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controller board cooling missing steps

Discussion in 'Controller Boards' started by Stephen Barnes, Nov 8, 2017.

  1. Stephen Barnes

    Stephen Barnes Well-Known
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    Hi i am having problems with my cnc its missings steps alot when i jog the machine sometimes its fine for a sec then misses steps on all axis tryed adjusting them still same problems i dont have cooling on my conroller could this be the problem? thanks
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    You'd first need to provide more info:

    What kind of controller
    What stepper drivers
    What motors
    What machine
    Current setting on stepper drivers
    Power Supply Voltage
     
  3. Stephen Barnes

    Stephen Barnes Well-Known
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    conroller : sparks concept xpro

    stepper drivers :unsure i am new to cnc

    stepper motor: 1.80 stepper motor ldo-57sth56-2804a150820LDO

    ox cnc 1500x1500

    setting on stepper drivers :unsure new to cnc

    Power supply voltage :220v

    Hope this helps i am a little stuck
     
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  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Power output side... 12v, 24v, etc?
     
  5. Stephen Barnes

    Stephen Barnes Well-Known
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    24v
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    How far did you turn the stepper current adjustment potentiometers? halfway? All the way? (full scale = 2.5A, so whereabouts did you set it? Halfway = 1.25A, 3/4= 1.875A
    Anything above 1.5A would need a fan blowing on the board
     
  7. Stephen Barnes

    Stephen Barnes Well-Known
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    there around around the half way mark i will get a fan on it and see how it goes
     
  8. Flash22

    Flash22 Veteran
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    your on the limit with the xpro with those motors without heat sinks and fans

    Taking a second look at those stepper motors they are not great, holding force is 12.6 kg-cm (1.24nm or 175 in oz)

    Imho for the size of machine (1500x1500) its very under spec'd I would go with 4 drivers (DM542 or DQ524MA) and some steppers over 250 in oz - on the x and y, psu wise 24 or 36v anything over 350w (14 amp) there a bit more pricey but Meanwell make some decent power supplies

    Control wise you can go the mach3 or grbl route

    If you look on the ooznest site you can see the pic's with the 2 fans over the xpro board

    OX CNC Full Kit | Everything For A Hobby CNC Machine
     
  9. Stephen Barnes

    Stephen Barnes Well-Known
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    do these settings look ok?
     

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