On 11 April 2018 at 09:11, jeremy youngs <jcyoung...@gmail.com> wrote:
> The red caps are generally 2-3 k rpm , what response do you need at your > lowest rpm? And what is the lowest rpm. The red caps will give you great > low end torque but will have a threshold below which it will be weak > usually under 50 rpm on a 3000 rpm motor most drives give a 50:1 rpm ratio, > my carotron ( 5hp drive , driving a 3kw baldor servo motor) only gives a > 20:1 and my low rpm below 50 can be hand stalled easily at 52 it will burn > your skin off. That doesn't sound right. A brushless servo should be able to give rated torque indefinitely at absolutely zero rpm. It sounds to me like your drive might be set up funny? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
