Mitsubishi GT14 User Manual page 277

(5) Grounding status
Servo
CN1A CN1B
CN2 CN3
Current status
FG
Panel grounding
Servo
CN1A CN1B
CN2 CN3
FG
Fig. A
Panel grounding
Grounding for
power system
Measure for
the FG cables
connected
Servo
CN1A CN1B
CN2 CN3
Fig. B
FG
PLC
Connection cable
FG
LG
a
FG
PLC
Connection cable
FG
LG
Terminal block
PLC
Connection cable
FG
LG
Panel grounding
The FG cables of the control
equipment (such as PLC) and the
power equipment (such as servo
GOT
amplifier) are connected as shown
by "a".
Panel grounding
GOT
FG
Terminal block
Panel
grounding
Perform independent grounding at
Grounding for
two places as shown in Fig. A.
power system
Independent grounding can reduce
the influence of noise.
If independent grounding is not
allowed, be sure to perform shared
grounding as shown in Fig. B.
GOT
FG
Panel grounding
18. TROUBLESHOOTING
18.1 GOT Restoration Sheet
17
Connected
18
Not
connected
Effective
Ineffective
18 - 7