On 22 July 2012 02:29, John Kasunich <[email protected]> wrote: > I would like to drive them with a 5i20 and 7i39, and LinuxCNC's bldc HAL > component. I haven't really started digging into the docs yet, I was > just > wondering if anyone has any experience with these or similar motors.
I have run similar motors, it should be moderately straightforward. Inelegant as it might be, I tend to just run through the bldc patterns in halcmd to find which make the motor spin, then see which of those spin it best. You can start off in "h" mode, so that bldc.comp stays in trapezoidal/6-step mode while choosing the best Hall pattern, then change to "qh" mode and connect the encoder rawcounts pin if you want to use sinusoidal commutation. The 7i39 firmwares don't "claim" any pins for Hall sensors, simply leaving a gap in the pin allocation as gpio. This sometimes causes confusion. SVTP6_7I39.BIT is probably the firmware you want. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
