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3.3.3
Power Supply
3.3.4
ON/OFF Switch and Battery Back-up
38 (61)
LT-980
The power supply connection is situated at the bottom right of the main controller
board and receives 16 Vac, 40 VA. Use 18 AWG wiring. An external PS-4 or PS-
4P plug-in transformer connects to the power terminals. Refer to Figure 5 and
Figure 10.
ON/OFF Switch
Figure 10. Power Supply
Battery back-up is provided with a 12V 6.5AH battery which fits inside and at the
bottom of the unit. Connect the battery to the connectors located to the left of the
ON/OFF switch SW1 as shown in Figure 11.
P6 - P5 +
Note:
Battery backup is optional.
Figure 11.
Controller Board Battery Wiring
TX3-CX Card Access System Installation and Operation Manual
Copyright 2015
OFF
ON
SW1
16 Vac IN
18 AWG
16 Vac transformer
(PS-4 or PS-4P)
Installation and Setup
16 Vac
120 Vac
Version 2.2
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