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  1. #11
    Doddy's Avatar
    Lives in Preston, United Kingdom. Last Activity: 23 Hours Ago Has been a member for 5-6 years. Has a total post count of 306. Received thanks 35 times, giving thanks to others 10 times.
    Quote Originally Posted by john swift View Post
    from your description I don't see any thing wrong
    I quite agree. Thanks, Richard, for the reply. It does sound as though the steppers are underdriven... but I can't see any cause.Not sure about sw4 - you do say it stalls when operating so half-current setting shouldn't come into play. How warm are the steppers after a protracted period energised?, if not hand-hot then try upping the current setting on the drivers. After that I'm out of ideas.

    You've not got any silly-long lengths of cable in the system?, no dodgy fine gauge cables to drop the supply voltage at the stepper driver?

    Ah, one point - you still have the trapezoidal lead screws... ah - they will put a larger load on the steppers than a ballscrew... but you do use powerful steppers. Nope, I'm out of ideas.
    Last edited by Doddy; 21-06-2018 at 09:37 PM.

  2. #12
    Just my 2 cents worth how big are the hand wheels because they will take a lot of inertia to drive them.
    The more you know, The better you know, How little you know

  3. #13
    hello all out there,thought i would try to send some pics of my man cave,hear goesClick image for larger version. 

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