Other breakdown1, undervoltageDescription of the inverter power input part of the problem, to be checked before they can run.2, the temperature is too highSuch as motor temperature detection device, check the motor cooling; inverter temperature is too high, check the inverter ventilation.

Overload faultOverload faults include inverter overload and motor overload. It may be due to acceleration time is too short, excessive DC braking, power grid voltage is too low, overloaded and other causes. Generally by extending the acceleration time, extended braking time, check the grid voltage.

Overcurrent faultOvercurrent fault can be divided into acceleration, deceleration, constant speed over current. It may be due to the inverter acceleration and deceleration time is too short, the load changes suddenly, the load distribution is uneven, the output short circuit and other causes. At thi

Overvoltage faultThe over-voltage of the inverter is concentrated on the DC voltage of the DC bus. Under normal circumstances, the inverter DC three-phase full-wave rectified average. If 380V line voltage calculation, the average DC voltage Ud = 1.35 U line = 513V. When an overvoltage occurs, the st