I’m thinking about updating the controls on a manual hoist and converting it to an automated hoist. Currently, the hoist uses Variable Frequency Drives (VFD’s) for the lift and travel motors. I was wondering if it would be possible to control the VFD’s with a +/- 10V signal from a servo controller? (I like the thought of having a servo controller worry about the positioning of the hoist rather than me trying to code it into a PLC using a high speed counter card) I don’t need the extreme accuracy of a full servo system. Positioning the hoist to within + or - 1/4 inch would be fine. I was told that it could easily be done, but I always thought that a VFD doesn’t have the response needed to work in such a setup. Does anyone have any thoughts on the matter? Thanks.