MAIN PROCESSING CARDS
46
APS-14127-00 Auxiliary Power Supply
The APS-14127-00 auxiliary power supply provides two power limited outputs, each rated at 28VDC and 2A. Both out-
puts can be used simultaneously and the total current available from the power supply is 2.5A in standby condition and
4A in alarm. In the event the main AC fails, the auxiliary supply battery will be connected without delay on the output
ensuring an uninterrupted supply to external circuitry. Output voltage is regulated at 28VDC during AC power condition
and will follow battery voltage (27 to 20VDC) during battery back-up periods. The battery will be disconnected at a volt-
age of 19.5V or less in order to prevent battery damage due to over-discharging.
The power supply has provision to charge batteries with 10 to 42 AH capacities. Normally open dry contact outputs are
provided to signal AC fail, DC fail or ground faults condition.
The two power-limited outputs are not supervised at the auxiliary power supply: The applications shown elsewhere in
this document will provide supply line supervision when wired as recommended.
APS-14127-00 Auxiliary Power Supply Enclosure Installation
Sufficient clearance must be provided around the unit to allow the enclosure door to be fully opened (180°) without
impediment. The enclosure box may be semi-flush mounted provided no less than 5 cm (2 inches) of the box frame
protrudes from the wall surface.
The top of the enclosure should be no more than 2.0 meters (6.7 feet) above the finished floor. Recommended
mounting hardware: four ¼" pan head screws (If bolts are used, four suitable flat washers are required).
1. Remove the enclosure door from the slip hinges.
2. Secure the enclosure to wall using the four ¼” pan head screws.
3. Reinstall the door and the enclosure base.
14”
14.5”
12.5”
16”
Four holes in backbox
for mounting.
Figure 33: APS-14127-00 Auxiliary Power Supply
To Next Page
Loading...
Need help?
General
