I'm setting up a project with a G540.
My power supply is ~50v @ 8 amps.
These are the steppers I would like to use: Nema 17 2.1A Stepper Motor High Torque 92oz.in
There inductance is: 3mH±20%(1KHz)
When you run the numbers, the voltage come out to 55.4v which exceeds the capacity of my power supply and the 50v limit of the G540.
What would be the effect if I used them anyway?