the arrow 1000 mill I'm working on has got me baffled. When it goes to change from tool 4 to tool 5 the z axis moves up from the part but not up to tool change position and then sets there with the spindle running. It will have no alarm and will sit there running for infinity. I cleaned and reseated all the connectors to the spindle amp and the problem went away for 2 days, then reoccured.
Help
Ray