XMTC User’s Manual 15
Chapter 2. Installation
2.4.4 Wiring the Signal Connections (cont.)
Use the following steps to make the proper wiring connections:
1. Install the selected cable entry device, such as conduit or seal-off, in accordance with the manufacturer’s
instructions.
Note: If installation of the cable entry device is only partially complete, GE recommends tagging the device to ensure
the safety of subsequent users.
2. Route the cable into the XMTC.
3. Unplug the TB1 and TB2 connectors by pulling them straight off the PCB, and loosen the screws on the sides
of the connectors.
4. Connect the power leads:
a. Insert the 4-wire cable +24 VDC line (red) lead into pin TB1-1 and tighten the screw.
b. Insert the 4-wire cable 24 VDC return (black) lead into pin TB1-2 and tighten the screw.
5. Connect the analog output leads:
a. Insert the 4-wire cable + 4-20 mA (white) lead into pin TB1-3 and tighten the screw.
b. Insert the 4-wire cable – 4-20 mA (green) lead into pin TB1-4 and tighten the screw.
IMPORTANT: You can use either an RS232 serial port (discussed in Step 6) or an RS485 serial port (discussed in Step 7),
but not both.
6. Connect the RS232 serial port leads:
a. Insert the 3-wire cable RX (red) lead into pin TB2-1 and tighten the screw.
b. Insert the 3-wire cable TX (white) lead into pin TB2-2 and tighten the screw.
c. Insert the 3-wire cable GND (green) lead into pin TB2-3 and tighten the screw.
WARNING! Cable entries of an approved explosion-proof design are required. These must be
installed according to the manufacturer’s instructions. The choice of cable entry device may limit
the overall installation category achieved.
CAUTION! Connecting the +24 VDC line (red) lead to any terminal except TB1-1 will damage
the XMTC.
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