Originally Posted by
bpratl
At first I thought that the erratic jumping of the selected axis, as mentioned in previous post, was the Xhc and than noise from the VFD, it turned out to be neither.
The problem was if I select "Velocity Only" from the "MPG Mode" function on the MPG display, I will get .065" jumps every 10 to 15 seconds. It runs fine if I select "Single Step %" instead. The lathe ran all day yesterday without a hitch. Could someone please explain the function of the "Velocity Only" and the "Single Step %" settings? Bob