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Frequent inverter tripping and motor malfunction may be caused by a variety of reasons. Solving this problem requires checking one by one. Here are some common reasons and solutions:

1. Power supply problem

Voltage fluctuation: Check whether the power supply voltage is stable and whether it meets the working range of the inverter and motor. Voltage that is too low or too high will cause the inverter protection to trip.

Voltage imbalance: If the three-phase power supply is unbalanced, the inverter may trip for protection. You can judge by checking whether the three-phase voltage is balanced.

Solution: Use a voltage stabilizer or contact the power company to check the power quality.

2. Inverter setting problem

Overload protection setting: Check whether the inverter's overload protection setting is reasonable. If the setting is too low, the motor will trip when the starting and running load is slightly larger.

Overcurrent protection: The inverter's overcurrent protection value is set too low, or the current at the motor startup is too large, which may also cause tripping.

Solution: Check and adjust the inverter's protection parameters to ensure that the values of overload protection, current protection, etc. are reasonable.

3. Motor failure

Motor insulation damage: Aging or damage to the motor insulation can cause current instability and even cause malfunction.

Motor overload: If the motor runs in an overloaded state for a long time, it will also cause malfunction and tripping.

Solution: Check whether the motor is faulty and perform insulation detection or repair. Confirm that the motor operating load does not exceed the rated value.

4. Wiring problem

Loose wiring: Loose input and output terminals and wiring terminals of the inverter may cause voltage instability, which in turn causes tripping.

Poor grounding: Poor grounding can also cause malfunction of the inverter.

Solution: Check whether all wiring is firm and whether the grounding is normal.

5. Inverter heat dissipation problem

Insufficient heat dissipation: If the heat generated by the inverter during operation cannot be dissipated, the internal temperature will be too high and the overheating protection will be activated.

Solution: Check whether the inverter cooling fan and radiator are working properly to ensure good ventilation and heat dissipation.

6. Electromagnetic interference

External electromagnetic interference: The inverter is sensitive to electromagnetic interference. If there is a strong electromagnetic field around, it may also cause malfunction.

Solution: Check the electromagnetic environment, try to avoid laying cables in parallel with high-frequency equipment, or install filters to reduce interference.

7. Software failure

Failure in the inverter's firmware or control system: In some cases, failure in the inverter's software or control system may also cause malfunction.

Solution: Try to restart the inverter, or contact the manufacturer to check and upgrade the firmware.

8. Improper electrical protection settings

Phase loss protection or overvoltage/undervoltage protection: If these protection settings are unreasonable, frequent tripping may occur.

Solution: Check the inverter's electrical protection settings to confirm whether they meet the actual operating conditions.