Motor Stalls During Acceleration; The Motor Does Not Run As Expected - Delta VFD-VL Series User Manual

Call 1(800)985-6929 for Sales
Chapter 5 Troubleshooting|

5.11 Motor Stalls during Acceleration

Motor stalls during
acceleration
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

Motor does not run
as expected
Maybe AC motor drive has malfunction or misoperation
due to noise. Please contact DELTA.
Call 1(800)985-6929 for Sales
deltaacdrives.com
VFD-VL
Check if acceleration
time is too short
Check if the inertia
of motor and load
are very high
Check if the voltage of
Yes
terminal is lower than
before
Yes
Check if the load torque
is too high
Check if the torque
compensation is suitable
Increase torque compensation
Check if V/f characteristic
and torque compensation
is suitable
Yes
Run in low speed continuously
No
If load is too large
No
Check if output voltage of U, V W
is balanced
No
deltaacdrives.com
sales@deltaacdrives.com
Yes
Increase setting time
No
Yes
Use special motor?
No
Reduce load or
increase the capacity
of AC motor drive
No
No
Maybe AC motor drive has
Yes malfunction or misoperation
due to noise. Please contact
DELTA
No
No
Adjust
and lower torque compensation
Yes
Please use specific motor
Yes
Reduce load or increase the
capacity of AC motor drive
Yes
5-8
sales@deltaacdrives.com
Yes
No
V/f characteristic
Motor has malfunction