Mitsubishi Electric GOT2000 Series Hardware User Manual page 327
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Also See for GOT2000 Series:
- Connection manual (1224 pages) ,
- User manual (654 pages) ,
- Basic training textbook (255 pages)
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■Countermeasure example 1
When any potential difference between the ground cable and the control panel having the GOT affects the GOT, also connect
the ground cable to the control panel.
When Countermeasure example 1-1 is difficult to be taken, such as the wiring is impossible, carry out wiring as shown in
Countermeasure example 1-2.
Measure example 1-1
Connection
cable
FG
LG
Ground wires
Use as short
Grounding to
and thick a wire
the panel
as possible.
If noise further affects the GOT by taking Countermeasure example 1, Countermeasure example 2 may reduce the influence
of noise.
■Countermeasure example 2
If the noise from the control panel having the GOT adversely affects the GOT even after Countermeasure example 1 is taken,
attach the ferrite core (KITAGAWA INDUSTRIES CO.,LTD. RFC-H13 or equivalent).
When attaching a ferrite core, insert the cable through the ferrite core several times (approximately three times).
When Countermeasure example 2-1 is difficult to be taken, such as the wiring is impossible, carry out wiring as shown in
Countermeasure example 2-2.
Measure example 2-1
Connection
cable
FG
LG
Ferrite core
Ground wires
Grounding to
Use as short
the panel
and thick a wire
as possible.
GOT
Ground wires
GOT
Ground wires
Measure example 1-2
Connection
cable
GOT
FG
LG
Grounding to
the panel
Measure example 2-2
Connection
cable
GOT
FG
LG
Ferrite core
Grounding to
the panel
8 WIRING OF POWER SUPPLY SECTION
8
325
8.3 Grounding
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Troubleshooting
