FireFinder
™
Installation Commissioning & Operation
Page 11
5.9
Current Limiter, Fuse Board
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
F4
F3
F2
F1
C N5
CN 4
C N3
CN2
CN 1
HS1
TB1
TB4
Q3
Q1
Q2
RV1
U2
U1
N1236
BRD85CLFB1-A
1A
1A
1A
1A
1A
+ OUTPUT -
+ BATT -
+ PSU I/P -
TO
302-6730
TB1
+27V
0V
+BATT V
CN1-5 PINOUT = 0V, +27V, 0V
0V+27V 0V
+27V 0V
T O
302-6730
C N1
MAF, FRONT DOOR
AND BACKPAN
DISTRIBUTION
DISTRIBUTION
EV60 / 120 TONE GEN
Figure 9: Current Limiter Fuse Board
Connecting the Mains Earth
1.
All earth cabling shall be terminated to the panel Chassis Earth Terminal in a star configuration.
2.
The earth cable closest to the cabinet body shall have an M4 SPW beneath the lug then an M4 SPW
and M4 nut.
3.
Each additional earth cable shall be terminated with an M4 SPW and M4 nut.
4.
An additional M4 nut and M4 SPW are fitted to the Chassis Earth Terminal for installers to connect
their Mains Earth.
Figure 10
:
Panel Earthing
M4 Shake Proof Washer
M4 Shake Proof Washer
CHASSIS EARTH TERMINAL
M4 Nut
Earth Cable
Earth Cable
M4 Nut
M4 Shake Proof Washer *
M4 Nut *
Note:
* Extra M4 Nut and M4 SPW are
provided finger tight on the Earth bolt.
Summary of Contents for SP Series
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