Can I drive two 3amps rated stepper motor with Motor shield

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alitarraf
 
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Can I drive two 3amps rated stepper motor with Motor shield

Post by alitarraf »

Hey,

I was wondering if the V2 motor shield can power two stepper motors (Vexta PK266-03A and PK266-03B). I am attaching the data sheet.
1.2Amps per channel, and a max 3amps are the specs of the V2 shield, but my motors are rated for 3amps. (check page 34 attached)

Is there a way we can make this work?

Thanks
Ali T.
Attachments
Motors datasheet
Motors datasheet
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Franklin97355
 
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Re: Can I drive two 3amps rated stepper motor with Motor shi

Post by Franklin97355 »

The motor shield will not work with those motors. Check out this tutorial https://learn.adafruit.com/all-about-st ... he-stepper

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alitarraf
 
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Re: Can I drive two 3amps rated stepper motor with Motor shi

Post by alitarraf »

Ok so will the synthetos grbl shield work? Its rated current is 2.25amps PER winding.

My motors have 3amps, 2.25V, 0.75 ohm.

Does this mean 3amps per winding or 3amps total?

I am a little bit confused and would appreciate any help in the right direction.

Thanks
Ali T.

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adafruit_support_bill
 
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Re: Can I drive two 3amps rated stepper motor with Motor shi

Post by adafruit_support_bill »

My motors have 3amps, 2.25V, 0.75 ohm.
3A per phase is the maximum safe current that the motor can handle. Each phase (winding) of those motors will draw 3A at 2.25v when not moving because the phase resistance is 0.75 ohms. However, the motor isn't really designed to be run from a 2.25v source. Performance would be terrible if you did. You can run it from a higher voltage source - as long as the driver limits the current per phase to 3A or less. The guide linked above describes how this works.
will the synthetos grbl shield work? Its rated current is 2.25amps PER winding.
That is the maximum current per phase that the shield will supply. You can safely run your motors using this shield because the current will be limited to no more than 2.25A.

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alitarraf
 
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Re: Can I drive two 3amps rated stepper motor with Motor shi

Post by alitarraf »

Thanks Bill, that makes things clearer!

Ali T.

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