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  1. #1
    Max Step Frequency:The maximum step frequency that the CPU will generate.
    For motordrives it is needed to lower the maximum frequency.
    In case the driveis unable to handle the high step frequency or low step-pulse width.
    Some of the digital drives from Leadshine cannot handle 125Khz steprate,they need a setting of 90Khz or lower.

    You could try a few speeds and see what happens.
    For the power supply you need to measure the voltage and look if that matches up with what the drives have been made to handle.

    Also send a email to the Eding guy , he probably knows instantly why this is happening.

    Quote Originally Posted by JAZZCNC View Post
    Not being funny towards you saying this but that's total rubbish about voltage. 3V wouldn't even turn that motor.! This guy had loads of issues starting with the fact he's using a laptop with mach with parallel port and won't go into the machine.! . . . . He was telling porky's me thinks.!!
    I was just reading the comments looking for a solution for this guy. There are low voltage steppers, I have not looked at the specs of that one.

    ---
    Replacing all the electronics by better ones would cost around 500$ , scrapping this is not the solution.
    What you have is a set-up issue, there is nothing wrong that can't be fixed with some knowledge or a small amount of money.

    Asking on the forum If anyone lives near is not an bad idea.

    ---
    Do the other axes work without issue ? if so you might want to switch two of those motors and see if the issue is still there. If the "stalling" motor works just fine on the other axes than it is:
    -Wiring issue
    -Settings isse
    -Rare case driver is broken (try to switch the driver from the other working axis to this one)
    - Rare rare case there is something funny going on at that output on the eding cnc board.
    Last edited by DuffelBuffelWuffel; 23-09-2015 at 10:06 PM.

  2. #2
    Quote Originally Posted by DuffelBuffelWuffel View Post
    Some of the digital drives from Leadshine cannot handle 125Khz steprate,they need a setting of 90Khz or lower.
    Again not having go at you with this reply it's more for the sake of others who may read it.!! . . . And the OP.!

    This is not true at all I've fitted 100's of leadshine Digital drives and they easily handle 125Khz and will infact work perfectly fine at 200Khz or more provided the BOB and Controller can handle it.!

  3. #3
    That was directly from the eding cnc manual , I'm not making this up.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by DuffelBuffelWuffel; 23-09-2015 at 10:24 PM.

  4. #4
    Quote Originally Posted by DuffelBuffelWuffel View Post
    That was directly from the eding cnc manual , I'm not making this up.
    Didn't think for one minute you where and please don't take offense. It's just I've used Leadshine Digital drives for years and fitted just about all the models in there range and never had any issues with Khz issues.
    I soley use Motion controllers with a minimum frequency of 125Khz and never seen this problem so I'd be suspicious to whether it's Eding blaming someone else for weak link at there end.?
    Last edited by JAZZCNC; 23-09-2015 at 10:29 PM.

  5. #5
    It can be that there are/were some leadshine copies on ebay or a bad batch. Causing the crystal / clock signal to be out of spec which may lead to timing issues at higher speeds or when the conditions are just right. But who knows ... just speculating here.

    Anyway, the OP has to post quite a bit more info here for ppl to help hem.

    - Picture of dip switches settings for each of the drivers + model numbers + model numbers steppers
    - Model number of the power supply
    - Upload the cnc.ini file somewhere (mega.co.nz for example or the forum or copy the text and put it on pastebin.org )
    - What works and what does not work ? Do other axis work , if you just click step (click once a second or so) with the onscreen jog pad does it still have any issues or does the stalling stop?
    - If other axis work , try switching the drivers / motors and see what happens.

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