Grounding - Mitsubishi Electric FX5UC-96MT/D User Manual

6.3

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 "Shared grounding" shown below.
Other
PLC
equipment
Independent grounding
(Best condition)
PLC extension devices (excluding communication adapters)
PLC
Expansion CPU
adapter
module
(grounding resistance: 100  or less)
• Bring the grounding point close to the PLC as much as possible so that the ground cable can be shortened.
Other
PLC
equipment
Shared grounding
(Good condition)
Extension Other
module equipment
Independent grounding
class D grounding
Other
PLC
equipment
Common grounding
(Not allowed)
6
6 WIRING
95
6.3 Grounding