Is it related to frequency converter whether Hitachi elevator can open or not?

Yes Inquired by the elevator recruitment network, it was learned that the failure of Hitachi elevator to open the gate was related to the frequency converter. Failure or poor signal of Hitachi elevator frequency converter will cause the brakes to fail to work normally, which will lead to the brakes not being opened. Hitachi elevator can't open the brake, so you can check whether the inverter works normally, such as whether the power supply voltage is normal, whether the communication is normal and whether the output signal is in place.