INSTALLATION & MAINTENANCE MANUAL • Approved Document No. DFU7002020 Rev 4 • Page 8 of 24
LPCB APPROVED CFP ALARMSENSE 2/4/8 ZONE FIRE ALARM PANEL
Typical conventional sounder circuit wiring
Four conventional sounder circuits are available on the fire alarm panel. These are designed for use with
conventional sounders and bells only. AlarmSense™ sounders should not be used on the conventional sounder
circuits.
Figure 5 : Typical conventional sounder circuit wiring
All sounders must be polarised as unpolarised sounders will show a sounder fault.
Connect a 6k8 end-of-line (EOL) resistor (provided in the panel’s accessory pack) at the end of each sounder
circuit to allow the wiring to be monitored. Unused sounder circuits must also have an EOL resistor fitted at
the panel terminals.
Note: Any sounders fitted must be locked to their base or non-removable.
The wiring for each conventional sounder circuit should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the panel’s base earth distribution post (see page 13 for
detailed second fix connection details).
Important sounder loading and distribution information
The panel’s power supply is designed to give a maximum output current of 1.5A. In addition to powering the
sounders, this current is also used for handling short circuit faults and supplying the panel’s battery charging
circuit and any output relays which may be fitted. As a safe margin and to allow for these other loads, the total
sounder loading for the panel should not exceed a maximum of 1.25A.
Each zone circuit and each conventional sounder circuit will support a maximum sounder alarm current of
200mA. Currents in excess of this value will cause the circuit’s fuse to trip.
The sounders should be distributed throughout the building according to the sound levels required, but the
load should be distributed as equally as possible across each circuit.
Note that faults on zone circuits affect the detectors, manual call points and sounders, so plan accordingly for
the effect of possible wiring faults.
Typical auxiliary input wiring
Two non-latching auxiliary input connections are available on the panel, as detailed below:
Alert Input (ALERT): Operates the sounders intermittently when connected to 0V.
Class Change Input (CC): Operates the sounders continuously when connected to 0V.
If either of the above are triggered, they WILL NOT operate the panel’s remote or auxiliary fire outputs.
Figure 6 : Typical auxiliary input wiring
Connect the wiring for each
input to the relevant 5mm
connector block on the Main
Control PCB and terminate
their screens at the panel’s base
earth distribution post (see
page 13 for more details).
END OF LINE
RESISTOR
(6k8 Ohm)
POLARISED
SOUNDER
POLARISED
SOUNDER
+
+
+
–
+
POLARISED
SOUNDER
+
✗
DO NOT SPUR
(wiring not
monitored)
PANEL
SOUNDER
CIRCUIT
TERMINALS
ALERT
CC
0V
CLASS
CHANGE
INPUT
ALERT
INPUT
