Thanks, both of you!

So reducing the current via firmware does reduce the heat produced. This is what I originally thought (and what my understanding of physics tells me ) but the Duet-documentation kind of confused me there.

Hi, I am relatively unexperienced with 3d printing hardware. I have a cartesian machine with 2 amps steppermotors (Rated Current/phase: 2.0A, Voltage: 2.8V, Phase Resistance: 1.4ohms) and a 12V power supply that I used for engraving with the Arduino CNC shield.
I wanted to turn the machine into a printer, so I got a 24V power supply and a Duet2 Maestro. I suspected that I could just reduce the motor current by software and should get away with it. But after reading the Duet3d documentation I am not sure if I can run these motors with the Maestro. I dont need all the torque, but I fear that the board might get too hot.
Is it possible to run those steppers or do I need to get something like the Duet2 Ethernet?

Thanks