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  1. #1
    Join Date
    Jun 2009
    Posts
    2

    Meldas 64 alarm tool head over heating

    Hi

    I have a machine equipped with meldas 64 from mitsubishi, now appear alarm 20 tool head over heating, i can´t find this alarm in to manual machine or in electrical scheme.

    anyone can help me

    Paulo Soares

  2. #2
    Join Date
    Jan 2011
    Posts
    0
    Is this a PLC alarm, or a CNC alarm? What is the machine manufacture?

    A CNC alarm appears in the upper portion of the Diagnostics screen.

    If it's a CNC alarm, #0020 is related to refernce point return. You must
    perform a reference point return (G28) on all axes to continue.

    If it's a PLC alarm, and the text states tool head overheating, there is most
    likely a sensor that's correctly or incorrectly reporting this condition.

    If you have the schematic, you might look for wiring that comes from the
    Spindle motor and goes into the cabinet relays. If the relays or patch panels
    are labeled, you can perhaps find which input device (X00 - XFF) is high and force off.

    It sound to me like it's a PLC problem, and if you do not have the ladder diagram, it may be difficult to trace.

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