6TB5
TB9
TB4
TB3
TB2
TB1
SW1
TB10
-
+
O/P 8
N/C
COMN/0
O/P 7
N/C
COMN/0
O/P 6
N/C
COMN/0
O/P 5
N/C
COMN/0
O/P 4
N/C
COMN/0
O/P 3
N/C
COMN/0
O/P 2
N/C
COMN/0
O/P 1
N/C
COMN/0
RS485+
RS485-
SHD
RS485 COMMS IN / OUT
To TB3 on the Main
Card and/or Zone
Mimic Card
1 2 3 4
ON
-
+
27 Volts Out
(External Supply)
RS485+ SHD
RS485-
Figure 84: Remote 8 Way Relay Board Front View showing connectors and Address Switch
Relay Connections
N/O = Normally Open,
C = Common
N/C = Normally Closed
Communications Connections
Note: See Section 17 for Addressing Details (SW1)
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