Mitsubishi Electric GOT SIMPLE Series Operation Manual page 115

Grounding status of the control panel having the GOT
■Current status
Check if a single ground cable is led from the control panel having the control equipment such as a PLC to the control panel
having the GOT.
Connection
cable
Ground cable led from
FG
the panel having the
control equipment
■Measure when a single ground cable is led
• Measure 1
A malfunction may be prevented by connecting the ground cable to the control panel having the GOT as shown in Figure A to
reduce the potential difference.
If wiring as shown in Figure A is unavailable, perform wiring as shown in Figure B.
Figure A
Connection
cable
GOT
FG
Ground wires
Use as short and
Grounding to
thick a wire as
the panel
possible.
• Measure 2
By attaching a ferrite core (KITAGAWA INDUSTRIES CO.,LTD. RFC-H13 or equivalent) to the ground cable connected to the
control panel having the GOT as shown in Figure C, the influence of noise is reduced.
If wiring as shown in Figure C is unavailable, perform wiring as shown in Figure D.
Figure C
Connection
cable
GOT
FG
Ferrite core
Ground wires
Use as short Grounding to
the panel
and thick a wire
as possible.
Check result
□ Applicable
□ Not applicable
GOT
Figure B
Ground wires
Figure D
Ground wires
Connection
cable
GOT
FG
Grounding to
the panel
Connection
cable
GOT
FG
Ferrite core
Grounding to
the panel
11.1 GOT Restoration Sheets
Effect
□ Effective
□ Ineffective
Effect
□ Effective
□ Ineffective
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