Try this: Remove the axis servo drive belt cover. Do the home procedure, when that axis errors mark the pulley to belt relationship using a paint pen. (sometimes after a fault shutdown occurs a second home attempt will succeed, if this happen every time the following may help) Loosen the servomotor and reindex the timing pulley approx. 90 deg from the mark on the belt, tension the belt and home again. If it still does not work, try a couple more times keeping a drawing record on each belt adjustment. This hopefully will help.
Also you can check the distance to the end of ballscrew travel, Once the axis has limited and shutdown. Mark the ball screw in an appropriate place with a paint pen, then manually turn the ballscrew to the end of travel, record this in revolutions. This will probably be a fraction of a turn. if the switches have not been altered.
That is great if the bulb R&R really worked for you. I am glad to see that you got the FIST monitor hooked up, I've been recording output for ages and would be interested to see what the normal output from another machine during different runs would be, compared to my B8? But first things first.  |