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