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Specification of high-performance vector convertor
Fault name
Fault of PID feedback loss during operation
Display panel
Err31
Check fault cause 1. PID feedback is smaller than PA-26 set value
Fault handling
1. Check PID feedback signal or set PA-26 to be a suitable value
method
Fault name
Cycle-by-cycle over-current fault
Display panel
Err40
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
Fault of motor switch during operation
Display panel
Err41
Check fault cause 1. Alter current motor selection through terminal during operation of frequency convertor
Fault handling
1. Switch motor after frequency convertor halts
method
Fault name
Fault of too large speed deviation
Display panel
Err42
1. Incorrect parameter setting of encoder
Check fault
2. No parameter identification is conducted
cause
3. Too large speed deviation, parameter settings of P9-69, P9-60 are irrational
1. Set parameters of encoder correctly
Fault handling
2. Conduct parameter identification
method
3. Set detection parameters rationally based on actual situation
Fault name
Over-speed fault of motor
Display panel
Err43
1. Incorrect parameter setting of encoder
Check fault
2. No parameter identification is conducted
cause
3. Settings of over-speed detection parameters P9-69, P9-60 are irrational
1. Set parameters of encoder correctly
Fault handling
2. Conduct parameter identification
method
3. Set detection parameters rationally based on actual situation
Fault name
Over-temperature fault of motor
Err45
Display panel
1. Wiring of temperature sensor is loose
Check fault
2. Motor temperature is too high
cause
1. Detect temperature sensor and eliminate fault
Fault handling
2. Decrease carrier frequency or adopt other heat dissipation measures to handle heat
method
dissipation of motor
Fault diagnosis and countermeasures
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