Mazak spindle problems

[ktd]

We have a Mazak Vtc-41 mill with Mazatrol EIA control and every time we stop the spindle above 2000 Rpm we get a spindle pack alarm and a spindle zero speed alarm. The machine has no problems turning at any rpm from 100-6000 until you input an M05 are press reset. I know that there are some Mazak gurus in this forum so I thought that I would give it a shot.

 

Thanks

[Jack Mitchell]

ktd,

 

You are all over the map with this one.

Please restate your problem and I will attempt to help you – your initial question is quite frankly, too confusing for us to attempt a reasonable answer.

 

Mazatrol Eia control does not exist – M2, M32, Fusion 640M, etc are Mazatrol controls that also allow for EIA/ISO programming. The VTC/41 most likely has the M32 control.

 

What error is given on the screen IE: error number?

Please try a cut & paste approach if you’re concerned with Mastercam code generation so that we can see what it is that you are trying to accomplish.

 

S0 M03 is valid and certainly has its place.

 

M05 is a waste of code on any Cnc machining center since a manual key, M19, reset, MDI, M06, etc will all accomplish the task for free.

 

I am not smart mouthing you with this reply but I expect a more specific question rather than the generalization you have submitted.

 

Regards, Jack

[pip]

Mostly I agree with Jack, we need the error code in order to help..We had a spindle controller board go, on our VQC 15/40. With basically the same faults as you have written, but without the error codes we cant say what is wrong..

[ktd]

Our control is a Mazatrol EIA control. It has no mazatrol option and can only be controlled by code.

 

The machine functions fine at speeds lower than 2000rpm. If the speed goes over 2000 rpm when the spindle stops (no matter how you stop it) you get these two alarms. The first alarm is a (503) spindle zero speed alarm and the second is (521) spindle pack alarm. If you manually turn the spindle on at 2000 rpm then stop it you still get the alarms.

[Bill Craven]

Early Mazak VTC's came with a Yasnac control

[Bill Craven]

ktd,

 

It sounds like you have a problem inside of the spindle controller, if it works with no problem at speeds below 2000. You might be able to change the deceleration parameters in the spindle controller to allow you to continue running (for a while), but this is usually just the beginning of the problem.

[ktd]

Thanks for the quick reply. That's what I thought it could be but I wasn't sure.