Very Hot Z axis motor  

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carl.c
(@carl-c)
New Member

I have a Mk2 that runs great, however the left Z motor always stays Hot even when not printing.  Comparing the two Z motors the Left one is about 47deg, but the right one is only 36deg.  Has anyone else noticed that one of their Z motors gets much hotter than the other?  Is this a mechanical issue where the motor is slightly binding, or do I have a issue developing that I need to fix before failure?

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Posted : 31/07/2020 4:36 pm
clemens.m
(@clemens-m)
Estimable Member

Sorry for not beeing able to help - I have two printers in i3 style - on both of them the two steppers for z axes have more or less the same temperature. Are yours still the original steppers from Prusa or was one of them replaced? As I know both of these steppers are controlled from the same controller - they are conneced in parallel so I don´t unterstand why one is becomming hotter than the other.

Best regards, Clemens

Posted : 02/08/2020 1:04 pm
Karl Herbert
(@karl-herbert)
Famed Member
Posted by: @carl-c

I have a Mk2 that runs great, however the left Z motor always stays Hot even when not printing.  Comparing the two Z motors the Left one is about 47deg, but the right one is only 36deg.  Has anyone else noticed that one of their Z motors gets much hotter than the other?  Is this a mechanical issue where the motor is slightly binding, or do I have a issue developing that I need to fix before failure?

Try changing the stepper plugs. If the left side still gets warm, there is probably a faulty driver or wrong FW settings, otherwise the stepper is not wired correctly or damaged.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 02/08/2020 1:53 pm
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