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Stepper driver allowing the stepper to slip when moving.

Posted by JoeDaStudd 
Stepper driver allowing the stepper to slip when moving.
February 05, 2012 09:31AM
Hi all,

I've just finished my build (finally) and was about to start the calibration when I noticed one of the steppers (y) was turning, but not actually moving the belt.
Without an pressure on the drive it turns, however the moment any pressure is applied it stays still. Once its stopped it holds (like it should), but the moment its in motion it will slip (its possible to turn it in the opposite direction).
I tried upping the amps, but it still does the same thing. With a different stepper driver it works fine.

Is there anywhere where a solder bridge or lack of solder might cause this? Or is there a general fix?

Thanks in advance,

Joe


My Reprap blog

jds-reprap.blogspot.com
Re: Stepper driver allowing the stepper to slip when moving.
March 05, 2012 08:00PM
It's possible that the trimpot that controls the current to the stepper is defective. You can check it with a multimeter when the power is off and it's disconnected.

Easy fix is to return it and get another one.
Re: Stepper driver allowing the stepper to slip when moving.
March 06, 2012 01:27AM
I ended up buying another stepper driver. I will test the trimpot tonight though.

Thanks


My Reprap blog

jds-reprap.blogspot.com
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