Chapter 5 Troubleshooting 
5.11 Motor Stalls during Acceleration
Motor stalls during acceleration
Thicken or shorten the wiring between the motor and AC motor drive
Reduce load or increase the capacity of AC motor drive
| Check if acceleration | Yes | |||
| time is too short |
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Check if the inertia | Yes | ||||
of the motor and load |
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is too high |
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Yes |
| Check for low voltage | |||
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Yes | Check if the load torque | ||||
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Increase setting time
Yes
Use special motor?
No
Reduce load or increase the capacity of AC motor drive
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| Maybe AC motor drive has | |
Check if the torque |
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Yes |
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compensation is suitable |
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| due to noise. Please contact | |
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| DELTA |
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Increase torque compensation |
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5.12 The Motor does not Run as Expected
Motor does not run |
| Check Pr. | No |
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as expected |
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| Yes |
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| Please use specific motor | ||||||
| Run in low speed continuously |
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| Yes |
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| Is load too large |
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| Reduce load or increase the |
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| capacity of AC motor drive |
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| Check if output voltage of U, V, W |
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No
Maybe AC motor drive has malfunction or misoperation due to noise. Please contact DELTA.
Revision July 2008, EG03, SW V1.06 |
