Andover Controls CONTINUUM - UPS Connections; Backup Battery Connection

Continuum Power Supply Reference 11
UPS Connections
The following information pertains to the AC 50-U and AC 85-U models only.
Backup Battery Connection
The PS 120/240 AC 50-U and AC 85-U power supplies include provisions for
connecting an external lead-acid battery supply to power the system in the event of a
main AC power failure.
An external 24 Volt battery pack may be sized to provide the hold-up time specified
by system requirements. Using standard 12V or 24V batteries, (120 to 160 W
•
Hr),
the built-in UPS circuitry provides a backup time of 60 minutes @ 35 Watts power
consumption. The integral 15 Watt battery charger has a worst case charging time of
48 hours with two (2) 12V, 7.0 Ahr batteries.
For UL 1076 applications, two 12 VDC 40Ahr batteries insures a supply that will
power approximately 5 hours of back-up operation. For more information, obtain the
Continuum UL 1076 Burglar Alarm System Guide 30-3001-800.
To protect the batteries, the battery cutoff circuitry will activate at 20.4 volts.
The external battery pack connects to the module through a two-position screw
terminal connector. Replacement of the external battery for maintenance purposes
may be performed while the unit is AC powered without interruption of service.
Connect the battery pack as follows:
Bottom of Case
BAT
(+)
BAT
( )
24VDC
Battery
Supply
12V
Battery
(+)
12V
Battery
( )
(+)
( )