Altronix AL175ULB Installation Instructions - Manual (Page 3)

LED Diagnostics:
Red (DC) Green (AC) Power Supply Status
ON ON Normal operating condition.
ON OFF Battery backup is powering output.
OFF ON No DC output.
OFF OFF Loss of AC. Discharged or missing stand-by battery. No DC output.
Terminal Identification:
Terminal Legend Function/Description
AC
Low voltage AC input.
TRG1 & TRG2
These input terminals are designed to connect to the normally closed
outputs of an access control or fire alarm relay. These terminals control [LOCK+],
and [STRIKE+], as well as AL175ULB output relay contacts [N.C., N.O., C]
LOCK +
This terminal provides DC output voltage when [TRG1] and [TRG2] are shorted
together and are typically used to power Mag Locks.
STRIKE+
This terminal provides DC output voltage when [TRG1] and [TRG2] are unshorted
and are typically used to power Electric Strikes.
N.C., N.O., C
Isolated dry Form “C” contacts. Shorting [TRG1] and [TRG2] together causes
these contacts to switch. They are typically used for controlling multiple
AL175ULBs with fire alarm tie-in (Fig. 4 and Fig. 5, pg. 4).
AUX+ Continuous positive (+) DC power output voltage. It is not affected by TRG1, TRG2 operation.
COM -- Common negative (-) output (ground).
FACP Spare wiring terminal used for fire alarm tie-in application (Fig. 3, pg. 4).
+ BAT -- Stand-by battery connections.
AC Fail
N.C., C, N.O. Used to notify loss of AC e.g connect audible device or alarm panel relay normally energized
when AC power is present. Contact rating 1 amp @ 28VDC.
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