Need help with a sensorless vector VFD and 2.2kw motor.

[vre]

Try to contact chinese company Hyria Electrical Co.Ltd
Have you connected a braking resistor ?
Perhaps autotuning in vector mode does not work correct try to set the values manually.
I dont know if this solve the problem...

I have same type of vfd SL-440EE but i dont have high speed spindle motor to try.
I have only 3 phase asynchronous motor 1400 rpm.
In my vfd some electronic components are missing from pcb max485 ic / some connectors / 1 igtb / dome smd reistors .
Perhaps this pcb is the same and for bigger model and missing components are for higher power vfd.
I have soldered a missing max485 to have rs485 connection.