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Acro stepper motors getting hot

Discussion in 'Motors' started by roses, Jan 21, 2020.

  1. roses

    roses New
    Builder

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    Hi All,

    I have an Acro 1510 that I recently set up and the steppers get quite hot after an hour of use. How hot? >> about as hot as a mug warmer... too hot to hold for more than a few seconds but not hot enough to soften the acrylic gantry plates :)

    Do I need to adjust the current going from the blackbox controller to the steppers? I'm currently running it with the defaults.

    Thanks!
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Project Maker Builder Resident Builder

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    Ideally adjusting the current is a step in the commissioning process: OpenBuilds BlackBox 4X Documentation but do note some warmth is normal, when the motor sits idle in the braked condition the coils stay powered. Heat is OK, too much is not. But for an Acro, you can usually turn it down quite a bit, as its not a very heavy gantry. Just turn current high enough that you can get the top speeds you use often without stalling
     
    roses likes this.
  3. roses

    roses New
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    Thanks! I just ran a few tests, dialed each of the motors down to their minimum current and they are operating fine, a bit quieter and a lot cooler.
     
    Peter Van Der Walt likes this.

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