Rockwell Automation 1771-OFE Analog Output Module Installation Instructions - Manual (Page 11)

Analog Output Module 11
Publication 1771-IN044C-EN-P - October 2002
Ground the Chassis and Module
Use the following diagrams to ground your
I/O chassis and analog input module. Follow
these steps to prepare the cable:
Refer to Wiring and Grounding Guidelines,
publication 1770-4.1 for additional
information.
Remove a length of cable
jacket from the Belden 8761 cable.
Pull the foil shield and bare
drain wire from the insulated wires.
Bare drain
wire
Insulated
wires
Foil
shield
Twist the foil shield and drain
wire together to form a single strand.
Attach a ground lug.
Belden 8761 Cable
2
When using shielded cable wire, ground the foil shield
and drain wire only at one end of the cable. We recomĆ
mend that you wrap the foil shield and drain wire toĆ
gether and connect them to a chassis mounting bolt.
At the opposite end of the cable, tape exposed shield
and drain wire with electrical tape to insulate it from
electrical contact.
1
3
4
ExternalĆtooth
Washers
#10 ThreadĆforming screw
Shield and Drain
twisted together
SingleĆpoint Grounding
Extend shield to termination point.
Expose just enough cable to adequately
terminate inner conductors.
Use heat shrink tubing
or other suitable insulaĆ
tion where wire exits
cable jacket.
Grounding Stud
1 Use the cup washer if crimpĆon lugs are not used.
Chassis Ground
When you connect grounding conductors to the I/O chassis
grounding stud, place a star washer under the first lug, then
place a nut with captive lock washer on top of each ground lug.
Torque the nut with captive washer to 18(+3) pound-inches.
Ground Lug
Ground Lug 1
Star
Washer
I/O Chassis
Side Plate
Nut and Captive
Washer
Shield and Drain
twisted together
Nut