I tested a Nema 23 two stack stepper (bipolar) in closed loop with EMC2 lately. The stepper driver is a Gecko 251 at 45V and 3A. The encoder is an AMT102 connected TTL to a MESA 5i20 (P2) through a 7i33. The G251 step/dir signals are connected directly to the 5i20 (P4). The objective was to see how the motor performs at high speed in closed loop control.
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? The pulse length is sufficiently small at 2 us. The base thread is 20000. Rudy __________ Information from ESET Smart Security, version of virus signature database 4930 (20100309) __________ The message was checked by ESET Smart Security. http://www.eset.com ------------------------------------------------------------------------------ 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
