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Topic: Stalling Stepper Motor (Read 145 times) previous topic - next topic

MickyK

Hi,
 Do stepper motors suffer (major) problems if they are stalled out??

A normal 12v dc motor can survive a short stall without major damage, a big stall results in smoke and nasty smells!

Have I ruined my stepper because of (minor) over-loading??

At the moment, when I run my stepper, with a Delay(250) in the command line, it seems to lose steps, either back-ward or forward.

Any comments from anybody that has had similar issues?

Thanks

Mick



Robin2

A stepper motor should be able to stall forever without damage - assuming, of course, the use of a specialized stepper motor driver.

Post a link to the datasheet for your motor and tell us what stepper motor driver you are using,
Also give details (volts and amps) of your motor power supply.

...R
Stepper Motor Basics
Simple Stepper Code
Two or three hours spent thinking and reading documentation solves most programming problems.

MickyK

Thank you Robin,

I'm using a UNO, Freetronics stepper driver, a NEMA17 motor, at 12v.

I will just have to go back to the basics, now that I know that the motor isn't at fault.

Mick

Robin2

I don't know that stepper driver. Please post a link to its datasheet. I assume it is not just a simple h-bridge driver?

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

MarkT

Stepper motors draw maximum power when stationary, stalling one that's trying to move generates less
heat, typically.  They are run at their max continuous current all the time.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

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