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Thank you for that. I suspected the input would be stable one way or the other , but for all the work I've put into my creation, I just wanted to be sure. I will try leaving the direction input...

Hi.

I have a pretty simple question, but since I am not an electrical genius, finding the answer isn't so simple.

I am using a G251 to drive a delicate mechanism that must only be driven in one...

Thank you both, Mariss and neilw20, for your helpful advice. :)

I'm doing a special setup with a g251 and a nema 17 stepper.

I want to pull the endcaps off the stepper for machining on my mill.

Can I get away with this without harming the stepper?

I do...

Jason, here's something from my 251 manual:

"Always use a current set resistor even if 3.5A is selected (drive maximum current). If no current set resistor is used for 3.5A then automatic standby...

Wow. Thanks for that kiwibum. My electronic skills are limited so thats why I was asking for part numbers as I might not appreciate all the details in these circuits.

I think what I would like...

Thanks very much rwaudio.

"Many people on the CNC Zone forums seem use a switching supply as-is. I'm curious if this is a recommendation, or a "must have". My application is a Taig Mill and my rapids are under 3 inches of...

Hi Lee,

Yes, many refer to this type of power supply as a lab supply. I am interested in the mastech because I would be able to use it for so many other things besides just running my 251s.
...

Hello,

I'm a new forum member though I have been following this thread for quite some time.

I am also a new owner of some g251s which arrived last week. The drives were carefully packed...