447073 ISSUE I REV. C
PAGE 2 OF 2
12507/12508 WIRING
Notes:
1.)
Units to be installed in accordance with all local codes.
2.)
T-Tapping is not allowed! Communication wiring must be daisy chained from unit to unit.
3.)
Terminal block will accept a maximum of 12 AWG wiring
4.)
Use tw isted pair cable with a characteristic impedance of approximately 120 ohms. 4000 feet maximum distance from
end to end.
5.)
Power Limited wiring must be kept separate from non-power limited wiring, ¼ “ minimum.
6.)
The following table gives the currents necessary for power supply and battery calculations.
Model
Standby Current
Alarm Current
12507
0.010 A.
0.170 (All relays activated)
12508
0.000 A.
0.160 (All relays activated)
12507 ADDRESS SETTING
Address
Switch 1
Switch 2
Switch 3
Switch 4
1
On
On
On
Not Used
2
Off
On
On
Not Used
3
On
Off
On
Not Used
4
Off
Off
On
Not Used
5
On
On
Off
Not Used
6
Off
On
Off
Not Used
7
On
Off
Off
Not Used
8
Off
Off
Off
Not Used
PROCESSOR BOARD HEADER CONNECTIONS
Pin
P2 - Processor Board
1
24V Output
2
Not Used
3
Lamp Test Switch
4
Alarm Silence Switch
5
Trouble Acknowledge/Silence Switch
6
System Reset Switch
7
Remote Buzzer Output (open collector)
8
Alarm Silence Output (open collector)
9
Trouble Output (open collector)
10
Minus
SW-1
OFF ON
1
2
3
4
Relay Contacts
(Shown in normal standby condition)
1A@28VDC max., Resistive
For Power Limited Source, Unsupervised
Cable for power (+ & -) and
Twisted pair Cable for data
(X+ & X-) from panel or
previous remote.
Cable for power (+ & -) and
Twisted pair Cable for data
(X+ & X-) to next remote or
120 ohm termination resistor
(Faraday P/N 942664) on
the last remote.
TB3 allows for connection
to an external regulated and
power limited 24VDC power
supply, listed for fire
protective signaling use.
Cut jumper WJ1 when
external power is used.
Power Limited, Supervised
