On Friday, June 10, 2011 11:08:44 PM Kirk Wallace did opine: > On Fri, 2011-06-10 at 17:53 -0500, Jack Coats wrote: > > I was cruising CNCZone and saw a thread on SuperPID ( see superpid.com > > ). It is a speed controller to control router speeds that is new on > > the market and can be manually controlled > > or electronically controlled. They seem to support MACH3, but not > > apparently EMC2 (or at least not > > documented well). > > > > Does anyone here know about it? Any suggestions? Or options (other > > products)? > > > > Just curious... Jack > > After a _very_ brief look at the website, it looks like an SCR speed > controller with a micro-controller built on to the board. I tend to > think EMC2's HAL PID and PWM connected to a KBIC style speed controller > (universal motor speed driver > http://www.kbelectronics.com/manuals/kbic_manual.pdf > http://www.wallacecompany.com/machine_shop/kbic/ > ) would do the same thing, plus integrate better with HAL, have more > configuration options, be open source, etcetera. If the firmware where > open it might be interesting to play with other options for a non-EMC2 > smart SCR driver application. Maybe add a keyboard and have a stand > alone smart universal motor controller?
Having a PMDX-106 interfaced to the OEM speed controller that came in my micromill which resembles the kbic, and comparing the smoothness of the speed control vs the typical speed in the trigger of an electric drill, there is no basis for comparison. The SCR controllers, being 60 or 120 hz based cannot begin to approach the smoothness and low speed torque, combined with a very stiff speed vs torque, that I routinely get from my lashup. I can turn my spindle 30 rpm with enough reserve that if it hangs, it will clear the motor fuse before I can get a hand on the e-stop. That is a hexfet design running at 20+ kilohertz. Cheers, gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) I KAISER ROLL?! What good is a Kaiser Roll without a little COLE SLAW on the SIDE? ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
