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Thread: fanuc 21iT.401 Alarm

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  1. 06-23-2007, 02:21 AM #1
    BKCOM
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    fanuc 21iT.401 Alarm

    Hi !
    Anybody help me with 401 alarm DRDY OFF
    Regard !
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  2. 06-28-2007, 04:04 AM #2
    L. Sakthivel
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    Are you having only 401 alarm or any other alarm available. If any other alarm available you should clear that first. If only 401 alarm, Check the Input voltage, control voltage & Emergency Relay
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  3. 11-14-2007, 03:48 PM #3
    segar
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    me too hving alrm 400 ,in fanuc OM ,when the machine on, with out operating ,how to reset yaa.
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  4. 11-15-2007, 09:39 AM #4
    viorel26
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    401 SERVO ALARM: n–th AXIS VRDY OFF

    1) The n–th (axis 1 or 2) servo amplifier ready signal (DRDY) went
    off. Check the servo amplifier.
    2) This alarm may occur if a servo amplifier is shared by several NC
    units.
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