FDP CFN - 3.3.2 MOTHERBOARD

Page 10 of 35
Rev. 1.03
3.3.2 Motherboard
AUX 24V FUSE C NC NO
Relay 1
+ -
24V aux
. + -
Out 1
. + -
Out 2
. C NC NO
Relay 2
+ -
Line 1
. + -
2.Line
+ -
3.Line
+ -
4.Line
+ -
5.Line
+ -
6.Line
1 2 3 4 5 6
Open collector
24V aux fuse
Relay 1
Relay 2
24V aux
Output 2
Output 1
Zones
Open collector
End of line resistors:
10Kohm 1/4W 3.9Kohm ½ W
The motherboard is composed of:
1) One fuse for the 24Vdc aux output protection.
2) Two relay outputs (N-NC-NO):
a. Relay 1 for the alarm signalling.
b. Relay 2 normally on for the fault signalling.
3) Two supervised siren outputs:
a. Output 1 for the alarm signalling.
b. Output 2 for the pre-alarm/alarm signalling.
4) Two, four or six supervised zone inputs (variable number at depending on type of the
control panel).
5) Outputs of zone repeat; two, four or six open collector outputs (variable number at
depending on type of the control panel).