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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > Disable overtravel alarm (regardless of control)
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  1. #1
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    Disable overtravel alarm (regardless of control)

    Heya.

    Is there any way to disable the most annoying overtravel alarms? I would like the axis to just stop, quietly.
    (In case it is control dependant, the particular control in my case is 18i)

    Thanks!

  2. #2
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    Re: Disable overtravel alarm (regardless of control)

    You should be able to set stored stroke limits that will just throw an 500# fault. Just back off the limit and reset. If you are hitting the hard limits, you need to set your parameters 1320 and 1321.

  3. #3
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    Re: Disable overtravel alarm (regardless of control)

    No, the annoying soft ot will always be there on a Fanuc.

    Sent from my A3-A20FHD using Tapatalk

  4. #4
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    Re: Disable overtravel alarm (regardless of control)

    I worked and programmed CNC machines for 30 years and hardly ever got OT alarms.
    Sure now and then, but it was always something stupid that I did that caused it. After
    you do it a few times you learn and then just don't do it, or do it right.
    you need to use and program the machine that way it was designed.
    what are you doing (wrong) that is giving you the alarm?
    is it manual or in-program?

  5. #5
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    Re: Disable overtravel alarm (regardless of control)

    It is a safety feature. Do not dislike it.

  6. #6
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    Re: Disable overtravel alarm (regardless of control)

    Set soft limits a few mm before hard limits, as already suggested. Hitting hard limits is indeed annoying.

  7. #7
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    Re: Disable overtravel alarm (regardless of control)

    Even the soft limit alarms are annoying. I hit them all the time when I'm doing metrology checks on Fanuc while setting up. Okuma is better for this, it just hits limit and stops. No alarms, no hitting reset.

    Sent from my A3-A20FHD using Tapatalk

  8. #8
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    Re: Disable overtravel alarm (regardless of control)

    it is easy in your 18i control to edit the ladder and take off the OT alarms from alarm list.
    if you do not have a password that protects the ladder from editing you can do it but before just back up it.

  9. #9
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    Re: Disable overtravel alarm (regardless of control)

    I believe that parameter 1301 bit 4 = 1 will cancel the alarm without resetting once you back off the soft OT.

  10. #10
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    Re: Disable overtravel alarm (regardless of control)

    OK, thank you everybody. Fordav11: The problem is that with our Fanuc lathe it is easy to hit the X+ limit due to the rather limited X-axis travel and when turning large workpieces with a tailstock it is just best to move the turret as far as possible before indexing (during manual set-up, quick tasks etc.). I'm not looking to *disable* the soft limits, but suppress the message (and the need for reset). Just like our machines with an Okuma control, they do not nag about the limits.

    Anyways, it's not like the end of the world

  11. #11
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    Re: Disable overtravel alarm (regardless of control)

    Did you try 1301#4 = 1, as suggested by Dcoupar?

  12. #12
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    Re: Disable overtravel alarm (regardless of control)

    I just read the answers, so will try it on monday and let you know

  13. #13
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    Re: Disable overtravel alarm (regardless of control)

    Quote Originally Posted by myhäje View Post
    I just read the answers, so will try it on monday and let you know
    And I wonder, what ever happened.?

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