XFP 16 ZONE ANALOGUE ADDRESSABLE FIRE ALARM PANEL
XFP ENGINEERING MANUAL • Approved Document No. DFU1200510 Rev 3 • Page 10 of 36
Conventional sounder circuit wiring
Two conventional sounder circuits are provided. These can accommodate up to 40 conventional
polarised sounders (at 20mA) or 32 bells (at 25mA) per system. If a full complement of sounders or
bells are to be used, split them equally across both circuits. A 6k8 end of line resistor (provided) must
be connected at the end of each sounder circuit to allow the wiring to be monitored. If the sounder
circuit is unused, you must still connect the 6k8 resistor at the panel. Remember to isolate the
panel’s Mains and battery backup supplies before making any connections.
Each sounder circuit should be connected to the terminal marked
Sounder Circuits
on the Main Control PCB
as shown in Fig. 6 below and its earth screens terminated at the panel’s base earth distribution post.
Fig. 6 : Typical conventional sounder circuit connection and detail
Auxiliary input wiring
Two programmable auxiliary input connections are
provided. These can be programmed using the panel’s
PC programming software tools to operate as required.
The wiring for each input should be connected to the
terminal block marked
Auxiliary
on the Main Control
PCB as shown in Fig. 7 right. Remember to isolate the
panel’s Mains and battery backup supplies before
making any connections.
If applicable (i.e. in electrically noisy environments),
input wiring screens should be terminated at the
panel’s base earth distribution post in the same way as
the analogue loop earth screens, as detailed on page 9.
Relay output wiring
Four volt-free relay output connections are provided - a failsafe fault output, which switches for any
fault condition, and three programmable auxiliary relay outputs. All four relays are capable of switching
1A @ 30Vdc. They should NOT be used for switching Mains voltages.
The three auxiliary outputs (Relays 1, 2 and 3) can be programmed using the panel’s PC programming
software tools to operate as required but their default operations are:
Relay 2
C NO
Relay 3
NC C NO
Fault
NC C NO
Sounder Circuits
+ 1 -
+ 2 -
Earth Fault Detect
Addressable Loop
+ A -
+ B -
Conventional
sounder circuit
For more precise earth screen termination
details refer to the typical analogue loop
wiring diagram on page 9.
Earth distribution strap
from power supply PCB
END OF LINE
RESISTOR
(6k8 Ohm)
POLARISED
SOUNDER
POLARISED
SOUNDER
+
+
+
–
+
POLARISED
SOUNDER
+
✗
DO NOT SPUR
(wiring not
monitored)
PANEL
SOUNDER
CIRCUIT
TERMINALS
Fig. 7 : Typical auxiliary input wiring / connection
Auxilliary
+24V I/P1 I/P2 0v
Relay 1
NC C NO
Input 1
Input 2
Conventional sounder circuit detail
