Construction Mode
2-14 Manual # 42-02-7223
Equipment Grounding
For good grounding, quality materials and methods must be used. Grounding must conform to
all applicable codes. Proper grounding is essential to safety and reduces noise-induced prob-
lems:
•Provide equipment grounding in accordance with NEC Article 250 and/or the local electri-
cal code, as applicable.
• The grounding wire between equipment cabinets may follow a branching or daisy-chain
configuration but the wire must terminate at the last controller and NOT loop back.
• You must provide a direct, solid ground to the controller and motor. An indirect ground,
such as the building structure or a water pipe, may not provide proper grounding and
could act as an antenna — radiating RFI noise and interfering with electronic equipment
in the building.
• The conduit containing the AC power feeders must not be used for grounding.
Figure 2.5 Controller Cabinet Ground Wiring
ACCEPTABLE
ACCEPTABLE
NOT ACCEPTABLE
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