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(6) Grounding status of the panel on which the GOT is installed
Current
status
Fig.
A
Fig.
B
Measure
for the
ground
cable led
Fig.
C
Fig.
D
20
20.1 GOT Restoration Sheet
- 10
Connection
cable
Ground cable led from the
panel having the control
equipment
Connection
cable
FG
LG
Ground cable
Use a short and
Ground to
thick wire as
the panel.
possible.
Connection
cable
FG
LG
Ground cable
Ground to
the panel.
Connection
cable
FG
LG
Ground cable
Use a short and
Ground to
the panel.
thick wire as
possible.
Connection
cable
FG
LG
Ground cable
Ferrite core
Ground to
the panel.
A single ground cable is led from
GOT
the panel having the control
FG
LG
equipment such as PLC to the
panel having the GOT.
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
GOT
shown in Fig. B.
GOT
Attaching the ferrite core
(KITAGAWA INDUSTRIES
Ferrite core
CO.,LTD. RFC-H13 or
equivalent product) 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
GOT
shown in Fig. D.
Led
Not led
Effective
Ineffective
Effective
Ineffective
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