584,802 active members*
4,860 visitors online*
Register for free
Login
IndustryArena Forum > CNC Electronics > Stepper Motors / Drives > NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful
Results 1 to 6 of 6
  1. #1
    Join Date
    Jun 2018
    Posts
    9

    Question NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful

    Hows it going everyone !

    Thanks for tanking the time to read my post. At higher RMP's the stepper NEMA 34 Stepper motor seems to run just fine. But at lower RMP's (500mm/s) natural frequency of the stepper motor seems to resonate throughout the machine. It sounds like it is going to vibrate itself apart. It just sounds wrong. The stepper motor is coupled to a threaded rod. I dont know if thats what is causing this really strange noise but I am assuming that something is wrong with the stepper motor driver. If any one knows a good source to learn about these kind of stepper motor drivers that would be super helpful.


    Happy Friday !!

  2. #2
    Join Date
    Dec 2013
    Posts
    5717

    Re: NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful

    Sounds like it's hitting the natural resonant frequency of the mechanical system. You might try changing the micro stepping to a different value.
    Jim Dawson
    Sandy, Oregon, USA

  3. #3
    Join Date
    Jun 2009
    Posts
    251

    Re: NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful

    Try at least 1/8 or 1/16 miceostepping, that will make them much smoother.

  4. #4
    Join Date
    Jan 2018
    Posts
    1516

    Re: NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful

    I've got the same issue with my 1600oz on the Z at 1100mm/min and over. Stalls at 1400mm.
    If I put an 1100oz on it it's fine up to 2000mm/min before stalling.
    1100 are 4.1mh and 1600 is 5.5mh inductance running on 60v so technically they are a little under powered.

    I'll try messing with settings too. At the moment I've got it set at 2000rev/400step for a 5mm pitch screw which I guess is microstepping at 1/5th?

  5. #5
    Join Date
    May 2015
    Posts
    684

    Re: NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful

    a 5:1 Reduction drive would make a big difference as it would move the rpm out of that resonance range.
    Rod Webster
    www.vehiclemods.net.au

  6. #6
    Join Date
    May 2014
    Posts
    182

    Re: NEMA 34 and DM860A. Low Speeds Stepper Motor Sounds Awful

    What stepper driver are you using to drive these motors?

    Agreed with the above for increasing microstepping value.

Similar Threads

  1. Nema 17 Stepper motor on Nema 23 driver
    By Thomas T in forum Laser Engraving / Cutting Machine General Topics
    Replies: 6
    Last Post: 10-21-2014, 08:59 AM
  2. Nema 34HST9805-37 and DM860A Driver
    By Dan911 in forum Stepper Motors / Drives
    Replies: 21
    Last Post: 10-02-2014, 04:33 PM
  3. 4 axis Nema 34, DM860A wiring help
    By speeddemon974 in forum Stepper Motors / Drives
    Replies: 1
    Last Post: 12-09-2012, 03:14 PM
  4. Stepper motor sounds and clicking
    By Sanghera in forum Stepper Motors / Drives
    Replies: 16
    Last Post: 11-07-2004, 06:42 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •