Grounding - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

5.4
Observe the following:
• Provide grounding with a ground resistance of 100 or less.
• Provide independent grounding when possible.
• If independent grounding cannot be provided, provide "shared grounding" as shown below.
Independent grounding (Best condition)
Extension
adapter
Shared grounding (Good condition)
Extension
adapter
Shared grounding
Ground resistance of 100 ohms or less
(Grounding resistance: 100 Ω or less)
Common grounding (Not allowed)
Extension
adapter
• Limit the distance between the grounding point and the programmable controller as much as possible and keep the
grounding wire short.
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Grounding

Extension
CPU module
board
Independent grounding
Ground resistance of 100 ohms or less
(Grounding resistance: 100 Ω or less)
Extension
CPU module
board
Extension
CPU module
board
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Simple Motion
Expansion
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Motion module
Simple Motion
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Motion module
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Motion module
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5 WIRING
5.4 Grounding
5
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