Cincinnati Millacron X axis slide

Hey Jorge,

Yes that is correct, you will need to have the machine hydraulics on in order to move the X axis. The brake on the axis is hydraulicly released/spring applied. I believe I used the x axis enable out signal in ladder to fire the solenoid for the brake that way if the servo drive is not powered up the brake will always be applied. Not to sure but you probably need to be in the 650psi range on your machine to hold the entire slide with no power from the servo drive. Our machine will actually creep up a little bit when the hydraulics are cold the brake is released and the drive is unhooked. And it will fall quickly with those same conditions with the hydraulics off and the brake off.

Your machine may have a pressure reducing valve on the backside of the x slide unit to regulate the pressure to that cylinder. The 10cc we just got done with does not have that valve it is solely based off of system pressure(that's why it would creep in the mornings with the brake released and servo off). Pretty much all the bigger machines have that valve to adjust the pressure more precisely.

Thanks for your answer,


on Monday we will activate our hydraulic system. I've only seen that has a solenoid, not regulate the pressure.

unfortunately I could not see the machine working never. to get an idea of how it worked.

friend I have another problem.

Now I have movement in both axes,

Today cautiously move my X axis achieved by removing the brake slowly and taking a piece of wood down.

but I worry that the variable:

MAX_ACCELERATION: 300,

I'm not sure that value. and not really not getting to an exact value.

In my case my Z axis moving 5000mm/min

0mm to 150mm away, when it reaches 150mm feels "blow" when it reaches the required position.

feels the blow in both directions, but more when going from 0 to 150mm
when going from 150-0 does feel little.

lubricate well, no obstruction, the shaft can move it by hand,

I think that may be the acceleration, or it may be that I have not reached the correct PID?

the blow is when the motor stops. not express it in English, sorry


Thanks for all your time, and your help

RICK,

regards

a lubrication system is also through a compressed air operated pump?

the ladder diagram I can serve my?

Thank you.

I do not understand what system you are talking about for your lathe? Is it the way lube system for the machine?

If it is the way lube system, then yes I controlled mine through the ladder.

Thanks for your answer,

if the lube system.

mine has a pump that works with compressed air. I imagine must send a control signal to a solenoid to miss air through it and pull the plunger pump. is equal to yours.

your ladder is also adapted to mine?

mine must activate by sending pulses to work well.

I hope you understand me, excuse my English.

Jorge Viloria

Andy, thanks for your response.


The problem I have now is that if you gain more acceleration, the movement does me good. no longer strikes,

but tried to set the PID of the servomotors. If I increase the acceleration of error peaks increase in the acceleration and deceleration.

not if it is another problem but I can not increase my P to more than 5 because it begins to oscillate. Peter told me that a low P is for adjustment.

Try D, but has been in vain. right now, I'm trying to I.

But the truth I'm lost.

Andy.

the machine moves well, although I have not managed to move 10000mm/min. I've only come to 7000mm/min. when 7000mm/min move faster than I get a warning in the "servodrivers".

The truth does not quite understand the translation.

the problem is that obviously when minus the max_acceleration the movement acceleration and deceleration slows. increase when moving fast acceleration in the acceleration deceleration but f-error causes very high peak in the acceleration and deceleration.

I do not understand that the input and output units of the PID?

work in programming of CNC machines, and moves well when I apply more acceleration. but the problem of peak-error f are what make me doubtful if I go on track

in the image pidnew-h acceleration 600
in the image pidnew-f acceleration 800