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(6) Grounding status of the panel on which the GOT is installed
Ground cable led from the
Current status
panel having the control
equipment
Fig. A
Fig. B
Measure for the
ground cable
led
Fig. C
Fig. D
18 - 8
18. TROUBLESHOOTING
18.1 GOT Restoration Sheet
Connection
cable
GOT
FG
Connection
cable
GOT
FG
Ground cable
Use a short and
Ground to
thick wire as
the panel.
possible.
Connection
cable
GOT
Ground cable
FG
Ground to
the panel.
Connection
cable
GOT
FG
Ground cable
Ground to
Use a short and
the panel.
thick wire as
possible.
Connection
cable
GOT
Ground cable
FG
Ferrite core
Ground to
the panel.
A single ground cable is led from the
panel having the control equipment
such as PLC to the panel having the
GOT.
Connecting the ground cable to the
panel having the GOT as shown in
Fig. A to reduce the potential
difference may prevent the
malfunction.
When wiring as shown in Fig. A is
difficult, perform wiring as shown in
Fig.B.
Ferrite core
Attaching the ferrite core to the ground
cable connected to the panel having
the GOT as shown in Fig. C reduces
the influence of noise.
When wiring as shown in Fig. C is
difficult, perform wiring as shown in
Fig. D.
Led
Not led
Effective
Ineffective
Effective
Ineffective
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