Specifications

Page 11
FIREFINDER SERIES II INSTALLATION, COMMISSIONING &
OPERATION
4.9 Current Limiter, Fuse Board (BRD85CLFB)
The Current Limiter, Fuse Board provides protection for the boards, cards and other 27VDC
distribution within the FACP when the 18Amp power supply is used. The four LED’s associated with
the board indicate that 27VDC is available at each of the outputs CN1 – 5.
F5
F4F3
F2F1
CN5
CN4
CN3
CN2CN1
HS1
TB1
TB4
Q3
Q1 Q2
RV1
U2
U1
N1236
BRD85CLFB
1A 1A 1A 1A 1A
+ OUTPUT -
+ BATT -
+ PSU I/P -
TO
BRD85BPMB
TB1
+27V
0V
+BATT V
CN1-5 PINOUT = 0V, +27V, 0V
0V+27V 0V
+27V
0V
TO
BRD85BPMB
CN1
MAF, FRONT DOOR
AND BACKPAN
DISTRIBUTION
DISTRIBUTION
EV60 / 120 TONE GEN
(Not Current Limited)
Figure 10: Current Limiter Fuse Board