I thought that might raise an eyebrow, yes the G540 is currently set to 2.8amps for all axis. This was the setup for my original build which used 3 x Tormach 280oz steppers. I just unplugged the control box from that machine and plugged it into the new machine. My intension all along was to add a heat-sink to the G540 and increase the current resistor to 3.5 when I build the new controller for the Nema 34 upgrade. I have been able to cut at 100ipm no problem with the way it is setup now, so I just left it.
I found a good sized heat-sink to be used with the G540 so I’m comfortable upgrading the current to 3.5amps. I’m just finishing up the wiring for the 3 transformers which in testing produced the exact voltages I listed above. I have yet to go hunting for the resistors I need for the caps.
I understand running the ~600oz steppers at 2.8amps effectivly detuned(lowered) the output.