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(1) When motor does not rotate. | Note : Verify the function settings for the operation com- |
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| panel. |
Remedy failed function
and start after reset- ting alarm.
Yes
Motor does not start.
Does charge lamp No light?
Yes
Alarm displayed on keypad panel?
Are circuit breaker and |
| Investigate cause of | ||
magnetic contactor on |
| failed switching, and | ||
power supply side | No | turn them ON if there is | ||
switched ON? | no problem. | |||
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| Yes |
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Voltage of main power | No | Check for failures such | ||
supply input terminals | as low voltage, phase | |||
normal? |
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| failure, loose connec- | |
If no error is de- tected, continue op- eration.
Yes
Does motor run if RUN key is pressed?
No
No
Is the operation method the keypad panel or input sig- nal?
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| No | |
Forward or reverse | |||||||
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| Yes |
| and remedy accord- | |
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| Possibly of faulty In- | |
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| verter Contact GE Fuji. | |
External wiring be- |
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tween control circuit |
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terminals FWD, REV - | Yes |
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Replace faulty switch | ||||
CM connected cor- |
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Yes | Yes |
Press UP key and set |
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frequency. |
| Does frequency set- | ||
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| ting exceed starting | ||
Yes | ||||
and stop frequency. No | ||||
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rectly? |
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| or relay. |
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| No | ||
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| Remedy wiring error. |
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Does drive start |
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when UP key |
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No |
| Yes |
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pressed? |
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Execute correct fre- |
| Yes | Are the frequency | |||
quency setting. |
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| limiter (High) and | ||
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| the frequency setting | ||
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| lower than starting | ||
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| frequency? |
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Setting of built
Yes
Replace faulty fre- quency setting POT (VR), signal converter, switch, or relay contacts as appropriate.
Defective motor.
No
Drive output termi-
No
Probable faulty drive.
No
Load excessive?
Yes
Setting of torque boost amount cor- rect?
Yes
Yes
nals (U,V,W) sup- plied with proper voltage?
Yes
Motor wiring cor- rect?
Contact GE Fuji.
No
Remedy wiring error.
No
Raise torque boost amount.
Load is excessive, resulting in motor lock. Lighten load. Also, check that the brake is 
adequately released if mechanical brake is
used.
