Jon, I accidentally missed this reply, I'm new at this. The plate on the motor is old and difficult to read. The Ohms probably are .8. There is a 2.75 gear reduction to the screw. The lead screw is 5 TPI . Rapids are now 100 IPM, so max. motor rpm must be around 1375 RPM.
Terry On Sat, Jul 3, 2010 at 1:05 PM, Jon Elson <[email protected]> wrote: > Terry Neilson wrote: > > Chris, > > Yes I will get photos soon. Can I simply send an attachment, not sure how > to > > use imagebin. I took the cover off the end of the x axis servo, it does > have > > what looks like a small motor in there, must be a tach. I wrote down the > > specs on the plate on the y servo. > > TORQUE IN_OZ 440, CUR-A 8,RES-OHMS 8, IND-MH 5.6, BEMF-V 1000RPM 41, MAX > RPM > > 2000 > This is the motor spec: > 440 Oz-In continuous > 8 A (continuous?) > 8 Ohms (sounds WAY high - I^2 R = 512 Watts) Could this actually be 0.8 > Ohms? > Kv 41 V / 1000 RPM, so at 2000 RPM it needs 82 V plus to get max torque > it needs > additional 8*8 =64V , so a 146 V supply will allow max torque at max speed. > If the motor is really 0.8 Ohms, then it is 88 V. But, you probably > don't need 2000 RPM. > Even with a 2:1 belt reduction, 1000 RPM gives 500 RPM at the leadscrew, > assuming 5 TPI > that is 100 IPM. > > > TACH V/1000 RPM 7 > This is the tach spec, 7 V/1000 RPM. > > , JA-LB-IN-SEC2 .0163 > This is your rotor inertia. > > The list does not allow attachments. > > 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 > ------------------------------------------------------------------------------ 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
