Mircom TX3 Series Installation Manual download pdf (Page 33)

Touch Screen System and Setup

Version 1.3 TX3 Touch Screen Installation Manual 33 (53)

All Touch Screen controller boards use the MD-990 for their power supply. The

door strike power supply depends on the door strike power requirements.

Note: Install the MD-990 outside the Touch Screen enclosure.

3.5.1 Maximum Power Supply Wire Distances

The distance from the Touch screen to the power supply is a function of the wire

gauge and the resistance generated by the cable by the power draw.

Do not exceed the maximum distances from the Touch screen to the power

supply as indicated in Table 1

Table 1: Maximum Power Supply Wire Distances

3.5.2 Wiring the External Power Supply

The power supply terminals are located at the bottom of the MD-990 external

power supply as shown in Figure 17.

Figure 17. MD-990 Terminal Block Wiring

To connect the power supply

1. Turn the power off from the Touch Screen Panel.

2. Ensure the MD-990 voltage selectable switch is set to 120V.

Gauge Distance

16 125 ft (38.1 m)

14 200 ft (60.96 m)

12 320 ft (97.536 m)

10 500 ft (152.4 m)

N+V-V-V +V

ADJ

Line Load

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 53 54

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Mircom TX3 Series Installation Manual Page 33