Quote Originally Posted by JAZZCNC View Post
You need to supply more info for us to be able to help, such as the model # of VFD Huanyang makes many different models and any parameters you have changed or set up. Also, details on the Motor plate would help. ie Voltage, current, etc.

Also, are you sure it's a 380V output VFD.? Most are 240 single-phase inputs with 240V 3-phase output. Not many provide 240v input with 380v output and I don't think Huanyang makes one but could be wrong on that.!
Hi Jazzcnc, The VFD is 3 phase in and 3 phase out (380v) 4kw and brand new. Motor is 4kw 420v 50hz 1420 rpm 8.5 Amps, I did a factory reset on the VFD which changed the parameters from 400 Hz to 50
The motor speed can now be controlled but only via the up/down arrows, when I change the setting to be controlled via the rotary knob the motor will only ramp up to half speed. Using it with the arrows but would be better if I could use the knob