Welcome to Our Community

Some features disabled for guests. Register Today.

Y axis not syching at random.

Discussion in 'Motors' started by Delco, Nov 29, 2018.

  1. Delco

    Delco New
    Builder

    Joined:
    Oct 23, 2018
    Messages:
    2
    Likes Received:
    0
    Hi , just finished a leadscrew 1000x1000 workbee build using nema23 motors , Arduino uno , protoneer shield with drv8825 drivers.

    it seems to sometimes have one y Stepper lag behind when jogging , it doesn't happen everytime but mostly if I do a large 100mm jog.
    I have set driver current to 0.9v running a 24V power supply , this is where they seem happy and quiet , I had it at 1.4V but the motors would not drive properly . I can up the power supply to 36V , would that help ?

    Motor specs
    • Step Angle:1.8°
    • Rated current:2.8A DC
    • Rated Voltage: 3.36V
    • Winding dc resistance(25℃):1.2Ω±10%
    • Winding inductance:2.3mH±20%
    • Holding torque:≥1.26N.m
    • Shaft diamater: 6.35mm or 1/4″
     
  2. Giarc

    Giarc Master
    Moderator Builder

    Joined:
    Jan 24, 2015
    Messages:
    954
    Likes Received:
    464
    I had problems with my DRV8825s due to overheating. They would lose steps on larger jobs. Are you cooling them real well with a fan, or fans?
     
  3. Daniel Collins

    Builder

    Joined:
    Oct 17, 2018
    Messages:
    3
    Likes Received:
    0
    Problem temporarily resolved dropped ref voltage to 0.8v and added better cooling fan .
    Think i need to reconsider the drv8825s and find a better stepper driver solution .
     
  4. Giarc

    Giarc Master
    Moderator Builder

    Joined:
    Jan 24, 2015
    Messages:
    954
    Likes Received:
    464
    I switched to the DQ542MA drivers and have not looked back. My fear was that I would be running a long job and at 90% complete they would overheat on me. For the DQ542MA drivers I used an arduino screw shield to make the driver hookups easier.
     
  5. Delco

    Delco New
    Builder

    Joined:
    Oct 23, 2018
    Messages:
    2
    Likes Received:
    0
    Thinking about going to the tb6600 drivers , cheap and can still hookup to my protoneer shield . did a 6 hr test cutting air last night, cooling made a big difference no steps lost but I am also worried about long term , its running at a lot lower current than is desirable.
     
  6. Giarc

    Giarc Master
    Moderator Builder

    Joined:
    Jan 24, 2015
    Messages:
    954
    Likes Received:
    464
    I believe others have used those with success. Here is a post/thread that may help you. Stepper motor won't move, any suggestions? (Solved)
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice