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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > Alarm 2 on A06B 6079 H201 servo drive
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  1. #1
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    Alarm 2 on A06B 6079 H201 servo drive

    Hi, I have got a machine with an alarm number 2 on the A06B 6079 H201 servo drive which does not appear if I turn the machine on without connectors JX1A and JX1B connected. If I connect either one it will start up with the alarm 2. Both servos and encoders are connected so I am assuming there is not an issue with them. My main question is does anybody know if this is a servo drive fault or could it be something else? I have attached a couple of photos to show the issue.

    Thank you

    Attachment 419366Attachment 419368

  2. #2

    Re: Alarm 2 on A06B 6079 H201 servo drive

    The problem you have is within the servo amp and is quite common on the 6079 series.

  3. #3
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    Re: Alarm 2 on A06B 6079 H201 servo drive

    Hi Tristarcnc. Thanks for the reply. I have checked the capacitors and replaced the 621 opto, c4151 transistor but had no affect. There is a 15v regulator which I haven’t checked yet. As it’s the 5v supply that’s the issue (I think) would you mind pointing me in the right direction.

    Thank you

  4. #4
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    Re: Alarm 2 on A06B 6079 H201 servo drive

    What machine is it on ?

  5. #5
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    Quote Originally Posted by mbservice View Post
    What machine is it on ?
    Hi. It’s a Fanuc Robocut Alpha 0-C with a 16-WC control. It’s new to me and was purchased knowing it had this fault.

    Thanks

  6. #6
    Quote Originally Posted by tristarcnc View Post
    The problem you have is within the servo amp and is quite common on the 6079 series.
    Merhaba bende ayn? alarm? çözmeye çal???yorum. IPM mi drgi?tirmem laz?m. Nas?l tamir edebilirim.

  7. #7

    Re: Alarm 2 on A06B 6079 H201 servo drive

    Quote Originally Posted by Lomach View Post
    Hi. It’s a Fanuc Robocut Alpha 0-C with a 16-WC control. It’s new to me and was purchased knowing it had this fault.

    Thanks
    Hello, how did you repair that? I have similar failures in my drive. It says low voltage in the manual, but its the only servodrive where I have that problem so its not a voltage input problem.
    Thanks

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