Mitsubishi Electric GT16 User Manual page 395

(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.
FG
B
PLC
Connection cable
Connector
FG
LG
conversion box
a FG
LG
Panel
grounding
PLC
Connection cable
FG Connector
LG
conversion box
FG
LG
Terminal
Terminal block
block
Panel
grounding
PLC
Connection cable
FG
Connector
LG
conversion box
FG
Panel grounding
LG
Panel grounding
GOT
The FG cables of the control
equipment (such as PLC) and the
power equipment (such as servo
amplifier) are connected as shown by
"a".
GOT
Perform independent grounding at
Grounding for
power system
two places as shown in Fig. A.
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
19. TROUBLESHOOTING
19.1 GOT Restoration Sheet
17
Connected
18
Not
connected
19
Effective
Ineffective
19 - 7