Spindle orientation prob during tool change

[CRABMAN]

Hello, I've been getting an intermittent spindle orientation problem on an arrow 1250 w/ 2100 control during tool change for a couple years that four different service guys cant figure out. The spindle searches for home position to do the tool change and cant find it after making several revs and eventually alarms out. It will do an m19 orient every time without fail. We changed spindle drives and it didnt help. The prox switches show to be working on the switch itself and programware. Not a heat problem because it will start messing up first thing in the morning as well as in the afternoon and we have a/c in the cnc shop. Sometimes runs a month without fail, other times every other day. Any advice?

[Boots]

You may have tried this already. Put your M19 on a seperate line just before the M6 (tool chg. call) in your program. Sounds like to me though you have a sticky switch that is not making or an electrical intermitten short.

[mmckell]

Originally Posted by CRABMAN Hello, I've been getting an intermittent spindle orientation problem on an arrow 1250 w/ 2100 control during tool change for a couple years that four different service guys cant figure out. The spindle searches for home position to do the tool change and cant find it after making several revs and eventually alarms out. It will do an m19 orient every time without fail. We changed spindle drives and it didnt help. The prox switches show to be working on the switch itself and programware. Not a heat problem because it will start messing up first thing in the morning as well as in the afternoon and we have a/c in the cnc shop. Sometimes runs a month without fail, other times every other day. Any advice?

Crabman

did you ever find the problem with this?
i just had the same thing on my Arrow500 with A2100 controll - the fan on top of the spindle went bad. changed the fan and it's good... at least for now. never had the problem till a couple weeks ago when our climate control went south and our shop got close to 30 deg C - too hot without a proper working fan, i guess

have a good one!
Mac