Electrical Design Guide
‑38‑
Table 2–13 Description for grounding of multiple drives installed side by side
No.
Description
①
Connect the motor output cable shield to the output PE terminal of the
servo drive.
②
Connect the main circuit input PE terminal of the servo drive to the
grounding copper busbar of the control cabinet through a protective
grounding conductor.
③
Connect the PE cable on the input power supply side to the grounding
copper busbar of the control cabinet.
④
Connect the grounding copper busbar of the control cabinet to the
metal enclosure of the control cabinet through the protective
grounding conductor.
Grounding the control cabinet system
The most cost‑effective method of suppressing interference in a control cabinet is to
isolate the interference source from devices that may be interfered with. Divide the
control cabinet into multiple EMC compartments or use multiple control cabinets
based on the intensity of interference sources, and install each device in accordance
with the following wiring principles.
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