6 Troubleshooting
- 45 -
Output phase to phase or phase to ground short-circuit?
auto tuning succeeds
？
acceleration time is too short
？
Fix the wrong wirings
Conduct auto tuning
Increase the time
Overcurrent during acceleration
Yes
No
Yes
VF control, check if torque boost or V/F curve is set properly
Adjust torque boost or
V/F curve
No
No
N
o
Yes
V/F control
power supply is abnormal
？
Restarted the motor before it stopped?
Adjust the power supply
Restart motor until it
stops
Yes
Yes
No
No
Shock load during acceleration?
Remove shock load
Yes
Use a higher rating drive
No
Yes
