Topics

1

General Mach Discussion / How fast is your G00 Rapids?

« on: July 16, 2007, 03:17:53 AM »

Just wondering how fast others in the forums are getting thier machines to run at.  Mine only does 70ipm running Mach 3 at 25khz.  I have a 3.6G processor and can run Mach at 35khz, but the servo's are smoother during 3 axis contouring if I keep the Mach controller at 25khz.  I guess my mistake was the high resolution encoders.  I think I have more resolution using the 512 count encoder wheels than I would ever need.  Other than that, the servo's are geared 2:1 and the ballscrews are .100" IPT.  I was really hoping to get to 150ipm rapids.  I think that's pleanty fast for a open table bridgeport mill.  Any faster than that and I would think that a programming error could cause some serious damage, bodily as well as mechanically.

Michael

2

General Mach Discussion / no movement, limits don't work, ????????

« on: May 16, 2007, 03:10:22 AM »

This is my second retrofit, first for using Mach 3.  I can't get anything to work even to get a baseline on getting this thing running.  I am using "lowcostretrofit" system from Logitrol with "pacific scientific" servo's.  I've tried wiring the encoders multilple ways, tried swithing the power leads, nothing.   I installed the mach 1 license file into the Mach3 folder, and the limit switch's don't work no matter what I do.  If I set the ports and pins to "low active pin 10" for emergency stop, I can reset the system no problem, but it doesn't matter if the limit switch's are hooked up or not.  I can even unplug the 25 pin cable, which is a straight through, I verified it with a VOM, and the system will reset.  I've tried looking up the COM1 port under device manager, it says the port is labeled 03F8-03FF, even if you set it to 0378, it doesn't work.   I'm not a computer expert, and I have no clue what to do next.  Any help will be appreciated.  I've been surfing the forums all day and all night reading about other's problems and solutions, and nothing seems to work for me.?  I fallowed the instructions from Logitrol down to a "T", loaded the software from thier CD included in the package, removed that and downloaded the software directly from www.artofcnc.ca     ??  If i use a VOM, I do measure 5V between pins 25 and 3........  Don't know what to do next........
Michael