5-19
5.3.4 Motor not running
The motor can not run
Is MCCB On?
Can MCCB be turned On?
Are voltages between power
terminals correct?
Is LED lit?
Is the operation switch in UN? ?
Are there outputs between the U,V,
and W terminals of the motor?
Are outputs between U,V,W the
same?
1. Motor
2. Motor faults
3. Incorrect wiring
INVfault
INVfault
The operation switch is set to
“RUN” position
INVfault
1.The power is abnormal
2.Incorrect wiring
Short circuited wiring
NO
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
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