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Specification of SN200G high-performance vector convertor
Fault diagnosis and countermeasures
- 155 -
Fault name
Constant-speed overvoltage
Display panel
Err07
Check fault
cause
1. High input voltage
2. External force drives motor to operate during deceleration process
Fault handling
method
1. Adjust voltage to normal range
2. Cancel external force or install brake resistance
Fault name
Fault of control power
Display panel
Err08
Check fault cause 1. Input voltage is not within specified range
Fault handling
method
1. Adjust voltage to specified range
Fault name
Undervoltage fault
Display panel
Err09
Check fault
cause
1. Instantaneous power failure
2. Voltage on input terminal of frequency convertor is not within specified range
3. Abnormal busbar voltage
4. Abnormal rectifier bridge and buffer resistance
5. Abnormal driver board
6. Abnormal control panel
Fault handling
method
1. Reset fault
2. Adjust voltage to normal range
3. Seek for technical support
4. Seek for technical support
5. Seek for technical support
6. Seek for technical support
Fault name
Overload of frequency convertor
Display panel
Err10
Check fault
cause
1. Too large load or locked-rotor of motor
2. Model selection of frequency convertor is small
Fault handling
method
1. Decrease load, check motor and machinery
2. Select the frequency convertor with larger power grade
Fault name
Overload of motor
Display panel
Err11
Check fault
cause
1. Is protection parameter P9-01 of motor set properly
2. Too large load or locked-rotor of motor
3. Model selection of frequency convertor is small
Fault handling
method
1. Set the parameter correctly
2. Decrease load, check motor and machinery
3. Select the frequency convertor with larger power grade