On Saturday, July 30, 2011 07:38:21 PM Steve Blackmore did opine: > On Sat, 30 Jul 2011 17:50:31 -0400, you wrote: > >Greetings all; > > > >My xylotex went pop,pop,pop when I hit the keyboard for a x move about > >2 hours ago. Also the odor of burnt parts was in the air. > > > >So, since this will be the 3rd xylotex to expire on me, I am inclined > >to look elsewhere for the next set of drivers. > > Hi Gene > > An all too common occurrence with Xylotex drives! Exceed 30V at your > peril, reach 35V and they always go pop. > Humm, 27.5 is what I have measured several times. The supply is not regulated as its a huge old boat anchor made out of an old Ampex 2" vcr power supply. Weighs about 30 lbs. Its filtering is a pi section with an unk inductance in the middle of a pair of 75,000 uf caps. Those caps are about the size of an old 'telephone' battery & in 50+ years I have yet to see one of those actually fail! But I will scope it before I hook the new drives up, there is always a first time. :)
All Electronics, in the event its miss-behaving, has some 9.5 amp, 28 volt switchers for a good price that might make a good replacement IF it will behave in the presence of all the noise from these drives. I have NOT had real great luck with that however. They do not like to absorb the motors circulating currents and may go into an over voltage shutdown. > >Looking at the Gecko G540, which isn't that much bigger, but would > >allow me to raise the motor voltage about 20 volts above what I have > >now. Its a package that puts 4 each 50 volt, 3.5 amp, 10 microstep > >G250's in an easily mountable package. I see I can get it for $242 + > >ship, which is more than the xylotex. > > > >What has been the general experience of this group with the G540? > > I've no personal experience of them but heard no complaints on the Mach > group or elsewhere. Even if you manage to blow one up, send it back > Geckodrive will fix it for free ;) > > Steve Blackmore Something to be said for that, I doubt this company will. That is why I bought an extra, insurance. ;-) > -- > > ------------------------------------------------------------------------ > ------ Got Input? Slashdot Needs You. > Take our quick survey online. Come on, we don't ask for help often. > Plus, you'll get a chance to win $100 to spend on ThinkGeek. > http://p.sf.net/sfu/slashdot-survey > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Nice guys finish last. -- Leo Durocher ------------------------------------------------------------------------------ Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
