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IndustryArena Forum > Machine Controllers Software and Solutions > Fanuc > FANUC AC SERVO DRIVE: KYOSAN KS100FN1
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  1. #1
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    Dec 2021
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    FANUC AC SERVO DRIVE: KYOSAN KS100FN1

    Hello!
    In the search for the cause of LED ALARM 8 (OT108 24VDC voltage too high) from our Fanuc Servo Drive, it turned out that the power supply KYOSAN KS100FN1 is sending the wrong AC voltage to the Fanuc circuit board.
    Does anyone know which AC voltage must be applied to the two white lines (frequency?) Does anyone have a circuit diagram of the circuit board?
    Would be grateful for any help!
    Attached Thumbnails Attached Thumbnails 1.JPG   3.JPG   2.JPG  

  2. #2

    Join Date
    Jun 2021
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    20

    Re: FANUC AC SERVO DRIVE: KYOSAN KS100FN1

    What is the port name on the servo drive unit? What is the part number of the servo drive? What voltage is that power supply sending?

    I’m assuming the port is CXA2A and it’s supplying +120VAC which, again an assumption, probably shouldn’t fluctuate +/-10%.

    If you look on the flap that goes over the DC link bus, it should have the servo part number as well as the part number for a description manual for that drive unit

  3. #3
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    Dec 2021
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    12

    Re: FANUC AC SERVO DRIVE: KYOSAN KS100FN1

    Hello bumzag, Thanks for the answer. The type designation is A06B-6054-H030.

  4. #4
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    Join Date
    Dec 2021
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    12

    Re: FANUC AC SERVO DRIVE: KYOSAN KS100FN1

    The machine works again. 3 fuses (150A) on the Fanuc Servo Drive were defective.

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