Inovance MD280NT2.2GB - Faults and Solutions Analysis

Troubleshooting MD280 User Manual
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Chapter 8 Troubleshooting
8.1 Faults and Solutions
The MD280 provides fault information and protective functions. After a fault occurs, the AC
drive implements the protection function, and displays the fault code on the operation panel
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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
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Table 8-1 Solutions to the faults of the MD280
Fault Name Display Possible Causes Solutions
Overcurrent
during
acceleration
Err02
1. The output circuit is grounded
or short circuited.
2. The acceleration time is too
short.
3. Manual torque boost or V/F
curve is not appropriate.
4. The voltage 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.
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2. Increase the acceleration
time.
3. Adjust the manual torque
boost or V/F curve.
4. Adjust the voltage to normal
range.
5. Select rotational speed
tracking restart or start the
motor after it stops.
6. Remove the added load.
7. Select an AC drive of higher
power class.
Overcurrent
during
deceleration
Err03
1. The output circuit is grounded
or short circuited.
2. The deceleration time is too
short.
3. The voltage is too low.
4. A sudden load is added during
deceleration.
5. The braking unit and braking
resistor are not installed.
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2. Increase the deceleration
time.
3. Adjust the voltage to normal
range.
4. Remove the added load.
5. Install the braking unit and
braking resistor.
Overcurrent at
constant speed
Err04
1. The output circuit is grounded
or short circuited.
2. A sudden load is added during
operation.
3. The AC drive model is of too
small power class.
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2. Remove the added load.
3. Select an AC drive of higher
power class.
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