I'm working on my first stepper motor project. Things have gone well so far! I am using Mega48A on the front end that is sending step pulses to an STMicroelectronics L6206N dual full bridge driver.
The stepper motors I am trying to control are spinning metering pumps. I can get the pumps to pump water and to spin dry with no problems at pretty decent speeds. However, one of the materials I need to pump is a little thicker and it causes the motor to stall at fairly low speeds (153RPM is the max I can pump without skipping steps). My goal for this project to be successful is to pump at 300RPM.
The stepper motors I am using are 23KM-K035-24 rated at 2.6v and 2.3a. They are 1.8 degree step motors so at 153rpm I am at 5,100 pps. I started this project running at 24vdc with current limited to 2.3A through the L6206N. I played around with increasing current with little benefit and then I increased voltage to 48VDC and actually saw performance decrease by about half.
Does anyone have any recommendations?