VF2 tool carriage stalled midway

[SMAXX]

Hi I have a 1992 Haas VF2 and today midway thru a tool change the carriage stopped midway its now locked midway to the home position could it be a limit switch/ home switch ???

Thanks in advance

[HuFlungDung]

I've never had to mess with my toolchanger yet, but isn't there a crank arm that drives the carousel back and forth? I don't think the limit switch would cause the problem, because those would be activated at the end of stroke.

Perhaps there is a fuse blown on the motor driving the crank arm?

How do the wheels and guides look on the slideway for the carousel?

Can you pull it into position manually?

Could there be a broken key or pin in the crank arm actuator hub?

[SMAXX]

Thanks I got the call and have yet to inspect it the operator stated he has fault code 125 I will be sure to look at all the items you suggested Thanks

Originally Posted by HuFlungDung I've never had to mess with my toolchanger yet, but isn't there a crank arm that drives the carousel back and forth? I don't think the limit switch would cause the problem, because those would be activated at the end of stroke. Perhaps there is a fuse blown on the motor driving the crank arm? How do the wheels and guides look on the slideway for the carousel? Can you pull it into position manually? Could there be a broken key or pin in the crank arm actuator hub?

[SMAXX]

Thanks I got the call and have yet to inspect it the operator stated he has fault code 125 I will be sure to look at all the items you suggested Thanks for the quick reply

[haastec]

The switches can most definitely be a cause for the alarm. Most common problem is that they get sticky and do not release quick enough. If they move freely, check the diagnostics page while manually pushing one each of the switches to make sure they toggle.

[MKproto]

I dont know how old you machine is but there is a roller bearing in there that rides in a slot on the aluminum casting. The bering in mine went bad and galled the aluminum and jammed itself.. Tool changer had to taken apart to replace the bearing. Cleaned the goues and blended the casting and was back up and running in about an hour after I got the bearing from the HFO.

[JoBwan]

Check your tool unclamp limit switch as well as the toolchanger limit switches. I had this many times.

[CAN MACHINE]

I had a similar problem and it was the switches sticking. The tech sprayed them with a electronic contact cleaner to free them up.