I'm using Leadshine's AM882 drivers on 3N.m steppers and am at the point of tuning them all up using Leadshine's ProTuner Software. What I can't understand is the current/phase is stated at 2.1A but can't for the life of me work out if the amp setting in ProTuner is asking me to put in the value per phase or the total value required by both phases combined. I'm running these drivers/steppers at 68v.
Like Neal has said if they are 8 wire steppers then I would use them in a parallel configuration as you will get more torque.
I run AM882 drive on my router at 3. something A with twin screws and 68V PS. Steppers are happy at 60'C and above.