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Author Topic: Loosing steps when milling slowly  (Read 10002 times)

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Re: Loosing steps when milling slowly
« Reply #10 on: February 27, 2011, 11:57:03 AM »
Yep.. that might also cause the problem with the lost steps during slow run? I did the setup as according to the manual...

Offline ger21

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Re: Loosing steps when milling slowly
« Reply #11 on: February 27, 2011, 12:37:13 PM »
Gerry

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Re: Loosing steps when milling slowly
« Reply #12 on: February 27, 2011, 03:11:57 PM »
Hmm.. I didn't think of that as a problem, but yes, that could be a problem of course... Maybe i will get dampers for the steppers, don't have the the tools for making them myself so will have to buy them.. So I will do a bit of research on google first :)
Re: Loosing steps when milling slowly
« Reply #13 on: March 07, 2011, 09:23:26 AM »
I tried too take the stepper on the y-axis of the machine, and then i could feel and hear that the stepper is loosing steps. It didn't matter which speed it was going, it just got woorse when it was running low speeds.
So it is not resonance...

Offline Hood

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Re: Loosing steps when milling slowly
« Reply #14 on: March 07, 2011, 09:57:19 AM »
Tried a wider  pulse? (Motor Tuning page)

Hood
Re: Loosing steps when milling slowly
« Reply #15 on: March 07, 2011, 10:18:09 AM »
yes, tried with wider pulses, but that doesn't do the trick, also tried sherline mode and changing the frequenzy. The test of the computer says it is perfect for running 35.000hz and also 25.000. But i loose steps no matter what fequenzy i use...
Re: Loosing steps when milling slowly
« Reply #16 on: March 07, 2011, 10:23:09 AM »
in config/general config raise the debounce interval to 2000.
Re: Loosing steps when milling slowly
« Reply #17 on: March 07, 2011, 01:54:29 PM »
That did not do the trick... isn't debounce for input signals? The computer isn't connected to earth. I might try to do that. It could be noise in from the lpt port I guess?

Online Tweakie.CNC

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Re: Loosing steps when milling slowly
« Reply #18 on: March 08, 2011, 02:18:14 AM »
Quote
The computer isn't connected to earth. I might try to do that. It could be noise in from the lpt port I guess?

Yup - that would do it.  ::)

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.
Re: Loosing steps when milling slowly
« Reply #19 on: March 11, 2011, 05:03:33 AM »
Hi again. I have now tried to connect the pc to earth and also the powersupply and -24VDC. That will take all the noise, but still, the steppers are loosing steps, expecially when running slow.