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Thread: fanuc 6m has system error 402

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  1. 01-23-2008, 02:31 PM #1
    runlean
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    fanuc 6m has system error 402

    When I turn on the control the CRT reads system error 402. I can not change to any other screens i do not think it is on the alarm screen. Was running find when I shut it off.
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  2. 01-23-2008, 02:57 PM #2
    Dan Fritz
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    There is no alarm 402 that I can find on the 6M. Could that be alarm 602 or 902 ?
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  3. 01-23-2008, 03:11 PM #3
    runlean
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    It is a "system error" 402
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  4. 01-23-2008, 03:41 PM #4
    Dan Fritz
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    Found it. The 402 alarm is a 4th axis overload alarm. Do you have a 4th axis? If not, then the option parameter for the 4th axis somehow got turned on, so now it's sensing an overload for a servo that's not there.

    If you have a 4th axis, push the little RESET button on the back of the servo. Also, check the 4th axis cables to see that they're all connected properly.
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  5. 01-23-2008, 03:53 PM #5
    runlean
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    It is wired for a 4th axis but I have never use the 4th axis.
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  6. 01-23-2008, 03:59 PM #6
    runlean
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    It is wired for a 4th axis but I have never used the 4th axis.
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