34
(3) Grounding
CAUTION
Be sure to ground the FG terminals and LG terminals to
the protective ground conductor. Not doing so could result
in electric shock or erroneous operation.
(a) Carry out the independent grounding if possible. (Grounding resistance
100
or less.)
(b) If the independent grounding is impossible, carry out the shared
grounding (2) as shown below.
Programmable
controller
Other
device
Programmable
controller
Programmable
controller
Class 3
grounding
(1) Independent grounding.....Best (2) Shared grounding.....Good (3) Common grounding.....Not allowed
Other
device
Other
device
Class 3
grounding
(c) Use the cable of 2mm
2
or more for grounding.
Set the grounding point closer to the programmable controller to make
the grounding cable short as possible.
(d) If a malfunction occurs due to earthling, separate either LG or FG of the
base module, the device combination, or all the connection from the
earthling.
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