I'm currently trying to improve my understanding of how drivers and motors interact and thought I had reached a point that was sufficient to get started with a project. While I was able to drive one motor without any difficulties, using a new stepper driver for another motor has led to that motor overheating. I have read through several similar topics, but unforunately still can't pinpoint where the problems in my case could arise (probably missing something very basic!). I'm still experimenting, but maybe someone here can spot a mistake more easily.
I am currently using this setup:
I started off by using "Motor A" and "Stepper Driver A" and never really ran into any significant temperatures - barely even warm, even after keeping the motor idle for longer sessions, which, if I recall correctly, should be most current consuming.
I then moved over to using "Motor B" and "Stepper Driver B" and could barely touch the motor after a couple of minutes. I was expecting that motor to build up more heat (due to higher phase resistance if that's right?) and tried to compare results by using "Motor A" with that driver, which led to comparably high temperatures.
I am currently not using microstepping and have tried matching the jumper settings to get the driver current as close as possible to the motor specs. Any ideas what that heat buildup could be due to? I was expecting both drivers to be quite comparable, judging by their specs.
Another thing that led to confusion was the current table on "Stepper Driver B", which mentions peak and RMS current values. Since I am using full steps I would take the peak values as reference, when microstepping the RMS values? Hope that's not too many stupid questions all in one go!