Warning: motor phase B may be disconnected reported by driver0
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How about these https://www.omc-stepperonline.com/nema-17-stepper-motor/3pcs-of-nema-17-bipolar-45ncm-64oz-in-2a-42x42x40mm-4-wires-w-1m-cable-and-connector.html. More torque than you need, but only 2.8mH inductance and 1.1 ohm resistance.
Most Nema 14 motors have low rated current, which unfortunately also means quite high inductance.
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@Veti said in Warning: motor phase B may be disconnected reported by driver0:
1.8mh
That's a 0.9deg motor, so using it would be a very bad idea in this instance. Is there a 1.8deg version with similar characteristics?
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@Veti said in Warning: motor phase B may be disconnected reported by driver0:
That one looks good! @educa, try plugging the values for that motor into the calculator, with the actual current set to 1.5A.
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If I plug this one in the calculator (and I enter 2500mA rated and 1500mA given current @ 24vDC, then this motor should theoretically give me 28mm/s before things go red
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I wonder what the back EMF due to rotation is based on. For this last motor that seems so be the limiting factor and not the inductance. It seems like it is related to the Rated holding torque so I guess thats as good as it will get for that motor (if 28 mm/s is the calculated limit, then maybe 25mm/s would be a safe limit and that is a very acceptable speed for what I want to build
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I think I found one who will even go faster. he has a little higher inductance, but half the holding torque.
I can move my axis perfectly fine with only 0.2A on the current motors which are rated at 1.5 , so I require very little force.
Chances are big that this motor will have enough juice to move the axis and will also be able to go faster in the end because if reasonably low inductance EMF, but due to the lower holding torque also more margin in the EMF due to rotation of the motor
https://www.omc-stepperonli
ne.com/hybrid-stepper-motor/dual-shaft-nema-17-bipolar-1-8deg-22ncm-31oz-in-1-33a-2-8v-42x33mm-4-wires.html -
@educa said in Warning: motor phase B may be disconnected reported by driver0:
I think I found one who will even go faster. he has a little higher inductance, but half the holding torque.
I can move my axis perfectly fine with only 0.2A on the current motors which are rated at 1.5 , so I require very little force.
Chances are big that this motor will have enough juice to move the axis and will also be able to go faster in the end because if reasonably low inductance EMF, but due to the lower holding torque also more margin in the EMF due to rotation of the motor
https://www.omc-stepperonli
ne.com/hybrid-stepper-motor/dual-shaft-nema-17-bipolar-1-8deg-22ncm-31oz-in-1-33a-2-8v-42x33mm-4-wires.htmlI use the single shaft version of that motor in one of my printers. It will have more than enough torque for your printer. Plan on 0.8A current.
