Have a look at this
https://www.newport.com/medias/sys_m...Controller.pdf
it gives a good description of KP
ok so this may be simple but what is 'speed loop kp'
it states in the stepper motor manual referencing faults regarding motor noise that the 'speed loop kp' is too high
this is only affecting the Z axis
so my question is what is it? and how to fix it?
thanks neil
Have a look at this
https://www.newport.com/medias/sys_m...Controller.pdf
it gives a good description of KP
sorted out the issue, turns out it was an encoder wire that was incorrect
thanks neil