Igor Chudov wrote: > Secondly, is my recollection correct that EMC2 is easily capable of running > such a machine? > > Would one need to replace stepper drives or can they be used with, say, Jon > Elson's system? > The motors are a bit klunky, but serviceable. Typically, they are 11 A motors, though. The stock Bridgeport drives are GHASTLY, and you would be doing everybody a favor by trashing them. They are full-step drives with no current control. They use a magnetic amplifier to switch between idle current and running current. Many people have had fairly good luck with Gecko stepper drives, or there are apparently Leadshine (China) drives that can give rated current and handle higher voltage.
If you try to use the stock drives, you need to provide 4 signals per axis, although they are complementary pairs, so inverters can turn the wave drive into the 4 signals. Then, you need to provide the High-low current selection to the transistor for the mag amp based on whether the motor is below creeping speed or moving rapidly. Jon ------------------------------------------------------------------------------ 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
