On 08/08/2012 01:50 AM, Peter Blodow wrote: > The only problem is that speed is very limited to about 3.5 kHz max. > which keeps the machine slow. So, after about 15 years of service, I am > looking for a more modern board with a little more power (esp. in > voltage). Thanks for the hints. When stepper speed is the issue, the inductance of the stepper windings, and resonance control are the two biggest issues. It still amazes me that companies that have a range of steppers based on one frame list inductances from about 1.7mH on out to about 45mH. With sub 2mH coils, one can get pretty quick performance, when you get out above 25mH any decent latency test results won't be the speed limiter.
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Stepper_Motor_Speed_Limitations ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
