Machsupport Forum

Mach Discussion => Feature Requests => Topic started by: ed-laserproductions on May 29, 2011, 01:03:15 PM

Title: Manual Spindle Calibration *PLEASE*
Post by: ed-laserproductions on May 29, 2011, 01:03:15 PM

My mill does not send a tach signal back to the control computer but the spindle speed is visible on the motor controller.
Since I dont have a tach signal I cannot auto-calibrate the spindle.
I wish there was a way to manually enter the spindle speed vs PWM %.

I am sure this feature would be widely appreciated!

Is there a way to manual edit linear.dat or something I can do to achieve manual calibration?

Thanks for a great program!

Title: Re: Manual Spindle Calibration *PLEASE*
Post by: pplug on June 21, 2011, 07:55:05 PM

I second this request! With the mass proliferation of analog voltage vfd controls, I think this would be a helpful feature. I type 15000 into the spindle section and I get 14683. It is repeatable. If I can calibrate manually I could get better accuracy on the vfd.

Title: Re: Manual Spindle Calibration *PLEASE*
Post by: djc on June 22, 2011, 11:04:42 AM

Can you not achieve the same thing by playing around with the pulley ratios in the spindle section?

Title: Re: Manual Spindle Calibration *PLEASE*
Post by: ed-laserproductions on June 23, 2011, 12:56:39 AM

No you cannot. If everything was linear the yes. But nothing is.

They really need to put in a proper calibration system.

Like you it increments the PWM up 5% and asks you to enter the RPM.
It continues that all the way up to 100%.
Then it builds a proper relationship between RPM and PWM.

Such a simple feature, I cannot believe it has not been implemented!