I've been using the Rockcliff 4 axis controller with 2 NEMA 17 motors driving a two axis quilting machine using a cable drive. I've noticed that the Mach3 software appears to not control speed or ipm as well as it should. I have tried several different variations of algorithms to adjust the speed closer to an acceptable rate (12 ipm), but then I find that when I do a speed calibration check of 1 in, the x axis and the y axis both go all the way to the plus stops. This appears to be a mistranslation of the distance setting in Mach3. Otherwise all tests have shown that a favorable speed setting is 4000 steps per min. in full step mode. This allows for no skipped steps on these motors. I find that, yes, each axis can be set to half-step, however there is about a 20% loss of torque. I find that this is not acceptable in the
use project that I am working on now. My question is this, is there is formula that can be used with Mach3 to cut the distance travelled down to an acceptable level?
Any help would be greatly appreciated.
Larry  |