GROSS POSITIONING ERROR S B Alarm


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Thread: GROSS POSITIONING ERROR S B Alarm

  1. #1
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    Default GROSS POSITIONING ERROR S B Alarm

    Guys
    have a problem on a Bridgeport VMC 760 milling machine,keep getting the alarm GROSS POSITIONING ERROR S B when try to run the spindle or do a tool change,
    Its a Heidenhain control with seimens drives and motors

    any help appreceiated

    Cheers

    Taza

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  2. #2
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    GROSS POSITIOINING ERROR <AXIS> B: The nominal voltage calculated by the control has reached its limit of ± 10 V (only with feed precontrol).
    When this error message is generated, the error may be located in any element of the closed loop. e.g.
    - Control error (e.g. CLP board)
    - Excessive offset voltage at the servo amplifier
    - Monitoring function of the servo amplifier has responded (e.g. power monitoring)
    - Servo amplifier defective
    - Motor, tachometer, encoder or cables defective
    - Mechanical defect (bearings, spindle, guides)
    - Excessive mechanical forces on a drive



  3. #3
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    Default Re: GROSS POSITIONING ERROR S B Alarm

    Did anyone get to the bottom of this one?

    I have the same problem on my 760. When you start the spindle it goes solid but will not rotate.
    I get the error only on the first tool change attempt then no errors on the screen or the drive amp or power supply.

    Thanks.



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