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IndustryArena Forum > MetalWorking Machines > Okuma > only half spindle speed
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  1. #1

    Join Date
    May 2021
    Posts
    2

    only half spindle speed

    Hi guys,
    i have an okuma LB15 with osp5000 control.

    If i set a spindle speed it will run only at half rpm. The maximum it reaches is 1400 rpm. I checked the 2 gears and they work fine, the tachometer is already new and shows the right rpm. The machine has no erros or fault codes, everything seems to work fine except the spindle speed. There is no g50 speedlimit command, i checked that too.
    I don´t know what to do next. I called some technicians, but nobody has a clue.
    Maybe you guys have an idea for me what the problem could be.

    Thank you
    greetings
    giovanni

  2. #2
    Registered
    Join Date
    Mar 2009
    Posts
    1481

    Re: only half spindle speed

    There is the parameter for speed limit also.
    How do you check:
    There is no g50 speedlimit command
    ?

  3. #3

    Join Date
    May 2021
    Posts
    2
    Quote Originally Posted by Algirdas View Post
    There is the parameter for speed limit also.
    How do you check: ?
    I just look in the program i load if the g50 is set high enough. Where do i find the parameter for speed limit you are talking about?

  4. #4
    Registered
    Join Date
    Apr 2006
    Posts
    105

    Re: only half spindle speed

    you seem to have checked all of them . Did Your machine reloaded system software?


    Sent from my iPhone using Tapatalk

  5. #5

    Re: only half spindle speed

    Have you checked the gear ratio parameter setting

    Quote Originally Posted by bulburn View Post
    Hi guys,
    i have an okuma LB15 with osp5000 control.

    If i set a spindle speed it will run only at half rpm. The maximum it reaches is 1400 rpm. I checked the 2 gears and they work fine, the tachometer is already new and shows the right rpm. The machine has no erros or fault codes, everything seems to work fine except the spindle speed. There is no g50 speedlimit command, i checked that too.
    I don´t know what to do next. I called some technicians, but nobody has a clue.
    Maybe you guys have an idea for me what the problem could be.

    Thank you
    greetings
    giovanni
    http://cncmakers.com/cnc/controllers/CNC_Controller_System/CNC_Retrofit_Package.html

  6. #6
    Registered
    Join Date
    Mar 2009
    Posts
    1481

    Re: only half spindle speed

    What about spindle speed override?
    Check if the spindle speed is possible to change using the spindle speed override knob.

  7. #7
    Registered
    Join Date
    Apr 2006
    Posts
    779

    Re: only half spindle speed

    Try setting your max spindle speed with the G50 Zxxxx where xxxx is your maximum spindle speed.
    You stated that there was no G50 specified, but you may have a situation where a previous setting is still in place and by re-entering the new limit, it may reset the maximum RPM.
    Don't forget to also set your high gear range, usually M42 for that machine.
    Worth a try.
    Cheers
    Brian.

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