Centroid Community CNC Support Forum

If no voltage then you toasted Acorn analog output. Most common issue is miswiring to the drive. More specifically, connecting to the VFD 10vdc source rather than the VFD analog signal input and it's common.

I take it the vfd isn’t the issue but I used a most likely huan yang copy vfd as the pins didn’t match the acorn diagrams. I did some testing and put together a diagram that I used. I think I put in my mill thread if ur interested.

Any you can verify the VFD is not the issue by using a 9V battery between the analog input and analog ground pins on the VFD.

Thanks for all the replies. AS Marty says it looks like my voltage out is toast so I'm going to use a potentiometer for now every thing else works fine.