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Specification of high-performance vector convertor
Fault name
Constant-speed overvoltage
Display panel
Err07
1. High input voltage
Check fault
2. External force drives motor to operate during deceleration process
cause
1. Adjust voltage to normal range
Fault handling
2. Cancel external force or install brake resistance
method
Fault name
Fault of control power
Display panel
Err08
Check fault cause 1. Input voltage is not within specified range
Fault handling
1. Adjust voltage to specified range
method
Fault name
Undervoltage fault
Display panel
Err09
1. Instantaneous power failure
2. Voltage on input terminal of frequency convertor is not within specified range
3. Abnormal busbar voltage
Check fault
4. Abnormal rectifier bridge and buffer resistance
cause
5. Abnormal driver board
6. Abnormal control panel
1. Reset fault
2. Adjust voltage to normal range
3. Seek for technical support
Fault handling
4. Seek for technical support
method
5. Seek for technical support
6. Seek for technical support
Fault name
Overload of frequency convertor
Display panel
Err10
1. Too large load or locked-rotor of motor
Check fault
2. Model selection of frequency convertor is small
cause
1. Decrease load, check motor and machinery
Fault handling
2. Select the frequency convertor with larger power grade
method
Fault name
Overload of motor
Err11
Display panel
1. Is protection parameter P9-01 of motor set properly
Check fault
2. Too large load or locked-rotor of motor
cause
3. Model selection of frequency convertor is small
1. Set the parameter correctly
Fault handling
2. Decrease load, check motor and machinery
method
3. Select the frequency convertor with larger power grade
Fault diagnosis and countermeasures
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