i'm in an apt, so i'd have to luck out and find to wall strings on different legs for dopple volts.
--- On Thu, 3/8/12, Kirk Wallace <kwall...@wallacecompany.com> wrote: > From: Kirk Wallace <kwall...@wallacecompany.com> > Subject: Re: [Emc-users] IRAMS Plan, FAN7382 with BUZ11 > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Date: Thursday, March 8, 2012, 11:41 AM > On Thu, 2012-03-08 at 03:19 -0800, > charles green wrote: > > it is a cost sensitive application, as always, and > limited to single > > 115v phase mains supply. there are the sherline > spindles/motors with > > decent speed controls, but sherline stuff is kinda > spendy. i dont > > recall seeing any retail vfd pages, but i'm thinking in > the many H$ to > > a K$ or so for a drive, and the smaller power motors > i've come across > > replacing are a few hundred on their own. in > contrast, a bench > > grinder from a home store or walmart can go as low as > $40. ..hmm. i > > wonder how hard it would be to rewind one? > > In the US, 240 Volts AC is available from a dryer outlet and > 240 VAC > usually runs to the kitchen for an electric oven, so there > may be a way > to get 240 to where you need it that isn't too hard to rig > up. I have a > 40 Amp dryer type extension cord that I plug my machines > into. It's not > very convenient because I can only run one machine at a > time, but it > works for now. > > I also have a large transformer that can boost 120 VAC to > 240 VAC. With > 120 VAC outlets rated for 15 Amps max., I can only get 7 > Amps of 240 VAC > from the transformer, but this is enough for testing most of > my VFD's. > This one is similar: > http://www.ebay.com/itm/290647166101 > > eBay has some cheap VFD's: > http://www.ebay.com/itm/290580719222 > > Motors are a problem, but this might work: > http://www.ebay.com/itm/170795747608 > > it runs on 120 VAC three phase, so a VFD would need to be > set up to > limit the output voltage, but that's easy to do. > > DC treadmill motors work well with KBIC type speed > controllers but these > can be harder to find and can be more expensive. > > I tend to look at what I have on hand or what I can find on > trash day or > in dumpsters before I start looking at new stuff. > > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > ------------------------------------------------------------------------------ > Virtualization & Cloud Management Using Capacity > Planning > Cloud computing makes use of virtualization - but cloud > computing > also focuses on allowing computing to be delivered as a > service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
