Re: [CAD_CAM_EDM_DRO] VFD Feedback

Vector drives often have a feedback option to allow precise control of
position. It's not as tight as what you would get with a true servo motor
but it works for threading if the linear axis is electronically geared to
the spindle. Some low end machining centers use this method effectively.

Doug

----- Original Message -----
From: Joe Vicars <jvicars@...>

> Does anyone know if VFD's have a feedback loop to keep the motor at a
> specific speed under load? If they do then couldn't you use this for
> threading?