Delta Electronics AC Motor Drive VFD-VE Series - Manual (Page 223)

Chapter 5 Troubleshooting|
5-8 Revision August 2008, 03VE, SW V2.04
5.11 Motor Stalls during Acceleration
Motor stalls during
acceleration Check if acceleration
time is too short Yes
Yes
Yes
Yes
No
No
No
No
No
No
Increase setting time
Yes
Use special motor?
Reduce load or
increase the capacity
of AC motor drive
Check if the inertia
of motor and load
are very high
Check if the voltage of
terminal is lower than
before
Check if the load torque
is too high
Yes
Maybe AC motor drive has
malfunction or misoperation
due to noise. Please contact
DELTA
Increase torque compensation
Check if the torque
compensation is suitable
Thicken or shorten the
wiring between the
motor or AC motor drive
Reduce load or
increase the capacity
of AC motor drive
5.12 The Motor does not Run as Expected
Check if V/f characteristic
and torque compensation
is suitable
No
Yes
Yes
Yes
Yes
No
No
No
Adjust
and lower torque compensation
V/f characteristic
Run in low speed continuously
If load is too large
Please use specific motor
Reduce load or increase the
capacity of AC motor drive
Check if output voltage of U, V W
is balanced
Motor has malfunction
Maybe AC motor drive has malfunction or misoperation
due to noise. Please contact DELTA.
Motor does not run
as expected