Inovance MD380L - Function Code Management (Group FP); Control Optimization (Group A5); Monitoring Parameters (Group U0)

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6 Trouble shooting
6.1 Inverter fault codes
Display Fault Name Possible Causes Solutions
Err02
Overcurrent during
acceleration
1. The output circuit is short circuited.
2. The acceleration time is too short.
3. Manual torque boost or V/F curve is not
appropriate.
4. The power supply is too low.
5. The startup operation is performed on the
rotating motor.
6. A sudden load is added during acceleration.
7. The AC drive model is of too small power
class.
1: Eliminate short circuit.
2: Increase the acceleration time F0-17.
3: Adjust the manual torque boost or V/F curve.
4: Check that the power supply is normal.
5: Select speed tracking restart or start the motor
after it stops.
6: Remove the added load.
7: Select a drive of higher power class.
Err03
Overcurrent during
deceleration
1. The output circuit is short circuited.
2. The deceleration time is too short.
3. The power supply is too low.
4. A sudden load is added during deceleration.
5. The braking resistor is not installed.
1: Eliminate short circuit.
2: Increase the deceleration timeF0-18.
3: Check the power supply, and ensure it is normal.
4: Remove the added load.
5: Install the braking resistor.
Err04
Overcurrent at
constant speed
1. The output circuit is short circuited.
2. The power supply is too low.
3. A sudden load is added during operation.
4. The AC drive model is of too small power
class.
1: Eliminate short circuit.
2: Adjust power supply to normal range.
3: Remove the added load.
4: Select a drive of higher power class.
Err05
Overvoltage during
acceleration
1. The DC bus voltage is too high.
2. An external force drives the motor during
acceleration.
3. The acceleration time is too short.
4. The braking resistor is not installed.
1: Replace with a proper braking resistor.
2: Cancel the external force or install braking
resistor.
3: Increase the acceleration time.
4: Install a braking resistor.
Err06
Overvoltage during
deceleration
1. The DC bus voltage is too high.
2. An external force drives the motor during
deceleration.
3. The deceleration time is too short.
4. The braking resistor is not installed.
1: Replace with a proper braking resistor.
2: Cancel the external force or install braking
resistor.
3: Increase the deceleration time.
4: Install the braking resistor
Err07
Overvoltage at
constant speed
1. The DC bus voltage is too high.
2. An external force drives the motor during
deceleration.
1: Replace with a proper braking resistor.
2: Cancel the external force.
:
Voltage thresholds
Voltage Class DC Bus Overvoltage
threshold
DC Bus Undervoltage threshold
Braking operation level
Three-
phase 220 V
400VDC 200VDC 380VDC
Three-
phase 380 V
810VDC 350VDC 750VDC
Err08
Control power fault
The input voltage exceeds the allowed range.
Adjust the input voltage to within the allowed
range.