Inovance MD200 - Page 57

6 Troubleshooting
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Display Fault Name Possible Causes Solutions
Undervoltage
An instantaneous power failure occurs Reset the fault.
The AC drive's input voltage is not within the
permissible range.
Adjust the voltage to normal range.
The bus voltage is abnormal. Replace the AC drive.
The rectier bridge, the pre-charge resistor, the
drive board or the control board are abnormal.
Replace the AC drive.
Drive overload
The load is too heavy or locked-rotor occurs on
the motor.
Reduce the load or check motor and mechanical
conditions.
The rated AC drive power is low. Replace the drive by one with higher rated power.
Motor overload
F9-01 (Motor overload protection gain) is set
improperly.
Set F9-01 correctly.
The load is too heavy or locked-rotor occurs on
the motor.
Reduce the load or check motor and mechanical
conditions.
The rated AC drive power is low. Replace the drive by one with higher rated power.
Input phase loss
Three phase input is abnormal.
Eliminate faults in external circuitry.
Drive board is abnormal.
Lightning protection board is abnormal.
Contact the agent or Inovance.
Control board is abnormal.
Output phase loss
Motor winding is damaged.
Check resistance between motor cables.
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.
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 is abnormal. Replace the AC drive.
IGBT overheat
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.
The thermally sensitive resistor of IGBT is
damaged.
Replace the AC drive.
The AC drive IGBT is damaged. Replace the AC drive.
External equipment
fault
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.
Communication
fault
The host controller is in abnormal state. Check the cable of the host controller.
Communication cable is abnormal. Check the communication cables.
Communication parameters in group Fd are set
improperly.
Set communication parameters in group Fd
properly.
After all the preceding checkings are done but the fault still exists, restore the default settings.
Current detection
fault
The drive board is abnormal. Replace the AC drive.
EEPROM read-
write fault
EEPROM chip is damaged Replace the AC drive.
Short circuit to
ground
The motor is short circuited to the ground. Replace cable or motor.
The upper IGBT is damaged. Ask a professional
to check.
Replace the AC drive.