Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions - Manual (Page 25)

Rockwell Automation Publication 1756-IN005C-EN-P - March 2014 25
Install Chassis and Power Supplies Chapter 1
Connect the Protective Earth Ground
Use 2.1 mm2 (14 AWG) solid or stranded-copper wire rated at 90 °C (194 °F) or
greater to connect the protective earth ground. Tighten the nuts on the
protective earth ground terminal stud to a torque of 16.27 N•m (12 lb•in).
Connect the functional earth ground as shown in Figure 13 .
Figure 13 - Protective Earth Ground Connection
+
-
+
-
45802
5
3
4
1
3
2
3
To Ground Bus
IMPORTANT Some chassis can have a second protective earth-ground terminal stud. If your
application requires the use of a second protective earth-ground terminal stud,
please use the additional protective earth-ground terminal stud to connect the
chassis to the ground bus.
Item Description
1 Protective earth-ground terminal stud
2 Star washer
3 Equipment grounding conductor (ground lug with 2.1 mm² [14 AWG] solid or stranded-copper wire rated
at 90 °C [194 °F] or greater)
4 Nut with captive star washer
5 Wiring terminal block (bottom terminal is protective earth ground)