Chapter VI Fault Diagnosis and CountermeasuresHigh-performance Universal Inverter User Manual
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hitch
code
Fault name
Troubleshooting
Troubleshooting
countermeasures
parameter identification
3. Low voltage
4. Whether there is a sudden adding load in
the operation
5. The inverter type selection is too small
3. Adjust the voltage to the normal
range
4. Cancel the sudden adding load
5. Choose the frequency converter
with a larger power level
Err05
(Ov1)
Accelerated
overvoltage
1. High input voltage
2. There is an external force dragging the
motor during the acceleration process
3. The acceleration time is too short
4. No brake unit and brake resistance are
installed
1. Adjust the voltage to the normal
range
2. Cancel additional power or install
brake resistance
3. Increase the acceleration time
4. Install the brake unit and the
resistance
Err06
(Ov2)
Slow down over
voltage
1. High input voltage
2. There is an external force dragging the
motor in the deceleration process
3. The deceleration time is too short
4. No brake unit and brake resistance are
installed
1. Adjust the voltage to the normal
range
2. Cancel additional power or install
brake resistance
3. Increase the deceleration time
4. Install the brake unit and the
resistance
Err07
(Ov3)
Constant speed
overvoltage
1. High input voltage
2. There is external forces dragging the motor
during operation
1. Adjust the voltage to the normal
range
2. Cancel additional power or install
brake resistance
Err09
(Uv)
The bus is under
pressure
1. Instantaneous power failure
2. The input voltage of the inverter is not
within the range required by the specification
3. The bus voltage is abnormal
4. The rectifier bridge and the buffer resistance
are abnormal
5. The drive board is abnormal
6. The control board is abnormal
1. Resignation failure
2. Adjust the voltage to the normal
range
3. Seek technical support
4. Seek technical support
5. Seek technical support
6. Seek technical support
Err10
(oL2)
Frequency
converter overload
1. Whether the load is too large or motor
blockage
2. The inverter type selection is too small
1. Reduce the load and check the
motor and mechanical conditions
2. Choose the frequency converter
with a larger power level
Err11
(oL1)
Motor overload
1. Whether the motor protection parameters
are appropriate
2. Whether the load is too large or the motor
blocked
3. Motor, the selection is too small
1. Set this parameter correctly
2. Reduce the load and check the
motor and mechanical conditions
3. Choose motors with larger power
level
Err12 Input the missing 1. Three-phase input power supply is abnormal1. Check and eliminate the problems
