Nema 23 inductance, would this cause me an issue with Duet Wifi?
Mink last edited by
I am looking to upgrade my 400mm diameter, 1m tall delta 3d printer to a Stepper Online Nema 23 model 23HS30-2804S stepper motor.
The inductance for that stepper motor is showing as 5.4mH ± 20%(1KHz).
I was wondering if that inductance is too high for the Duet Wifi?
If so, I'll have to go with a lower torque Stepper Online model 23HS22-2804S with inductance of 2.5mH ± 20%(1KHz).
Jacotheron last edited by
Based on the documentation at https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors under the General Recommendations bullet 4: "Avoid motors with rated voltage (or product of rated current and phase resistance) > 4V or inductance > 4mH"
That document also have a section on the inductance and how it affects your printer. Most notable the higher the inductance, the lower the speed at which torque will drop off. Using the EMF calculator at https://reprapfirmware.org/ can help you determine at what speeds this will happen, and then decide if that is going to affect you.
As @Jacotheron says, use the calculator to work out the maximum speed you will get without loss of torque.
Are you sure that you need to use Nema 23 motors instead of Nema 17? What are you hoping to achieve?