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19. LOADING AND INSTALLATION
(3) Grounding
(a) Carry out the independent grounding if possible.
(b) If independent grounding is impossible, carry out the shared grounding (2) as
shown below.
(c) Use the cable of 2mm
2
or more for grounding.
Set the grounding point closer to the PLC to make the grounding cable short as
possible.
(d) If any malfunction occurs due to grounding, disconnect either or both of the LG
and FG terminals of the base unit from the ground.
CAUTION
Always ground the FG and LG terminals to the protective ground conductor.
Failure to do so may cause an electric shock or malfunctions.
PLC
Other
equipment
PLC
Other
equipment
PLC
Other
equipment
(1) Independent grounding ... Best (2) Joint grounding ... Good (3) Joint grounding ... Not allowed
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