Grounding - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

Grounding

Observe the following:
• Provide independent grounding when possible. Ground the FG and LG terminals to the protective ground conductor
dedicated to the programmable controller (ground resistance: 100 ohms or less).
• If independent grounding cannot be provided, employ (2) Shared grounding shown below.
(1)
Programmable
Equipment
controller
Ground
resistance of
100Ω or less
(1) Independent grounding: Recommended
(2) Shared grounding: Allowed
(3) Common grounding: Not allowed
• Use the thickest cable (maximum of 2). Bring the grounding point close to the programmable controller as much as
possible so that the ground cable can be shortened.
(2)
Programmable
Equipment
controller
Ground
resistance of
100Ω or less
(3)
Programmable
Equipment
controller
5 INSTALLATION AND WIRING
5
131
5.7 Wiring