Stepper motor current question. 3.9 A per motor or per coil

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dorin
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Joined: Thu Nov 28, 2002 5:24 am

Stepper motor current question. 3.9 A per motor or per coil

Post by dorin »

I have several 23D-6108A steppers.
I guess they are now known as 23D108S from Anaheim Automation.

http://www.anaheimautomation.com/produc ... =74&cID=19

Rating on the outside of the stepper motor is 3.9A.

Can I assume that is for the whole motor? Or is it per coil?

Thank you,
Mike
www.chaski.com
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Dave_C
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Location: Springfield. MO.

Re: Stepper motor current question. 3.9 A per motor or per

Post by Dave_C »

Mike,

In all my research I've not seen any rated per coil. Just amp draw on the motor as a whole.

Dave C.
I learn something new every day! Problem is I forget two.
hammermill
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Re: Stepper motor current question. 3.9 A per motor or per

Post by hammermill »

review how a stepper motor operates. as to produce one step, then the next set of coils is energized , so each coil set will draw the rated current and is the same as the motor rating.

this video by texas instrument will help your understanding
https://www.youtube.com/watch?v=bngx2dKl5jU
oldvan
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Re: Stepper motor current question. 3.9 A per motor or per

Post by oldvan »

The video would have been better if the author understood and demonstrated that movement is a tooth at a time instead of speaking incorrectly that an A to B transition would be 45 degrees.
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ctwo
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Re: Stepper motor current question. 3.9 A per motor or per

Post by ctwo »

My motors can be wired in series or parallel, so that affects the current rating. The spec on the motor in question (the 23D108S anyway) appears to be 2.7A bipolar series RMS current and you are already wired in series with a center tap.
Standards are so important that everyone must have their own...
To measure is to know - Lord Kelvin
Disclaimer: I'm just a guy with a few machines...
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