Results 1 to 5 of 5

Thread: Driving a 4 pole ac servo with a 6 pole drive

  1. #1
    Registered
    Join Date
    Feb 2004
    Location
    Edison, NJ
    Posts
    35
    Downloads
    0
    Uploads
    0

    Driving a 4 pole ac servo with a 6 pole drive

    I was wondering if it is at all possible to drive a 4 pole ac servo with a drive designed for a 6 pole motor. I have everything all hooked up and the motor just jitters. The motor is a baldor bsm80b ac servo, and the drive is an emerson fx-316 drive. The drive can't be set up for 4 poles as far as I know. Is there any trick to fool the drive?? I don't need any positional accuracy. Just want it to spin.


  2. #2
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,952
    Downloads
    0
    Uploads
    0
    Usually the drive is set for 60 degree phasing or 120 deg phasing and the commutation is taken care of by the hall effect or resolver sensor. Do you have the phasing right (motor phases) ?
    Al
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

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


  3. #3
    Registered
    Join Date
    Feb 2004
    Location
    Edison, NJ
    Posts
    35
    Downloads
    0
    Uploads
    0
    I think I have the phasing right. Is there any way to check this? The servo leads are U,V,W, and R,S,T on the drive. Don't think they will match in order since they are different manuf.


  4. #4
    Community Moderator Al_The_Man's Avatar
    Join Date
    Dec 2003
    Location
    Canada
    Posts
    18,952
    Downloads
    0
    Uploads
    0
    What type of feedback do the Baldor use? Hall effect switches? they need to be phased correctly with the motor windings.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

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


  • #5
    Registered
    Join Date
    Feb 2004
    Location
    Edison, NJ
    Posts
    35
    Downloads
    0
    Uploads
    0
    They use resolver feedback, and I aligned it as they recomend(emerson) for their drive. Wired the phases up all 6 different ways and still nothing.


  • Similar Threads

    1. Using surplus servo motors as spindle drive
      By Swede in forum Servo Motors and Drives
      Replies: 11
      Last Post: 03-16-2008, 09:05 AM
    2. Where can I find Detail Specs Servo & Drive MEans ?
      By Calico in forum Servo Motors and Drives
      Replies: 1
      Last Post: 02-28-2005, 12:37 PM
    3. Brushed servo drive replacement
      By motordude in forum General Electronics Discussion
      Replies: 3
      Last Post: 07-06-2004, 02:09 PM
    4. Cheap 0 Clifton and servo drive selection (advice needed)
      By Konstantin in forum General Electronics Discussion
      Replies: 4
      Last Post: 04-14-2004, 11:21 AM
    5. R90H Servo Drive
      By Verboten in forum Servo Drives
      Replies: 16
      Last Post: 03-30-2004, 10:10 PM

    Posting Permissions


     


    About CNCzone.com

      We are the largest and most active discussion forum from DIY CNC Machines to the Cad/Cam software to run them. The site is 100% free to join and use, so join today!

    Follow us on

    Facebook Dribbble RSS Feed


    Search Engine Friendly URLs by vBSEO ©2011, Crawlability, Inc.