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Replacement of feeder stepper motor, UM2

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Posted · Replacement of feeder stepper motor, UM2

Can anyone confirm the correct feeder stepper motor for the UM2. I have a failed stepper motor, so i removed the original which had the following part number on it


I was unable to get this part number, but found the following part number from a company called Zapp


I got one of these and replaced the old one.

The motor now works, but runs very fast, I would guess at twice the speed.

Does anybody know whats happened, have a replaced with an incorrect part? Why would the motor runs so fast.

Any advice appreciated.

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Posted (edited) · Replacement of feeder stepper motor, UM2

Your new motor is 200 steps/rev, the um2 feeder motor is 400/ step/revolution

You would need to change the esteps to half your current amount

Google on this forum (search uses google) change estep um2


Mind that in that post the estep number isn't the one you need, I don't have the um2 esteps at hand, but I think you get the idea?

Edited by Guest

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