Mitsubishi Electric GOT1000 General Description Manual page 61

(2) Shared grounding (Good)
Power equipment
(servo, etc.)
CN1A CN 1B
FG
LG
CN2C N3
FG
Panel
grounding
Use a short and thick cable as much as possible.
* Ground the system at one end.
To prevent noise from entering the GOT, use a short and thick wire
for grounding between the ground and the panel to ensure lower
ground resistance.
(3) Common grounding (Not allowed)
Power equipment
(servo, etc.)
CN1A CN1B
FG
LG
CN2 CN3
FG
The power equipment and
control equipment are
connected with a wire.
Panel
grounding
* Do not connect the ground cables of the power equipment and
control equipment with a wire.
If the cables are connected, noise from the power equipment may
influence the control equipment, causing malfunction.
PLC
Connection cable
Connection cable
46
GOT
FG
LG
Panel
grounding
FG
GOT
LG
Panel grounding