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IndustryArena Forum > CNC Electronics > General CNC Machine Related Electronics > How to drive Analog Servo Input +/- 10V
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  1. #1
    Member
    Join Date
    Apr 2007
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    28

    How to drive Analog Servo Input +/- 10V

    What drives an Analog velocity signal in a servo amp?
    Can this be done directly from the computer, Program an IC?
    or otherwise?
    How do I deal with the motor encoder outputs to drive an analog velocity signal from the computer?
    Hope someone can help?
    Thanks in Advance

  2. #2
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Posts
    23173
    To use a PC you generally need a motion card or other with analogue output. The loop is closed back to the motion card via the cards encoder input.
    If you use a software based control like mach etc, the signal to the drives is step & direction through the parallel port, so if you have analogue drives you need a S/D to analogue conversion I believe if you search here for Pixie it will show up.
    For an example of a closed Motion card look on the Galil Motion site.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

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