Stepper with the same NEMA 17 size exist widthg a length that is doubled. So look into the Marlin software where the maximum current for the stepper motor is set to ensure it limits to the nominal current, in this example 4A.īut that is not the only parameter which you can use to make your DIY 3D printer better. If now I do apply 48 VDC to that same stepper motor but set the maximum value of the current to those 4A: What does this say about a stepper motor that achieves the same nominal power? The cables used in the motors are specified for more current. The choice of the stepper motor to be used should have the lowest nominal value while still offering the torque you have from a 12V 1A stepper motor. You must setup the registers of the Trinamic ICs to limit the current to just that 1A! So if you would apply to the motor pins of a board that just roots that supply to the proper pins for the SilentStepSticks the torque supplied by your stepper motor would quadruple. If I apply not 12 VDC, but 48 VDC then the equation gives us: So if I do assume that the stepper motors used with the Creality Ender 5 (Plus) 3D printer have a nominal voltage of 12 VDC and, for simplicity of the computation, 1 A, then: There is a relation between the power you supply to a stepper motor and the torque it will deliver. Why am I doing so?Īllow me to use the standard formula for power:

The Trinamic ICs, as they are used in SilentStepperSticks use PWM, pulse width modulation to limit the current to a value at or below the 2.8 A. I do operate that stepper motors with a voltage of nearly 40VDC. I do operated them with 35 VDC and set the Trinamic stepper motor IC to limit the current to a maximum of the 2.8 A specified for the stepper motor. I do use stepper motors in my naval models and the ones I use have a nominal voltage of 3.6 VDC and 2.8 A. This is the data that usually shows up on the stepper motor itself. Stepper motors have usually specified a nominal current and nominal voltage.

Allow me to give you some hints from somebody who has played qith stepper motors and Trinamic ICs sinde more then 7 years. Sadly also no real datasheet is made available about the stepper motors used.

What I am seeing anywhere in the 3D communities is the lack of knowledge about stepper motors.

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