Mitsubishi Electric GOT2000 Series User Manual page 281

• Remedy 1 (Refer to the figures Remedy 1-1 and 1-2 below.)
If the electric potential difference between the ground cable and the panel that houses the GOT is creating problems,
connect the ground cable to the panel also.
If the wiring method as shown in Remedy 1-1 is not feasible, follow Remedy 1-2.
Connector
conversion box
Connection cable
Ground cable from
the panel that houses
control equipment
FG
Use the thickest
cable possible.
Panel grounding
Remedy1-1
If taking Remedy 1 worsens noise interference, taking Remedy 2 may alleviate it.
• Remedy 2 (Refer to the figures Remedy 2-1 and 2-2 below.)
Attach a ferrite core to the cable if noise from the GOT panel has adverse effects on the GOT when Remedy 1 is
taken.
Wind the wire around the ferrite core several times (approx. 3 times), if a ferrite core is used.
If the wiring method as shown in Remedy 2-1 is not feasible, follow Remedy 2-2.
Connector
conversion box
Connection cable
Ground cable from
the panel that houses
FG
control equipment
Ferrite core
Use the thickest
cable possible.
Panel grounding
Remedy2-1
Connector
conversion box
Connection cable
Ground cable from
the panel that houses
control equipment
Use the thickest
cable possible.
Panel grounding
Remedy1-2
Connector
conversion box
Connection cable
Ground cable from
the panel that houses
control equipment
Use the thickest
cable possible.
Panel grounding
Remedy2-2
9.2 Power Wiring
FG
FG
Ferrite
core
9 - 7
9