On 10 March 2010 08:49, Rudy du Preez <r...@asmsa.co.za> wrote: > The motor runs very smooth and the following error is maximum about 6 counts > at high speed. The counts per rev is 2000. The highest speed is about 2000 > rpm above which the motor suddenly stalls and then a fault error is given. > > Is this maximum speed just the limit of the hardware, ie. driver and motor > at 45 V and 3 A?
Probably. 2000 rpm and 200 steps per rev (I think you can ignore microstepping for this calculation) is about 7kHz Phase inductance is about 4mH V = (H.A)/s. If we solve for phase current then at 2000rpm you only have enough voltage to push a peak current of 1.6A through the windings. Perhaps not the hard limit, but on the downward slope. -- atp ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
