[Paul R]

I need help understanding the settings on this driver. Steppers work best with with dip switches M1, M2 and M3 set to "0" , which on the microstep resolution chart is "(blank)". With a microstep of "1" the steppers are very slow and at"1/2" the steppers barely crawl along. The highest current I can use is 1.8 amps, over this the steppers will stall. Also the dip switches M4 and M8 have no settings, should they be on "1" or "0" or are they not used.

I am using 4030 drivers with Kellinger 382 oz. 4 wire steppers ( rated at 3.6 volts and 3.0 amps) and a KL-320-36 power supply (36volts and 8.8 amps) and a C-10 Breakout board. The machine is a Solsylva 25 x 37 Dual Leadscrew with 3/8 10 2 start leadscrews. In Mach 3 I ran most of my tests with 1000 steps per inch, velocity of 25 and acceleration of 4.

Is the problem I described related to driver settings or might this be a wiring problem ?

[Crevice Reamer]

Hi Paul R. Welcome to the Zone!

For starters, If you have the drivers set to full step, that's 200 steps per revolution. 10 TPI lead screws = 2000 steps per inch. If you add micro stepping, then you must also multiply the 2000 SPI by the amount of MS.

I think your main problem is trying to power a 76V motor with only 36V. That's a mighty big performance loss. Another problem may be trying to get 3A, (The MAX) out of a low end controller that may not be reliably able to output that much.

Between the two, you are underamping (That decreases torque) AND undervolting. (That decreases speed)

Measure the output voltage of the PSU to see if you are at least getting the 36V.

I don't see any cheap solution for this though. To run those motors comfortably, you would need much more voltage and some beefier drivers.

CR.