Inovance MD500 Series - Page 302

11. Troubleshooting
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Operating Panel Display Fault Name
Input phase loss
Cause Possible Solution
Input phase loss occurs. Eliminate faults in external circuitry.
Drive board, lightning protection
board, control board, or rectier
bridge is abnormal.
Contact the agent or Inovance.
Operating Panel Display Fault Name
Output phase loss
Cause Possible Solution
Motor winding is damaged. Check resistance between motor wires.
Replace motor is winding is damaged.
The cable connecting the AC drive
and the motor is abnormal.
Check for wiring errors and ensure the output cable is
connected properly.
Correct wiring.
The AC drive's three-phase outputs
are unbalanced when the motor is
running.
Check whether the motor three-phase winding is normal.
The drive board or the IGBT module
is abnormal.
Contact the agent or Inovance.
Operating Panel Display Fault Name
IGBT overheat
Cause Possible Solution
The ambient temperature is too high. Lower the ambient temperature.
The ventilation is clogged. Clean the ventilation.
The fan is damaged. Replace the cooling fan.
Thermally sensitive resistor of IGBT
is damaged.
Replace the damaged thermally sensitive resistor.
The inverter IGBT is damaged. Replace the inverter IGBT.
Operating Panel Display Fault Name
External fault
Cause Possible Solution
External fault signal is input via DI. Conrm that the mechanical condition allows restart (F8-18)
and reset the operation.
External fault signal is input via
virtual I/O.
Conrm that the virtual I/O parameters in group A1 are set
correctly and reset the operation.