Hi Gene some reports on ATS-667 " What I found is that the polarity of the output is not the same when the unit is powered with a tooth in sensing range as it is when a tooth is not there! "
http://www.msextra.com/forums/viewtopic.php?f=131&t=45528 and suggests a similar product from Honeywell http://sensing.honeywell.com/1gt101dc-hall-effect-gear-tooth-sensor-88720-sep91-install.pdf or this one from taiwan http://www.chiarey.com/products-en.html look for Guboa HiSpeed sensors just fyi tomp On 07/22/16 11:43, Gene Heskett wrote: > On Thursday 21 July 2016 23:54:31 Gene Heskett wrote: > >> Greetings all; >> >> Just for S&G I stopped at the place that still has that old Porter >> lathe he wanted $500 for a couple years ago. About a 16"er, 6 foot or >> more bed, but no motor. It would have been at least a year at my pace >> to bring it back to life. >> >> But that wasn't the surprise. That was in the form of an old air >> compressor he had taken as junk from the local horsepistol in a >> remodel/upgrade of some sort. One big horizontal tank, with two >> overhead pads on it, each of which held a single cylinder, 1 hp >> compressor, and each had its own 1HP 3 phase 230 volt Dayton motor >> that spun very freely and had no endplay, so since the bearing numbers >> were on the label, I have to assume ball bearing. I offered him 50 >> bucks for both of them. >> >> Next thing I knew, he was dragging out the cutting torch because the >> bolts were rusted and hard to get to, so both are sitting on my garage >> floor right now. >> >> I have company, 2 of my boys will be in Sunday thru Tuesday this next >> week, so we'll have to make a trip, maybe two, to the rifle range, but >> if I can find a round tuit before then, I'll have both of them >> clipleaded to that 1.5 HP rated inverter & see how they like running a >> bit faster than 60 hz for 1750 revs. >> >> In other words, I found a motor, and with luck a spare that I can run >> with linuxcnc for rigid tapping and such on this Sheldon. One more >> problem solved, although I may have to build a lock pin of some sort >> to keep from unscrewing the chuck with a quick reverse. And now I >> need to find where to put an encoder on it. More shade tree >> engineering I think. >> >> So things are looking up at a bit better angle. ;-) >> >> Cheers, Gene Heskett > I just went out and stared at it for a couple minutes, and something > along the lines of Jon's Bridgeport and the hall effect sensors Jon > Elson used looks doable. But with this motor potentially having the > ability to do 8k rpms with this inverter, and the big gear on the > spindle right behind the front bearing looks like a good candidate, but > this motor has the ability to turn the spindle well above the 1300 it > can do now (faster than I'd be comfy standing in line with it) and thats > about 10EE20 teeth a minute gong by a hall when its throwing lube oil 20 > feet. So my question is, since that gear must have at least 100 teeth, > are the halls that fast? > > I just pulled the allegro ATS-667 datasheet to see if I can get any > schmardter. Looking at that, 10u-s on delay, sub-microsecond off delay, > So it should to twenty kilohertz. So it should work up to anything I'd > be comfy around. I'll have to eyeball some more for an index trigger > though. > > Cheers, Gene Heskett ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports.http://sdm.link/zohodev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
