[phomann]

The trim pots on the back of the G540 are to tune out any resonance in the motor. It is not to set the stepper motor voltage.
You need to ensure that you have set up the G540 to deliver the correct current to the motor. This is done with a current set resistor connected to pins 1 and 5 of the axis DB-9 connector.
Have a look at the manual for the drive to see how this is done.

Cheers
Peter


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[bcurrey]

The trim pots on the back of the G540 are to tune out any resonance in the motor. It is not to set the stepper motor voltage.
You need to ensure that you have set up the G540 to deliver the correct current to the motor. This is done with a current set resistor connected to pins 1 and 5 of the axis DB-9 connector.
Have a look at the manual for the drive to see how this is done.

Cheers
Peter

Thank you for the response! I did some research on this today, but unfortunately, I think it's confused me even more. For my setup, I'm using these cables . They come with 3.5 kOhm resistor resistors already installed between the 1 and 5 pins. Using that resistor, the the z axis is getting the max amount of power, correct?

Little more info about my setup: the Z axis motor I'm using is the one from Openbuilds high torque NEMA 23 step motors.

My Z axis setup is similar to this one: eBay Link


Do you have any other ideas of other things I can check? Thanks.