Mitsubishi GT16 User Manual page 173

(6) Grounding status of the panel on which the GOT is installed
Ground cable led from the
Current
panel having the control
equipment
status
Fig.
A
Ground cable
Use a short and
thick wire as
possible.
Fig.
Ground cable
B
Measure for
the ground
cable led
Fig.
C
Ground cable
Use a short and
thick wire as
possible.
Fig.
Ground cable
D
Connection
cable
GOT
FG
LG
Connection
cable
GOT
FG
LG
Ground to
the panel.
Connection
cable
GOT
FG
LG
Ground to
the panel.
Connection
cable
GOT
FG
LG
Ferrite core
Ground to
the panel.
Connection
cable
GOT
FG
LG
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.
Attaching the ferrite core
(KITAGAWA INDUSTRIES 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 shown in
Fig. D.
10.1 GOT Restoration Sheet
9
Led
10
Not led
Effective
Ineffective
Effective
Ineffective
10 - 9