Specifications

Page 57
EN54 FIREFINDER PLUS INSTALLATION,COMMISSIONING & OPERATION
12.7 16 Way Input Board
The 16 Way Input Board (BRD25SIP) makes provision for 16 voltage free contacts to be terminated
to 16 optically coupled inputs. Its application is primarily for the monitoring of controlled ancillary
equipment or to initiate an action / event due to a change of state from what is accepted as the norm.
Fit EOL Termination
Link 1 if Last Module
on Comms Bus
Address SW
(See Note)
INPUTS
1 2 3 4 0V
INPUTS
5 6 7 8 0V
INPUTS
9 10 11 12 0V
INPUTS
13 14 15 16 0V
0V
Not used optional 27V
TB9TB8TB7TB6TB5TB4TB3
RS485 Control / 27VDC
Comms Out
CN2
CN1
CN3
CN4
TB2
1 2 3 4
ON
ON
RS485 Control / 27VDC
Comms In
INPUTS
1 2 3 4
INPUTS INPUTS INPUTS
0V
TB9TB8TB7TB6TB5TB4TB3TB2
0V
5 6 7 8
0V
9 10 11 12
0V
13 14 15 16
0V
+
-
Figure 82: Typical Input Wiring and Board Layout Front View showing connectors and Address Switch
Connections
Terminal/s
Function
TB2 to 9
Taking note of the Common 0v
terminals connect the voltage free
contacts as shown above.
Inputs 1 to 16
 Note: See Section 17 for Addressing Details (SW1)