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  1. #1
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    Jul 2015
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    FANUC 18 ALARMS 306,350 AND 351

    HI, IAM NEW HERE, AND NEED URGENT HELP WITH A SUPERMAX FV 56 VMC, IT HAVE A FANUC 18 AND A APC CONECTION WIRE WAS BROKEN,, SINCE THAT MOMENT
    I HAVE THIS ALARMS: 300 APC ALARM : X AXIS NEED ZERO RETURN
    300 APC ALARM : Y AXIS NEED ZERO RETURN
    306 APC ALARM : X AXIS BATTERY ZERO
    350 SPC ALARM : X AXIS PULSE CODER
    351 SPC ALARM : X AXIS COMUNICATION,
    I checked the axis drives and whe i start the machine stay on no ready.
    can anybody help me
    thanks .

  2. #2
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    Dec 2008
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    Re: FANUC 18 ALARMS 306,350 AND 351

    Battery replacement required
    - change them while powered up

  3. #3
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    Re: FANUC 18 ALARMS 306,350 AND 351

    Quote Originally Posted by Superman View Post
    Battery replacement required
    - change them while powered up
    THANKS SUPERMAN FOR YOUR ANSWER, BUT checked the batteries and they are ok, but still have the alarms. can you help?
    thanks

  4. #4
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    Aug 2012
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    Re: FANUC 18 ALARMS 306,350 AND 351

    Good day
    The alarm tells you that your x - axis encoder cable or the encoder is faulty.
    99% CERTAIN IT IS YOUR CABLE AS IT MOVES WITH THE MACHINE.
    Replace or repair the cable .
    Then you need to set up the home positions in x and y as they are on the same drive and the batt. shorted and lost both positions.
    This is setted on parameter 1815.
    If you do not know how , ask and you shall receive !!!!!
    Good luck

  5. #5
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    Apr 2003
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    Re: FANUC 18 ALARMS 306,350 AND 351

    Quote Originally Posted by GERASOLVERA View Post
    THANKS SUPERMAN FOR YOUR ANSWER, BUT checked the batteries and they are ok, but still have the alarms. can you help?
    thanks
    Hi ,
    one of the drives are faulty.... I used to have this too...

    When you turn the machine on... look at the modules (fanuc) if all of them lights up with led at the top...
    If one dont then wait for 20 secs turn power off and on again....

    this is usually capacitors and some components dont activate fast enough but I have this for 4 years and machine is still running fine!


    mike

  6. #6
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    Nov 2007
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    238

    Re: FANUC 18 ALARMS 306,350 AND 351

    Your biggest problem there is your communication Alarm
    Without communication between Drive and motor CPU it has know idea about the other condition's
    Have the Drive got an Alarm at all ?

  7. #7
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    Sep 2016
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    Replying for others searching for their problem.
    I had same alarms on my 18t controller. Turned out to be bad x axis encoder. Would work and sporadically alarm out. Encoder was shorting out and sucking batteries dead. Replaced x encoder and installed new batteries. All good.


    Quote Originally Posted by GERASOLVERA View Post
    HI, IAM NEW HERE, AND NEED URGENT HELP WITH A SUPERMAX FV 56 VMC, IT HAVE A FANUC 18 AND A APC CONECTION WIRE WAS BROKEN,, SINCE THAT MOMENT
    I HAVE THIS ALARMS: 300 APC ALARM : X AXIS NEED ZERO RETURN
    300 APC ALARM : Y AXIS NEED ZERO RETURN
    306 APC ALARM : X AXIS BATTERY ZERO
    350 SPC ALARM : X AXIS PULSE CODER
    351 SPC ALARM : X AXIS COMUNICATION,
    I checked the axis drives and whe i start the machine stay on no ready.
    can anybody help me
    thanks .

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