Grounding - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Grounding

Perform the following.
• Perform class D grounding (Grounding resistance: 100  or less).
• Ground the PLC independently when possible.
If the PLC cannot be grounded independently, perform the "Common grounding" shown below.
For the details, refer to the following manual.
MELSEC iQ-F FX5U User's Manual (Hardware)
Other
PLC
equipment
Independent grounding
(Best condition)
• Use a grounding wire with thickness of AWG 14 (2 mm
• Locate the ground point as close to the PLC as possible to minimize the length of the grounding wire.
Other
PLC
equipment
Shared grounding Common grounding
(Good condition)
2
) or thicker.
Other
PLC
equipment
(Not allowed)
4 FX5U CPU MODULE BUILT-IN ANALOG
4
163
4.6 Wiring