Hi guys. Been browsing around for a while trying to find some info ive been looking for. Heres my setup:
DTLLC 10A Unipolar Stepper Drive, running 12V bus voltage
3- 63KG-CM unipolar steppers, 8 wire, 6.6V, 3A/Phase
Mach 3
Fixed Gantry 3 axis mill, Live Z axis, counterweighted
Steel Frame, 1" Round Linear Slides
1.5" Ballscrews
Timing Belt Reduction Gears
24x24 working size
Finally got some answers I was looking for last night, about high bus voltage. Read that bus voltage should be 10-24x rated stepper voltage. So that puts me at about 70V minimum. I have some 60V supplies lying around, so ill probably start with them. I dont have a chopper drive board, so I need to run resistors for current limiting correct? Im sure I can find a calculator online. My DTLLC board has a huge sink and fans on the driver chips, and has ran 8A 12V for days and days before.
My original issue was with stepper speed, but running them at 12V no doubt they werent running at their full (or even close to) potential. The DTLLC chips are rated at 100V 25A.
Should I buy a set of chopper drivers? Keep the DTLLC board and run resistors? Any specific voltage I should run?
Main purpose of this machine is some aluminum milling with coolant, MDF cutting, and some engraving work in all sorts of materials.
Thanks a ton in advance. I can take some pictures if needed.