ALARM shuttle drawbar alarm haas

[timmydabull]

For some reason during a tool change the spindle gets ready to load or unload the tool from the changer and just stops and gets an alarm with the spindle still in the carousel.

i have 100psi air at the regulator but the error mentions the drawbar not releasing.

anyone have any suggestions.

thank you in advance.

tim

[Geof]

Solenoid valve not working???

Do you hear the release cylinder operate?

What happens when you load or unload a tool using the manual release?

[timmydabull]

Geof i just noticed the error message says tool clamp fault.

will manually release and load tool,

when auto tool change i hear the airsolenoid open and airr hiss then error message.

i will go listen for the release cylinder.

thank you

[timmydabull]

i dont think i heard the release cylinder operate,just the air solenoid opening and the air releasing.

[timmydabull]

found the servicew manual got some info to start looking.

134 (M) TOOL CLAMP FAULT - While Unclamping, the tool did not release from spindle when commanded.
Check air pressure, solenoid circuit breaker CB4, and for maladjustment of the draw bar assembly.

[timmydabull]

checked the breakers there fine,air solenoid appears to be working(it loads manually) something leads me to believe it may be a switch.

i geus i will look in the direction of the last thing on the list maladjustment of the drawbar assy, i wonder how i do that?

[timmydabull]

still not working

[Geof]

But you can take the tool out by hand with the manual release?

That has me puzzled.

I have had tools give the unclamp fault because of a faulty solenoid valve. I have had the same fault because the tool was too tight in the taper after the spindle cooled. But in both cases the manual release would not work either; just a clack but the tool would not come out.

[timmydabull]

for some reason i think it has something to do with a proximity sensor or switch of some sort,although i am not getting an error message for a switch i cant explain why most everything else checks out.

calling haas is out of the question as i dont have the money to pay them(how you can constantly make parts and not have enough money to fix the machine is beyond me too,this gig is tough),i guess i will be getting a crash course in learing how to diagnose and repair this machine because it will be down until i do.

thank you very much for all your assistance i am going to go look at the relays and parameters on the control and see if i cant figure somethin out.

tim

[Vern Smith]

Tim,

PM awesome83, he will get you on the right track.

Vern

[timmydabull]

one thing i noticed on the machine i have 1 switch as noticed in the attached photo stays lit when the shuttle is in or out it doesnt go out,the other switches go out when metal gets near them.

do you think this is the defective swithch or is it always stay lit?

[timmydabull]

i removed the umbrella motor and verified both proximity sensors work. the front works off of the carosel turning and the one on the motor is triggered twice per revolution.