I'm deciding on what servo drive to use with the mesa FPGA card and it doesn't look too bad since there are not too many low cost options. I'm constrained to a NEMA 23 size motor since a NEMA 23 stepper is on the machine right now and I want it to be a direct swap. So far I've found from searching on google and from people's suggestions here on the mailing list:
Drives ------- [brushless] Pico Brushless PWM Servo Amp $150 [brushed] Pico PWM Servo Amplifier $125 Motors -------- [brushless] Pico Size 23 Brushless Servo (61ozin continous, 180ozin peak, 1000 CPR) $120 [brushless] Keling KL23BLS-115 Brushless Servo (61ozin continous, 180 ozin peak, 1000 CPR) $134 [brushed] Keling KL23-130-60 Brushed Servo (50ozin continous, 350ozin peak, 1000 CPR) $162 Not Suitable ------------- dmm-tech.com -- RS232 based communication not PWM gecko -- EMC2 cannot control PID loop (step/dir input, not pwm) viper -- EMC2 cannot control PID loop (step/dir input, not pwm) rutex -- EMC2 cannot control PID loop (step/dir input, not pwm) Most of the servo drives I have found have the PID loop built into them. Is this the normal case? Is it possible to run a brushed DC servo with just a simple H-Bridge controlled directly by the PWM output and a direction signal? I was looking at the Freescale MC33886 which I think could make a very simple and cheap H-Bridge. http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MC33886VW-ND <http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MC33886VW-ND> Anybody know of any companies or products I may have missed in my search? ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
