Hi Kirk: Thanks for ur interest in my project.
The reason that I am having to do something about my steppers is that my machine started off life as a toy, mini desktop. I changed things and up graded the size of the whole machine so I could do real work with it. The steppers I have are Bipolar, 1.8 amp. @ 30V. The controller is from stepmaster. It can only handle 2.8 amps @ 30 volts, and I can't find any tuning info at all, on this drive, except for the manual I got with it when I bought it off e-bay. Yes ball screws would be a great asset, but cost would be about $130 per axis, as far as I can tell. All axis and screws turn freely. Yes, the weight of the spindle head could be compensated for, but the small ampridge of the controller ends up being the weak link when considering up grading the steppers to proper size. What would be the minimum that I would need from Mesa, as far as boards, to start building toward a 4 axis system with the least expense? They have so much that they offer, it becomes confusing. One thing I don't understand; For a servo system, I need a servo amp, with a PWM card, because EMC doesn't generate the PWM signal fast enough nor can read the encoders fast enough, to keep up with the movement of the axis. So then, how does EMC control the process taking place? And if that's true, why would the step and direction board be a less advantage than the Mesa amp? Doesn't both boards take control of the operation using their own, separate, PID control? Thanks, Bill ------------------------------------------------------------------------------ What happens now with your Lotus Notes apps - do you make another costly upgrade, or settle for being marooned without product support? Time to move off Lotus Notes and onto the cloud with Force.com, apps are easier to build, use, and manage than apps on traditional platforms. Sign up for the Lotus Notes Migration Kit to learn more. http://p.sf.net/sfu/salesforce-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
