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How to repair the four-way inverter overvoltage trip?

The four-way inverter should be repaired and maintained to extend the service life of the inverter. If people repair, then how to repair and maintain Quadruple Inverter? Let's take a look at the animation below.

Because the frequency converter has good speed control function, it has been successfully applied to various fields. However, if the inverter is not well-maintained or improperly used, it often causes the inverter to fail to operate normally, and even causes equipment failure, resulting in production interruption. With the improved maintenance function of the frequency converter and the experience of stacking and improving the ability to deal with the fault of the inverter, the strike time of the equipment will be shortened, the safety of the equipment operation will be improved, and the economic loss of the enterprise will be reduced.

If there is a problem of overvoltage tripping of the DC circuit during operation, what does the four-way inverter repair do?

Then the repair of the square inverter should do so. The ABBACS600 frequency converter is equipped with a brake chopper and a braking resistor, but the commissioning personnel select the voltage controller to be ON when debugging, and the two devices are not used. The brake chopper and the braking resistor are put into operation after the DC circuit overvoltage trip, but the result is more frequent.

When the four-way inverter was repaired, it was found that the inverter had been put into operation for several months, and the incoming line voltage was within the allowable scale when the trip occurred. Knowing the overvoltage of the DC link when it is wrong, I think that when the voltage controller is used to adjust the feedback current and avoid the DC circuit overvoltage, the change rate of the load current is too large, which is an important cause of overvoltage. The equipment found that a piece of material was stuck between the conveyor belt and the discharge port. After the removal, the inverter was working normally.

Disassemble the inverter casing and check that the brake chopper is equipped with a three-speed line voltage selection device (400V, 500V, 690V). This is to get used to different incoming lines. The voltage, in which the shorting ring is to be inserted in the 690V gear, causes the threshold of the brake chopper and braking resistor to be put into operation too high, if the rf1 of the ACS600 inverter with a line voltage of 400V If it doesn't work, then move the shorting ring to 400V, so experiment with the time to reduce the deceleration, whether the brake chopper and braking resistor work is normal.

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