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7-1 Fault alarm and Solutions
When the inverter fails during operation, the inverter will immediately protect the motor from output,
and the inverter fault relay contact will act and display the fault code on the inverter display panel. Before
seeking service, users can perform self-checking according to the tips in this section to analyze the cause of
the fault. If the fault cannot be solved, please seek technical support from our company or product agent.
Fault name
display
Inverter
unit
Err01
protection
Overcurrent
during
Err02
acceleration
Overcurrent
during
Err03
deceleration
Chapter 7 Faults and Solutions
Chapter 7 Faults and Solutions
Troubleshoot the cause
1: The output circuit is grounded or
short circuited.
2: The connecting cable of the
motor is too long.
3: The IGBT overheats.
4: The internal connections become
loose.
5: The main control board is faulty.
6: The driver board is faulty.
7: The AC drive IGBT is faulty.
1: The output circuit is grounded or
short circuited.
2:
Motor
auto-tuning
performed.
3: The acceleration time is too
short.
4: Manual torque boost or V/F
curve is not appropriate.
5: The voltage is too low.
6:
The
startup
performed on the rotating motor.
7: A sudden load is added during
acceleration.
8: The inverter model is of too
small power class.
1: The output circuit is grounded or
short circuited.
2:
Motor
auto-tuning
performed.
3: The deceleration time is too
short.
4: The voltage is too low.
5: A sudden load is added during
1: Eliminate external faults.
2: Install a reactor or an output filter.
3: Check the air filter and the cooling fan.
4: Connect all cables properly
5: Contact the agent or company to support
is
not
1: Eliminate external faults.
2: Perform the motor auto-tuning.
3: Increase the acceleration time.
4: Adjust the manual torque boost or V/F
curve.
5: Adjust the voltage to normal range.
6: Select rotational speed tracking restart or
operation
is
start the motor after it stops.
7: Remove the added load.
8: Select an inverter of higher power class.
1: Eliminate external faults.
2: Perform the motor auto-tuning.
is
not
3: Increase the deceleration time.
4: Adjust the voltage to normal range.
5: Remove the added load.
6: Install the braking unit and braking
resistor.
110
solutions
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