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Thread: Is the voltage going to my servos only 60 volts?

  1. #1
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    Is the voltage going to my servos only 60 volts?

    On my Hurco KM3P, the info for the motors says rated at 90VDC @ 12 amps continuous & 20 amps peak.

    While looking at the schematic for the air powered items, I noticed the transformer that feeds the servo power says 60volts output. Is there some kind of booster or capacitor/amp that brings it up to 90 volts?


    If this is what is going to the servo motors, that means I could use a servo amp that is rated at 80 volts & 20 amps.< Is this correct?

    The amps I ordered (160 volts & 35 amps), have been back-ordered for over a month.

    If the 80 volts & 20 amp would work, I could get started right now.

    These smaller amps have an optional *braking resistor* for when the servo coasts down and generates higher voltage.

    Also the smaller amps are $70 each cheaper .

    Thanks for the help,

    JAckal

    PS: If anyone wants to see the schematic I am referencing to, I will post a scan of it.
    Everything is bio-degradable, if you run over it enough times with the lawnmower.


  2. #2
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    Once the 60v AC is fully rectified and smoothed with a capacitor, the voltage will be higher than the average of the AC voltage by a factor of 1.414
    The 60v AC will become 60 x 1.414 = 84.84 vDC


  3. #3
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    Thanks bloke,

    You are good!!!

    JAckal
    Everything is bio-degradable, if you run over it enough times with the lawnmower.


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