Chapter 6 Fault Code Information and Maintenance
6-3
Fault
Name
Fault Descriptions
Corrective Actions
Over-current during
acceleration
1.
Short-circuit at motor output: Check for
possible poor insulation at the output lines.
2.
Torque boost too high: Decrease the torque
compensation setting in Pr.07.02.
3.
Acceleration Time too short: Increase the
Acceleration Time.
4.
AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
Over-current during
deceleration
1.
Short-circuit at motor output: Check for
possible poor insulation at the output line.
2.
Deceleration Time too short: Increase the
Deceleration Time.
3.
AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
Over-current during
constant speed operation
1.
Short-circuit at motor output: Check for
possible poor insulation at the output line.
2.
Sudden increase in motor loading: Check for
possible motor stall.
3.
AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
External Fault
1. When
multi-function
input terminals (MI3-MI9)
are set to external fault, the AC motor drive
stops output U, V and W.
2.
Give RESET command after fault has been
cleared.
Internal EEPROM can not be
programmed.
Return to the factory.
Internal EEPROM can not be
programmed.
Return to the factory.
Internal EEPROM can not be
read.
1.
Press RESET key to set all parameters to
factory setting.
2.
Return to the factory.
Internal EEPROM can not be
read.
1.
Press RESET key to set all parameters to
factory setting.
2.
Return to the factory.
U-phase fault
Return to the factory.
V-phase fault
W-phase fault
OV or LV
Temperature sensor fault
