Terry Neilson wrote: > This has "gage wheel" type encoders that use a friction wheel that run along > Ugh, these may not be terribly reliable. Position can drift with many back and forth moves, and chips could get under the wheel and shift the position. > I am not sure if the amps are velocity > mode and take +-10v, how can I find out? The amps say Glentek on them. The > schematic shows the motors as tach motors. If there is what looks like a tiny motor on the back end of the motor, with a pair of small wires that go to the servo amp, that is the tach connection.
I needed tachs but didn't have them in my motor. I added a tach driven by a tiny instrument belt off the ballscrew. I put an encoder on the end of the ballscrew with a helical-slit coupling. You can see some photos here : http://jelinux.pico-systems.com/CNCconv.html Please excuse the awful pictures, I ought to redo them. Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
