18
SLC 500 Thermocouple/mV Analog Input Module
Publication 1746-5.23
Preparing and Wiring the Cables
To prepare and connect cable leads and drain wires, follow these steps:
1. At each end of the cable, strip some casing to expose individual wires.
2. Trim signal wires to 5-inch lengths beyond the cable casing. Strip about
4.76 mm (0.1875 in.) of insulation to expose the ends of the wires.
3. At the module-end of the cables:
• extract the drain wire and signal wires
• remove the foil shield
• bundle the input cables with a cable strap
4. Connect the following pairs of drain wires together.
• Channels 0 and 1
• Channels 2 and 3
• Channels 4 and 5
• Channels 6 and 7
Keep drain wires as short as possible.
5. Connect the drain wires to the shield inputs of the terminal block if
appropriate for thermocouple used. See “Wiring Guidelines” on page 14 for
more information.
• Channel 0 and 1 drain wires to pin 5
• Channel 2 and 3 drain wires to pin 10
• Channel 4 and 5 drain wires to pin 15
• Channel 6 and 7 drain wires to pin 20
(Remove foil shield
and drain wire from
sensor-end of the
cable.)
Cable
Drain Wire
Signal Wires
Signal Wires
