6 WIRING
6.3 Grounding
85
6
6.3
Grounding
Perform the following.
• Perform class D grounding (Grounding resistance: 100
Ω
or less).
• Ground the PLC independently when possible.
• If the PLC cannot be grounded independently, perform the "Shared grounding" shown below.
PLC extension devices (excluding expansion boards and communication adapters)
• Use a grounding wire with thickness of AWG 14 (2 mm
2
) or thicker.
• Bring the grounding point close to the PLC as much as possible so that the ground cable can be shortened.
PLC
PLC
PLC
Other
equipment
Other
equipment
Other
equipment
Independent grounding
(Best condition)
Shared grounding
(Good condition)
Common grounding
(Not allowed)
PLC
Intelligent
module
Independent grounding
class D grounding (grounding resistance: 100
or less)
Expansion
adapter
Expansion
board
CPU
module
Extension
module
Other
equipment
Содержание MELSEC iQ-F Series
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