http://www.hobbycnc.com/stepper-motor-ratings-now-in-unipolar/ CNC for the desktop machinist and hobbyist. Fri, 07 Oct 2011 19:17:24 +0000 hourly 1 http://wordpress.org/?v=3.0.3 http://www.hobbycnc.com/stepper-motor-ratings-now-in-unipolar/comment-page-1/#comment-60 Dave Rigotti Wed, 16 Jul 2008 04:27:57 +0000 http://www.hobbycnc.com/stepper-motor-ratings-now-in-unipolar/#comment-60 Unipolar rating is 4.2V 3A 305ozin Bipolar parallel rating is 3.0V 4.2A 425ozin Bipolar series rating is 5.9V 2.12A 425ozin Unipolar rating is 4.2V 3A 305ozin
Bipolar parallel rating is 3.0V 4.2A 425ozin
Bipolar series rating is 5.9V 2.12A 425ozin

]]> http://www.hobbycnc.com/stepper-motor-ratings-now-in-unipolar/comment-page-1/#comment-59 Tom R Tue, 15 Jul 2008 15:51:57 +0000 http://www.hobbycnc.com/stepper-motor-ratings-now-in-unipolar/#comment-59 The inductance is the same for bipolar parallel and unipolar connections, but the current differs depending on the connection type. Is the current rating of 3A for the Nema 23 405/425ozin motors for unipolar or bipolar parallel mode? Can you please tell me the appropriate current ratings on the motor for both bipolar parallel and unipolar usage respectively? (I'm guessing the specs below are for unipolar mode, since that's how your HobbyCNC board uses the drives, but I wanted to clarify, so in bipolar parallel the current would be somewhat higher.) Thanks! The inductance is the same for bipolar parallel and unipolar connections, but the current differs depending on the connection type. Is the current rating of 3A for the Nema 23 405/425ozin motors for unipolar or bipolar parallel mode? Can you please tell me the appropriate current ratings on the motor for both bipolar parallel and unipolar usage respectively? (I’m guessing the specs below are for unipolar mode, since that’s how your HobbyCNC board uses the drives, but I wanted to clarify, so in bipolar parallel the current would be somewhat higher.) Thanks!

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