Hey guys Ive been using a dmm motor/servo on a 4th axis for few years now and it has been working great. I added a second machine and wanted to be able to use the same 4th axis so bought a second dmm drive for this machine, but im having issues with the encoder output. The encoder signal randomly disappears for a few tenths of a second and then comes back at mid-high speed. See attached pics. Note horizonal sections which indicate lost movement.
I tried swapping drives with original machine and new machine works great with the original drive. So i thought i must just have a bad drive, but i ordered a replacement and installed it, and its doing the exact same thing. Im thinking it must be some kind of issue with the encoder output on these newer dmm drives? Is there anything else i can be overlooking to cause this or is it just a problem with the drive? Thanks.