NEMA 11 stepper motor, one phase down
Posted by evandene
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NEMA 11 stepper motor, one phase down March 26, 2019 06:23AM |
Just to share my mistake 
For my dual extruder I use NEMA 11 stepper motors, 0.67 Amp/phase. ( [www.thingiverse.com] )
These light stepper motors can easy go down when powered with a higher current as specified. Per mistake I fired one up with 1.5 amp and immediately one phase was gone.
When it happens you can conclude this by measuring the resistance from the 2 phases. (see motor spec) Both phases should be close to equal. Mine should be 6 ohm and measured 2.3 and 6 ohm.
Good luck printing
For my dual extruder I use NEMA 11 stepper motors, 0.67 Amp/phase. ( [www.thingiverse.com] )
These light stepper motors can easy go down when powered with a higher current as specified. Per mistake I fired one up with 1.5 amp and immediately one phase was gone.
When it happens you can conclude this by measuring the resistance from the 2 phases. (see motor spec) Both phases should be close to equal. Mine should be 6 ohm and measured 2.3 and 6 ohm.
Good luck printing
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Re: NEMA 11 stepper motor, one phase down March 26, 2019 08:01AM |
Time to move to a NEMA14, more torque for the same weight 
"A comical prototype doesn't mean a dumb idea is possible" (Thunderf00t)
"A comical prototype doesn't mean a dumb idea is possible" (Thunderf00t)
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