Partial Answer Extruder stepper motor hot

just a general question cause I haven't noticed it before but is it normal for the extruder stepper motor to get hot while printing long prints?

 

Yeah. It's normal. As long as it's not overheating. They do get pretty warm. You can add some heatsinks to it if you want

 

ok, thank you

 

Yea, on a recent 10 hour run, I did notice it was warm, but not actually hot. I could lay my hand on it with no great discomfort.

 

I dont think a motor should run hot. Warm is ok, hot is not.

If your motor is getting hot, than it might recieve too much currency from the stepperdriver. Measure the currency it gives to the motor, it should be around 500mv - 700mv. By default the value can be set to max (1700mv or even more) and that will eventually lead to a broken motor.

So do some measuring please.

 

Ok, so I'm getting a little worried. Did a 13 hour print today, turned out great but noticed the stepper motor was real hot. I have the feeling I will be leaving how to switch out the motor soon. Where is the best place to get an accurate reading for currency and if too high, how do I change it? How difficult is it to change out a motor?

 

Check this tutorial on YouTube. It's really simple. All you need is a multimeter.



Changing a stepper only requires to unscrew 4 screws and a connector on you stepperdriver.

Trimming back the current will work just fine. I have 500mV on x and y. 710 on z.

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Thank you for the help

 

You marked the threat as solved. Please tell what was wrong and what you did to solve. People with the same problem will be grateful.

 

I marked it solved a month ago. I just asked if it was normal for the stepper motor to get warm an was answered yes so I marked solved. Yesterday motor was very hot so I revisited my original post. I have not been able to follow the instructions on the YouTube vid yet but as soon as I do I will update but I can not change back to unsolved once marked solved

 

Ah, looking forward to see your findings.

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The only danger of running hot is that it might skip steps and cause under extrusion. You won't risk permanent damage to the motor.

The magnets will demagnetize due to temps above 80C causing it to skip steps. Once it cools back down everything will go back to normal.

 

An update, checked readings. All axis read between 411-422 accept one, read 697 so i adjusted it to 412. I will run a print hopefully tomorrow to see if that was it

 

697 is not a weird or high value at all. Clearly, the current is not your problem.