<snip> > Hi Jon, > > Well lets just say the only thing that I am sure about is the > drive is under-damped. > > ;) > > Tuning is proving to be insanely difficult for me, I guess > mostly because I don't really have much of a clue what I am > doing. It is also kind of scary because if I turn a POT on > the Gecko just a tad in the wrong way the drive violently > rattles the whole table. > > When it was just the Gecko, that was something I had a grip > on. But now it is a combination of the Gecko and the PID settings. > > It may be that I am just trying to accelerate the drive > faster than the system can adequately damp it. This gantry is > probably close to 200 pounds, and I just don't know how fast > I can expect to be able to accelerate it. > > Does gearing a drive help with this? I seems in my mind it > should. Gearing it down further would give me increased > torque and resolution so seems like a win win. > > In the meantime, I will try turning the gain POT down and the D up? > > > Best, > > Jeshua Lacock
Is this a G320 or a G320X? If it is a G320X there are internal DIP switches that can be used to reduce the torque gain which might help with stability. Do your encoders have selectable resolution? A lower resolution might also help tame the excessive response. Regards, Steve Stallings ------------------------------------------------------------------------------ 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
