AC Servo motors, are they all three phase?


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Thread: AC Servo motors, are they all three phase?

  1. #1
    Member csreades's Avatar
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    Default AC Servo motors, are they all three phase?

    I have been looking at getting a couple of servo motors for a system I am putting together. I am interested in 1000W version of this series of AC servo drive.

    https://www.damencnc.com/userdata/fi...glish_2018.pdf

    To me the manual is a little ambiguous on the required power. It has single phase AC for control, and three phase for motor drive. However the way it is written makes me think that it might be optional and not required?

    If I am wrong here, am I fundamentally looking for something impossible, AC servo on single phase power?

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    Community Moderator ger21's Avatar
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    Default Re: AC Servo motors, are they all three phase?

    See page 3-4.
    You can run models 1.5Kw and less on single phase.

    Gerry

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    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Community Moderator Al_The_Man's Avatar
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    Default Re: AC Servo motors, are they all three phase?

    Quote Originally Posted by csreades View Post
    If I am wrong here, am I fundamentally looking for something impossible, AC servo on single phase power?
    Most AC, BLDC, ECM motors are fed from power of 1ph origin, but as Gerry pointed out, to obtain a smoother, more efficient DC power supply when running the larger versions of motors, 3ph is required or optional.
    IOW, The 3ph or BLDC servo power is derived from a DC supply.
    Al.

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    Community Moderator Al_The_Man's Avatar
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    Default Re: AC Servo motors, are they all three phase?

    Incidentally the BLDC motor is constructed identically to the 3ph version, just the means of commutation and operation is different, the BLDC has only 2 winding's connected at any one time, as opposed to the 3ph three winding connection.
    Each can be turned into the other quite easily.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design

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    Member csreades's Avatar
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    Default Re: AC Servo motors, are they all three phase?

    Thank you both for the really helpful replies. And apologies it seems I did not read the manual very well!



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    Member cncmakers001's Avatar
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    Default Re: AC Servo motors, are they all three phase?

    Quote Originally Posted by csreades View Post
    I have been looking at getting a couple of servo motors for a system I am putting together. I am interested in 1000W version of this series of AC servo drive.

    https://www.damencnc.com/userdata/fi...glish_2018.pdf

    To me the manual is a little ambiguous on the required power. It has single phase AC for control, and three phase for motor drive. However the way it is written makes me think that it might be optional and not required?

    If I am wrong here, am I fundamentally looking for something impossible, AC servo on single phase power?

    For motor equal or less than 1 KW, some brands can make both single phase or three phase, it is optional.

    http://cncmakers.com/cnc/controllers/CNC_Controller_System/CNC_Retrofit_Package.html


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AC Servo motors, are they all three phase?

AC Servo motors, are they all three phase?

AC Servo motors, are they all three phase?