> > Yup, there are quite a few ways to skin this cat. Mine may not be the > best, but "it works for me". > > > Cheers, Gene Heskett
At the moment my cat is more of a lion. I have this really nice 1.8kW servo and drive that just arrived yesterday. 19mm shaft, 6mm key none of which will fit the existing pulleys on the 2HP single phase motor (1.5kW). With all the belts removed I turned on the existing mill motor and I'm amazed at how noisy it is. Hum wise. Flip power off and it coasts silently (almost) to a stop and just before that the noise of the centrifugal switches dropping out. My 1HP 3phase Baldor with VFD on the SouthBend Heavy 10 is way quieter. At 1725 RPM and two B size belts and an intermediate pulley the range of 9 speeds is from 270 to 2950 the low and the high range with the single phase motor are lacking. The new servo is 0 to 3000RPM and I think I'll use two pulleys to try and reach 6000RPM I haven't yet decided if I'll use 0-10V, step/dir or Modbus to run it. Probably easiest to use step/dir on the second parallel port. I do have Peter Homann's little Digispeed DC-06 which takes step/dir and creates isolated 10V and MACH3 has a checkbox to support that. But since the servo already supports step/dir it's rather pointless to change that to 0-10V externally when the drive can do it internally. Not sure how I'd use that for LinuxCNC. In fact I'm not sure how I'd configure LinuxCNC to run the spindle with step/dir since it seems to be more PWM oriented. Maybe someone can explain how I'd link a step/dir motor to the LinuxCNC spindle in the HAL file. https://www.grizzly.com/products/Grizzly-Vertical-Mill/G3616 John _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
