Milling machine - video

[SteelCraft]

I used my mill for couple days and there is a problem with motor-filter-vfd setup.

My vfd throws overcurrent error when I'm pushing hard on the motor (big drill for example) or when I set carrier frequency below 8 khz - during acceleration/deceleration. It never happened before installing the filter.

Motor is 3 phase 1,5kW, 380V, 1420 rpm, 3,4Amps (parameters from motor nameplate). VFD is for 1,5kw motor, and it can take 3,8 Amps. Filter is rated for 5 Amps.



I connected wires from VFD to UVW input on filter, ABC output goes as phase wires to motor and N is connected to this plate (marked in red circle)


Do you have any ideas what can be wrong?

I think too small VFD would throw overcurrent errors even without filter.