88 TX3 Touch Screen Installation Manual
Touch Screen System and Setup
3.8 Connecting to the External Power Supply
The power supply terminal block is shown in Figures 65, 68, and 71. It receives
24 VDC from the external TX3-PS24-5A power supply.
The external TX3-PS24-5A power supply connects to the building power AC
power supply. A voltage selectable switch is located on the side of the unit and is
factory set to 115 V. See the included document (LT-1094) for instructions on
how to change the voltage.
For best operation install the external power supply into its own dedicated
electrical outlet to protect it from excessive power surges and current
fluctuations.
All Touch Screen controller boards use the TX3-PS24-5A for their power
supply. The door strike power supply depends on the door strike power
requirements.
Note: Install the power supply indoors and outside of the Touch
Screen enclosure.
3.8.1 Wiring the External Power Supply
The power supply terminals are located at the bottom of the TX3-PS24-5A
external power supply as shown in Figure 78.
Figure 78. TX3-PS24-5A terminal block wiring
To connect the power supply
1. Turn the power off from the Touch Screen Panel.
To building
power
To TX3 Touch
{
{
Line Load
LN
−V −V +V +V
+V
ADJ
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