Newbie- Doubt about stepper motor...!

[naveen.a019]

hi, i am new to this forum, I know that unipolar stepper motor has 2 Phase usually, i have a stepper motor which is rated 1A per Phase..My Concern is am i supposed to give 1A or 2A to the motor as total current, since it has 2 phase...?..am really confused....I know that many of you know this already ...but please help me out on this..

[Crevice Reamer]

Hi Naveen.

Firstly, Unipolar only uses ONE phase--Hence the uni prefix instead of the Bi prefix.

When sizing PSUs for steppers, we use the Amp per phase rating only. So a 1 Amp per phase motor will only need 1 Amp.

I think some of this may be helpful to you:

http://crevicereamer.com/Page_2.html

Wishing you well:

CR.

[naveen.a019]

Originally Posted by Crevice Reamer Hi Naveen. Firstly, Unipolar only uses ONE phase--Hence the uni prefix instead of the Bi prefix. When sizing PSUs for steppers, we use the Amp per phase rating only. So a 1 Amp per phase motor will only need 1 Amp. I think some of this may be helpful to you: http://crevicereamer.com/Page_2.html Wishing you well: Dear sir, I am really great full to you for clearing my doubt, and the link which you put up was really helpfull, Thankyou so much. Regard's Naveen CR.

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[Crevice Reamer]

You are Welcome Naveen. Glad I could help.

CR.

[Crevice Reamer]

Naveen:

I have to correct what I said about Unipolar motors only using one phase--They DO use 2 phases, but only ONE of each phase's 2 coils at a time.

A unipolar motor uses one coil of each phase for forward and the other coil for reverse.

Still only uses 1 Amp if rated 1 Amp per phase though.

Sorry for the misinformation. I don't know what I was thinking when I wrote that.

CR.