(32 10)

3.05 FW 1 bit 2

Reason for failure:

The DC voltage of the intermediate circuit is too high. The trip limit of DC overvoltage is1.31.35 U 1max, in which u1max is the main power supply voltage standard.

Maximum value of perimeter. For a 400-volt battery, the maximum value of u 1 is 4 15 volts ... for a 500-volt battery, the maximum value of u 1 is 500 V ... according to the main power supply.

According to the voltage trip standard, the actual voltage of the intermediate circuit of 400 V unit is 728 VDC, that of 500 V unit is 877 VDC, and that of 690 V unit is.

425 volts DC.

Solution:

Check whether the overvoltage controller is on (parameter 20.05). Check the static or transient overvoltage of the main power supply.

Check the brake chopper and resistor (if used).

Check the deceleration time.

Use the free parking function (if available).

The inverter is equipped with a brake chopper and a brake resistor.