Yes it is a common DC drive for the spindle and all the axis. I've had a good meter on the DC buss and can not see any voltage fluctuation of any magnitude when starting up the spindle. And yes it is a 600VDC buss.
I'll go for the brushes next break in the action I have... I see a bit of time to do that in about a month. Are the brushes special? Or where did you get them? Thanks for the ideas John On 8/18/2011 11:18 AM, Dave wrote: > Sounds like you have a common DC bus between your spindle drive and your > Z axis drive? > > If the DC bus dips too far, the drive will shutdown. > > You may want to put a meter on the DC bus and run the drives and see if > the bus isn't dipping just prior to the shutdown. Make sure you use a > good meter - a 400 volt AC input power supply will have about 600 volts > of DC bus voltage. > > All drive systems have their limits. Perhaps they slightly undersized > the DC power supply section on that drive system? > > On my lathe I have a 611 spindle drive and I was tripping the drive out > frequently, I ended up pulling out the spindle motor and I replaced all > of the brushes which were obviously shot, and I polished up the > commutator and it now runs > perfectly. I just did that a few months ago. > > Dave > > > > On 8/18/2011 11:29 AM, John Thornton wrote: >> I have a BP Discovery 308 with Simodrive 611 drives for the axis and >> spindle. There seems to be a broader range of drive/motor guys that >> follow the mailing list... so I'm posting the question here. >> >> My symptom is when I try and accellerate the spindle from 0 to>2400 rpm >> in one step the drive faults out with a generic fault. Sometimes when >> running the mill at 6000 RPM for a while (so good and warm) a Rapid Z up >> will give the same fault. I can ramp up to 6000 RPM by starting at 2000 >> RPM using 100 RPM increments with a G4 of 0.1 between. >> >> I've opened up the power supply section and replaced all the caps >> recently and that did not have any effect on the symptom. >> >> Would there be any reason to dig into the spindle and try and check the >> brushes? >> >> Thanks >> John >> >> ------------------------------------------------------------------------------ >> Get a FREE DOWNLOAD! and learn more about uberSVN rich system, >> user administration capabilities and model configuration. Take >> the hassle out of deploying and managing Subversion and the >> tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> > > ------------------------------------------------------------------------------ > Get a FREE DOWNLOAD! and learn more about uberSVN rich system, > user administration capabilities and model configuration. Take > the hassle out of deploying and managing Subversion and the > tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Get a FREE DOWNLOAD! and learn more about uberSVN rich system, user administration capabilities and model configuration. Take the hassle out of deploying and managing Subversion and the tools developers use with it. http://p.sf.net/sfu/wandisco-d2d-2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
