Hi All,
just wondering since im having a Nema 23 laying around, and if this motor can be used on the x-axis after modifying the x-axis back plate, will this be a good idea. im thinking of using this motor having the thought there are 2 nema 17’s on the Y-axis running parallelly and X axis would provide more torque.
my real question is the nema 17’s are 2 ohm 1.8 degree but the the nema 23 is 1.5 ohm 1.8 degree. what will this cause in terms of electronics when using the Ramsps1.4
I think the X axis would be an easy if you want to use nema23s. If you are dead set on nem23s then I might suggest the Root 3 or Root4 standard machines. But if you modified the motor mount first, it might be a nice easy way to mount the nema23 on the X axis.
Now on to the interesting part of your question, firstly those specs you’ve given are the DC specifications. They don’t give any characteristics on the reactive elements of the motor and what impedances it’ll present to the driver when in motion, nor give you the function of current vs torque vs RPM. To answer your question simply, using a nema23 on a A4988 or DRV8825 or other driver will be fine - no provlem. The thing you need to consider is the current the driver can apply whilst staying cool. And what that current translates to motor characteristic. More specifically you need to look at the current through the stepper motor and the torque it can provide. But remember, torque typically reduce when the motor rotates. So moving the stepper motor faster, reduces the torque of the motor. Any decent motor supplier will offer this graph. If not - dont both buying from them. So compare the two motors at the same current setting and see which motor offers the torque you require and RPMs to satisfy a rapid move.
Hope that helps