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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > Fanuc Powermate D Alarm 414 (LV5V Control Power Low Alarm)
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  1. #1
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    Oct 2012
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    Fanuc Powermate D Alarm 414 (LV5V Control Power Low Alarm)

    I have a Fanuc Powermate D getting Alarm 414 (Digital Servo System is Abnormal).

    Diagnostic #0200:
    X: 0 1 0 1 1 0 0 0
    U: 0 1 0 0 0 0 0 0

    According to the manual, the diagnostics above tell me that the X & U axis have low voltage.

    The servo for the X & U axis (A06B-6066-H233) is displaying "2" on the LED alarm display. This would mean that I have an LV5V Control Power Low Alarm. +5 of control power is abnormally low.

    We measured about 4.8ish volts. Do you think this is too low? I would think anything over 4.75V would be fine.

    Does anyone got any ideas for us? How do we adjust the voltage to get exactly 5.0V? Is the servo amplifier faulty?
    Attached Thumbnails Attached Thumbnails DGN200.jpg   Alarm Message - 414 Servo Alarm.jpg  
    Attached Files Attached Files

  2. #2
    Join Date
    Feb 2009
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    6028
    Quote Originally Posted by james.e.raymond View Post
    I have a Fanuc Powermate D getting Alarm 414 (Digital Servo System is Abnormal).

    Diagnostic #0200:
    X: 0 1 0 1 0 0 0 0
    U: 0 1 0 0 0 0 0 0

    According to the manual, the diagnostics above tell me that the X & U axis have low voltage.

    The servo for the X & U axis (A06B-6066-H233) is displaying "2" on the LED alarm display. This would mean that I have an LV5V Control Power Low Alarm. +5 of control power is abnormally low.

    We measured about 4.8ish volts. Do you think this is too low? I would think anything over 4.75V would be fine.

    Does anyone got any ideas for us? How do we adjust the voltage to get exactly 5.0V? Is the servo amplifier faulty?
    Since I can't seem to figure out how to reply without the quote....
    I'd be more concerned about the HV ( high voltage) and HC (high current) on the X axis. Think you lost the X axis drive.

  3. #3
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    Oct 2012
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    Yes I do have an "Abnormal Current Alarm" too. But shouldnt I get an "8" on the LED display (instead of a "2") if that was the causing the problem? Any other way of determiening if the drive is gone? Thanks for the help

  4. #4
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    Oct 2012
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    Also I just noticed that I took two pictures about 10 minutes apart and one aso had the "Over Current Alarm" and the other picture did not. Do you think the combination of the LV, HVA, HCA means that the drive is gone?

  5. #5
    Join Date
    Feb 2009
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    6028
    Tough to say.
    Does this alarm come up as soon as you power on the machine?
    Have you disconnected the motor cables and see if the alarm changes?
    Have you swapped drives between the axis and does it follow the drive?

  6. #6
    Join Date
    Oct 2012
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    Yes the alarm appears ass soon as we power on the machine.
    We have not tried discconecting anything or swapping any drives

  7. #7
    Join Date
    Oct 2012
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    We replaced the drive and everything is back to normal. Thanks for the help.

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