Grounding - Mitsubishi Electric MELSEC-L SSCNETIII/H User Manual

6.5.2

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.
• If independent grounding cannot be provided, employ (2) Shared grounding shown below.
Programmable
controller
(1) Independent grounding
• Use thick cables up to 2. Bring the grounding point close to the programmable controller as much as
possible so that the ground cable can be shortened.
48
Programmable
Another
controller
equipment
Grounding
Best (2) Common grounding
Programmable
Another
controller
equipment
Grounding
Good (3) Joint grounding
Another
equipment
Not allowed