11-1
Chapter 11
4910 Power Supply Unit
Description
The 4910 PSU provides up to 5A continuous smoothed and regulated
12V nominal DC output, sufficient for four fully populated 4101-2
Controllers without providing lock power. Alternatively it can supply
one fully populated Controller and up to 3.2A further load which
represents eight locks each drawing 400mA continuously or 500mA
with an 80% duty ratio. There is a 12V/24V converter module (4915)
which can be used to provide 24V DC auxiliary output at 1.28A. This
is equivalent to eight locks each drawing 160mA continuously or
200mA with an 80% duty ratio. The 4910 PSU includes a 6Ah battery
to provide battery backup when the mains fails. The PSU can be
purchased without the battery by ordering it as a 4911.
Chassis
Base
Battery
management
board
Mains input
board
Tamper
sensor
and LEDs
Mains cable
clamp
Cable
clamps
PSU
connector
board
DC out
connector
12V/24V
converter
board
(if fitted)
Battery
housing
undo these six screws to remove chassis
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