Inovance MD200 - Document Revision History

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6.3 Symptoms and Diagnostics
Fault Name Possible Causes Solutions
There is no display at
power-on.
The mains voltage is not input or too low. Check the power supply.
The AC Drive is damaged. Replace the AC drive.
is
displayed at power-on.
The cable between the drive board and
control board is in poor contact.
Re-connect the 4-pin cable and 28-pin cable.
The control board is damaged Replace the AC drive.
The motor or motor cable is short circuited
to ground.
Check whether short-circuit occurs on motor, motor cable or
contactor.
The mains voltage is too low. Check the power supply.
(IGBT overheat) is de-
tected frequently.
The setting of carrier frequency is too high. Reduce carrier frequency (F0-15).
The cooling fan is damaged, or ventilation
is clogged.
Replace the fan or clean the ventilation.
Components inside the AC drive are
damaged (thermistor or others).
Replace the AC drive.
The AC drive display is
normal upon power-on,
but after running the AC
drive displays
and
stops immediately.
The cooling fan is damaged or does not
rotate.
Replace the damaged fan.
The cable of the external control terminal is
short-circuited.
Eliminate the external short-circuit fault.
The motor does not
rotate after the AC drive
runs.
There is a motor or motor cable problem. Check that wiring between AC drive and motor is normal.
Related AC drive and motor parameters are
set incorrectly.
Restore the factory parameters and re-set the motor
parameters properly.
The drive board is faulty. Replace the AC drive.
The DI terminals are
disabled.
Related parameters are set incorrectly. Check and set parameters in group F4 again.
External signals are incorrect. Re-connect external signal cables.
The control board is damaged. Replace the AC drive.
The AC drive detects
overcurrent and
overvoltage frequently.
Motor parameters are set incorrectly. Set motor parameters or perform motor auto-tuning again.
The acceleration or deceleration time is too
short.
Set proper acceleration or deceleration time.
Load uctuates. Contact the agent or Inovance.