I have a Sabre 1250 that has sat for 3 years. After many different repairs, I am finally getting close to making a part.....I thought. When I try to put a tool in the spindle or even do a tool change, I get an alarm for air pressure and also for drawbar not clamped. So I moved the spindle down close to the table so I could try and remove the cover. When I moved it down, I got a Z Axis overtravel alarm 39-7. I thought if I moved it up I could clear the alarm. I think the limit switch is either dead or stuck because no matter what I do or how high I move the spindle, the same alarm keeps coming up. I looked for a limit switch on the z axis but I haven't been able to find it. Does anyone know where the Z Axis limit switch is for a 1996 Sabre 1250?
IIRC they are up near the top of the travel on z. You may have a loose wire or a bad proximity switch on the spindle for the unclamp error.