AMX AXM-CP, Instruction Manual, Page: 22 / 156

14 Installing the Touch Panel Color Passive-Matrix LCD Touch Panels
Guidelines
The touch panels require 12 VDC power to operate properly. The AXCESS Control
System supplies power via the AXlink cable or external 12 VDC power supply. The
maximum wiring distance between the control system and touch panel is
determined by power consumption, supplied voltage, and the wire gauge used for
the cable. Figure 13 lists wire sizes and the maximum lengths allowable between the
touch panel and control system. The maximum wiring lengths for using AXlink
power are based on a minimum of 13.5 volts available at the control system’s power
supply.
Wiring guidelines
Wire Size Maximum Wiring
Length
18 AWG 213 feet
20 AWG 135 feet
22 AWG 84 feet
24 AWG 53 feet
If you install the touch panel farther away from the control system than
recommended in Figure 13, connect an external 12 VDC power supply to the two-
pin PWR connector on the touch panel.
Preparing captive wires
You will need a wire stripper, soldering iron, and flat-blade screwdriver to prepare
and connect the captive wires.
1.
Strip 0.25 inch of wire insulation off all wires and apply a light coat of solder to
the ends using a soldering iron.
2.
Insert each wire into the appropriate opening on the connector according to the
wiring diagrams and connector types described in this section.
3.
Turn the flat-blade screws clockwise to secure the wire in the connector.
Caution
Do not connect power to the
touch panel until the wiring is
complete. If you are using a 12
VDC power supply, apply
power to the touch panel only
after installation is complete.
Figure 13
Wiring guidelines
Caution
Do not over-torque the screw.
Doing so can bend the seating
pin and damage the connector.