Solved Engines get very warm?!
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Hello again,
Engines get very warm, does anyone have any tips on what I can do to keep the engines from getting so hot?
I use the motors (see Datasheet) with 48 V, the load to be moved is 1.8 kg.M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X160.00 Y160.00 Z160.00 E690.00 ; set steps per mm M566 X1200.00 Y1200.00 Z1200.00 E600.00 ; set maximum instantaneous speed changes (mm/min) M203 X18000.00 Y18000.00 Z18000.00 E7200.00 ; set maximum speeds (mm/min) M201 X1000.00 Y1000.00 Z1000.00 E3000.00 ; set accelerations (mm/s^2) M906 X1800:1800 Y1800:1800 Z1800:1800 E1200 I80 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeouthttps://www.act-motor.com/two-phase-four-phase-hybrid-stepper-motor-17hm-product/
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@tkln you're running 800mA motors at 1800mA, i'm not surprised they get hot.
Run them at 80% of max, which is 640mA.
If you need more torque you'll have to change your motors -
undefined tkln has marked this topic as solved
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@jay_s_uk
On the manufacturer side it is said that the motors are have a rated current of 2.4 A. But I think your right , thanks
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@tkln it could be a mistake on the datasheet i suppose.
how hot are you talking? too hot to touch? -
@jay_s_uk after a benchy it is like 50 -55 °C
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@tkln in that case you may be ok with what you're driving them at. if they were too hot to touch i would be concerned but steppers do get hot
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@tkln it appears from that table that the last two digits of the motor model number are the rated current in tenths of an amp. Also the combination of 0.8A current alongside 0.8 ohm resistance and 1.8mH inductance doesn't make sense. So I suspect the datasheet is wrong.
At full rated current, stepper motors typically reach at least 80C. 55C for your motors is OK as long as they are not in contact with PLA printed parts.
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