Motor Stalls During Acceleration - Delta Electronics VFD-M Series User Manual

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
5.12 The Motor does not Run as Expected
Motor does not run
as expected
Maybe AC motor drive has malfunction or misoperation
due to noise. Please contact DELTA.
5-8
Check if acceleration
time is too short
Check if the inertia
of the motor and load
is too high
Check for low voltage
Yes
at input
Yes
Check if the load torque
is too high
Check if the torque
compensation is suitable
Increase torque compensation
Check Pr. 04 to Pr. 09
and torque compensation
settings
Yes
Run in low speed continuously
No
Is load too large
No
Check if output voltage of U, V, W
is balanced
No
Yes
Increase setting time
No
Yes
No
No
No
Yes
No
No
Adjust Pr.04 to Pr.09
and lower torque compensation
Yes
Please use specific motor
Yes
Reduce load or increase the
capacity of AC motor drive
Yes
Yes
Use special motor?
No
Reduce load or
increase the capacity
of AC motor drive
Maybe AC motor drive has
malfunction or misoperation
due to noise. Please contact
DELTA
Motor has malfunction
Revision May 2008, ME14, SW V3.04