KE300A Inverter Trouble shooting
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Chapter 8 Trouble Shooting
8.1 Fault and Trouble Shooting
Fault Name
Converter short circuit protection
Fault Code
E-01
Reason
1. Short-circuit or ground fault occurred at inverter output side
2. The cable connecting the motor with the inverter is too long
3. The module is over-heat
4. The cable connections inside the inverter are loosen
5. The main board is abnormal
6. The power board is abnormal
7. The IGBT module is abnormal
Solution
1. Inspect whether motor damaged, insulation worn or cable damaged
2. Install a reactor or output filter
3. Check if the air duct is blocked and if the fan is in normal status, and resolve
the existing problems
4. Make sure the cables are connected well
5. Ask for technical support
6. Ask for technical support
7. Ask for technical support
Fault Name
Over current when acceleration
Fault Code
E-02
Reason
1. Short-circuit or ground fault occurred at inverter output side
2. Control mode is vector control & motor parameters are not identified
3. The acceleration time is too short
4. The manual torque boost or V/F curve is not proper
5. The voltage is too low
6. Start the running motor
7. Load is added suddenly during the acceleration
8. Capacity of inverter is too small
Solution
1. Inspect whether motor damaged, insulation worn or cable damaged
2. Identify the motor parameters
3. Increase the acceleration time
4. Adjust the manual torque boost or V/F curve
5. Make the voltage in the normal range
6. Select speed tracking start or start the motor till it stops
7. Cancel the sudden added load
8. Select bigger capacity inverter
