Mitsubishi Electric GOT2000 Series User Manual page 230

Graphic operation terminal
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(2) Measure for the equipment without a surge suppressor
Attaching a surge suppressor close to the load reduces the influence of surge on the GOT.
PLC
Output
■5. Installation status
(1) Current status
Check if the FG cables of the control equipment (such as a PLC) and the power equipment (such as a servo
amplifier) are connected as shown in "a" of the following figure.
PLC
Servo amplifier
CN1A
CN1B
FG
LG
CN2
CN3
FG
a
Panel grounding
(2) Measure when a single ground cable is led
Perform independent grounding at two places as shown in Figure A.
The independent grounding reduces the influence of noise.
When independent grounding is unavailable, perform shared grounding as shown in Figure B.
Figure A
Servo amplifier
CN1A
CN1B
FG
LG
CN2
CN3
FG
Panel grounding
Grounding for power system
Figure B
Servo amplifier
CN1A
CN1B
FG
LG
CN2
CN3
FG
Panel grounding
10 - 10
10.1 GOT Restoration Sheets
C
R
AC
The surge suppressor must
be attached close to the load.
Connection cable
FG
GOT
LG
Panel grounding
PLC
Connection cable
FG
LG
Terminal
block
Terminal block
Grounding for
control system
Panel grounding
Grounding for power system
PLC
Connection cable
FG
LG
Panel grounding
L
L
o
□ Effective
a
□ Ineffective
d
□ Applicable
□ Not applicable
GOT
□ Effective
□ Ineffective
GOT

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