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9(46)
Date
Rev
Documentnumber
Prepared
Doc respons/Approved
Checked
Reference
1998-05-29
L
1531-BDV BS 101 01 Uen
INSTALLATION INSTRUCTION
Subject responsible
5
POWER SUPPLY UNIT
The power supply units (PSU) for the cabinet are
AC/DC switching power supplies with two input voltage
ranges. Please check if the label states the proper
mains voltage as required. For mains supplies with
230V to 250V AC, two versions are available:
•
BML BS 101 02/1 (PSU 230V standard)
•
BML BS 101 01/1 (PSU 230V equipped with
battery charger).
For mains supplies with 115V to 127V AC two versions
are available:
•
BML BS 101 02/2 (PSU 115V standard)
•
BML BS 101 01/2 (PSU 115V equipped with
battery charger).
The PSUs deliver 25 W on the PBA supply voltages
and 80 W on the 48 V supply voltage. After switching
on, the power supply has a start-up delay of 8
seconds.
Warning: The power switch does not disconnect
from mains. The mains cord must be unplugged to
disconnect the mains.
The PSU is equipped with a mains fuse rated
250VAC 6,3 A T.
NOTE: This fuse NGH 243 01/6300 can be ordered
from Ericsson but is a non-accessible and non-user
serviceable part. Only authorised personnel is
allowed to change the fuse. Contact the local
supplier in this matter.
Battery backup time
The batteries in the integrated battery pack have a
capacity of 2Ah. The power consumption on the 48 V
should be less than 1.7A. Using fresh batteries a
backup time of 20 minutes is guaranteed and
depending on the system configuration longer backup
times could be achieved.
5.1
Replacement of the power
supply unit
The cabinet is delivered with a PSU already installed.
The procedure how to dismount the unit is described
below.
a
Switch off the PSU (A) and unplug the mains
from the wall outlet. If the unit is a PSU with
battery charger, disconnect the DC supply line to
the batteries and plug off the alarm connector on
the unit.
b
Disconnect the DC supply cord (D) to the swivel
shelf.
c
Unscrew the transport screw (B) completely and
make 3 turns on screw (C) counter clock wise.
d
Push the PSU from the bottom and turn out the
PSU clock wise, unhinge and take it out. Then
pull off the mains plug at the bottom of the PSU
and disconnect the ground wire.
e
Install the PSU in the reverse manner.
When installing a power supply unit with battery
charger and battery backup please refer to the
INSTALLATION INSTRUCTION
(1531-BML BS 101 01)
Power switch
does not
disconnect
unit from
mains.
Mains power cord plug
IEC 320 C17
Standby only
(B)
(C)
(D)
Ground
Label
(A)