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IndustryArena Forum > MetalWorking Machines > Okuma > Okuma mv4020 ATC 15711 error
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  1. #1
    Join Date
    Nov 2022

    Okuma mv4020 ATC 15711 error

    New member, longtime forum browser. I have a 1999-2000ish okuma mv4020 w/ u10m controller that I acquired a few months ago, and recently have started having issues with the tool change stalling out on sequence 4. Under diagnostics it will show the "15711 switching to TS axis is not complete". I can power off the controller and back on, then I hear a click of what i assume is the pin locking the magazine wheel back. Then it will change tools again, and might run a program a few times before stalling out again with the same error. It is always cleared with restarting the controller, but will happen randomly. It seems to be where the tool changer is supposed to swing the pot down vertically where it stops. Thanks for any advice. I'm about to take delivery on another older okuma machine need to figure out how to work on these, the manuals seem of have 1000's of pages, but no troubleshooting.

    Sorry I posted this in the atc section but didn’t look like there was much traffic there, sorry for the double post.

  2. #2
    Join Date
    Nov 2022
    Also, I noticed the actual position on the TS axis does not go back to zero when the error occurs. It will be .095-.12

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