Inovance MD330H - Page 289

Maintenance and
Troubleshooting MD380 User Manual
- 288 -
Before contacting Inovance for technical support, you can first determine the fault type,
analyze the causes, and perform troubleshooting according to the following tables. If the
fault cannot be rectied, contact the agent or Inovance.
Err22 is the AC drive hardware overcurrent or overvoltage signal. In most situations,
hardware overvoltage fault causes Err22.
Figure 9-1 Solutions to the faults of the MD380
Fault Name Display Possible Causes Solutions
AC drive unit
protection
Err01
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 drive board is faulty.
7: The AC drive IGBT is faulty.
1: Eliminate external faults.
2: Install a reactor or an
output lter.
3: Check the air lter and the
cooling fan.
4: Connect all cables
properly.
5: Contact the agent or
Inovance.
Overcurrent
during
acceleration
Err02
1: The output circuit is grounded
or short circuited.
2: Motor auto-tuning is not
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 operation is
performed on the rotating motor.
7: A sudden load is added during
acceleration.
8: The AC drive model is of too
small power class.
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 start the
motor after it stops.
7: Remove the added load.
8: Select an AC drive of
higher power class.
Overcurrent
during
deceleration
Err03
1: The output circuit is grounded
or short circuited.
2: Motor auto-tuning is not
performed.
3: The deceleration time is too
short.
4: The voltage is too low.
5: A sudden load is added during
deceleration.
6: The braking unit and braking
resistor are not installed.
1: Eliminate external faults.
2: Perform the motor auto-
tuning.
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.