Gene, Antekinc.com is your best bet for torroidal power supplies in the power range you are looking for. I have used then on two builds so far with great results.
By the way, here on the west coast, the edit system parallel ports were used to print out the EDLs. (I was in on the beginning og the computer editing revolution!) --J. Ray Mitchell Jr. jrmitche...@gmail.com (818)324-7573 A foolish faith in authority is the worst enemy of truth. - Einstein On Thu, Aug 30, 2012 at 8:22 AM, Gene Heskett <ghesk...@wdtv.com> wrote: > On Thursday 30 August 2012 11:08:13 Matthew Herd did opine: > > > >> Anyway, I've got some Parker OEM650 stepper drives on hand and would > > >> like to use those for my retrofit, but they will only accommodate > > >> phase inductances of 1 - 10 mH. Does anyone know what the > > >> inductances are for the Superiors and Sigmas? > > > > > > I can't answer this one with certainty, but the G203V tolerates 1-50 > > > mH and it works well with the steppers on my BOSS. > > > > Actually, I took a quick look at the specs for the parker drives. It > > seems the most it can handle is a NEMA 34. Looking at the specs on the > > Keling website for NEMA 34 & 42 motors, it seems that the inductance in > > series (what I suggest for lower current drives) is going to be > > significantly higher than 10 mH. I think they were consistently over > > 10 mH, with the 42's at like 64 mH. The BOSS motors should be in the > > same neighborhood, so they will probably be too high for the Parker > > drives. Just a little inductive reasoning here, I have never measured > > the motor inductance nor could I find reliable specs. > > Speaking in general terms here, a motor with an inductance of 64 mH is > going to need an expensive, very high voltage driver if its to dance to our > music, likely 300+ volts. > > The 425oz nema 23's I had to put in my lathe's x screw when I found the > smaller 50 oz wasn't up to the needed torque, were 8 wire, and in 4 wire > parallel mode the 2M542 driver is out of amps before it has full current, > but the speed is truly impressive for a stepper. I haven't explored its > speed limit since I got the ball screw usable just yesterday, but with that > screw, a 2.5mm pitch, 100 ipm seems within reach. I need a better power > transformer for that setup anyway, preferably a toroid that can supply 500 > watts into a FW bridge at 45 volts. They seem to be made out of > unobtainium though... This one, a conventional E/I core is telegraphing > its heat to everything else in the box, not at all good after several > hours. I'm asking it for about 6 amps at 39 VDC. > > 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) > My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! > UH-OH!! We're out of AUTOMOBILE PARTS and RUBBER GOODS! > > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ 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
