Connecting Mains to the Power Supply PCB
The panel’s PSU combines the functions of a power supply unit, battery charging unit, battery
monitoring unit and earth fault monitoring unit. It is positioned in the panel’s enclosure as shown in
Fig.3 below.
CAUTION: DO NOT CONNECT MAINS TO THE POWER SUPPLY PCB UNTIL THE INSTALLATION
IS COMPLETE AND ALL RELEVANT PCBs ARE CORRECTLY FITTED IN THE PANEL.
Fig.3 : Power Supply PCB layout and mains connection details (Full Protective Cover & Cable Cover
shown fitted)
ENGINEERING MANUAL • Approved Document No. DFU5010020 Rev 4 • Page 8 of 48
CAST XFP 32 ZONE ANALOGUE ADDRESSABLE FIRE ALARM PANEL
BAT
FUSE F
3.15 A H
BAT1
+
_
PL1
THIS
WAY UP
F3
L
N
CONN1
Cable cover removed
Incoming Mains Cable
This cable MUST be segregated
from other cables. Good quality
cable glands MUST always be fitted.
10-way PSU loom
(connects to the
Main Control PCB).
DO NOT REMOVE
WHEN PANEL IS
POWERED!
PSU Earth Distribution Strap
The strap MUST be connected
to the spade on the base earth
distribution post before operation.
nut
3 x plain
washer
Do not untighten lower nut
spring
washer
Base Earth Distribution Post
PSU Earth
Distribution
Strap
The incoming mains
earth wire MUST be
connected to the
terminal marked
and NOT to the base
earth distribution
post.
Mains Input (CONN1)
L = Live (BROWN)
N = Neutral (BLUE)
= Earth (GREEN/YELLOW)
Primary Fuse (F1)
Exposed Live parts
under fuse cover.
Isolate before
removal.
Battery Connector (BAT1)
(Leads supplied in the panel’s
accessory pack.) See page 12
for connection details.
Battery Fuse (F3)
WHEN THE RED ‘HAZARDOUS VOLTAGES
PRESENT’ LED IS LIT HAZARDOUS
VOLTAGES ARE PRESENT UNDER THE
COVER. ALLOW TO DISCHARGE FOR AT LEAST 5
MINUTES BEFORE REMOVAL & HANDLING.
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