Rockwell Automation 1790D-NOV2/TNOV2 CompactBlock LDX Analog Modules - Manual (Page 30)

Publication 1790-UM001A-EN-P - March 2002
2-14 Installation and Wiring
To wire your module follow these steps.
1. At each end of the cable, strip some casing to expose the
individual wires.
2. Trim the signal wires to 2-inch lengths. Strip about 3/16 inch (5
mm) of insulation away to expose the end of the wire.
3. At one end of the cable, twist the drain wire and foil shield
together.
Under normal conditions, this drain wire and shield junction
must be connected to earth ground, via a panel or DIN rail
mounting screw at the analog I/O module end. Keep the length
of the drain wire as short as possible.
In environments where high frequency noise may be present, it
may be necessary to ground the cable shields to earth at the
module and via a 0.1µF capacitor at the sensor end for analog
inputs and at the load end for analog outputs.
4. At the other end of the cable, cut the drain wire and foil shield
back to the cable.
5. Connect the signal wires to the terminal block as shown in
analog input wiring on page 2-15 and page 2-16 and analog
output wiring on page 2-17 and page 2-18.
6. Connect the other end of the cable to the analog input or output
device.
7. Repeat steps 1 through 5 for each channel on the module.
ATTENTION
!
Be careful when stripping wires. Wire fragments that
fall into a module could cause damage at power up.