6 Troubleshooting
- 54 -
Output phase to phase or phase to ground short-circuit?
auto tuning succeeds
?
Acceleration/deceleration time too short?
Fix the wirings
Conduct auto tuning
Increase the time
Overcurrent multi prevention fault
Yes
No
Yes
Input voltage too low?
Adjust the power supply
Yes
No
No
No
VF control
Shock load during running?
braking resistor installed?
Remove shock load
Install braking resistor
Yes
No
Seek for support
Yes
No
Load can be reduced?
Reduce the load
Yes
No
A higher rating drive helps?
No
Use a higher rating drive
Yes