Inductive reactance? ----- Original Message ----- From: "Neil Baylis" <[email protected]> To: "Enhanced Machine Controller (EMC)" <[email protected]> Sent: Wednesday, July 28, 2010 13:45 Subject: Re: [Emc-users] Quieting The Variable Frequency Drive (VFD) Noise.How To.
> Why would they call that a reactor, rather than an inductor? > > Neil > > On Tue, Jul 27, 2010 at 7:46 PM, Stuart Stevenson <[email protected]> > wrote: > >> I have seen reactors used to quiet a vfd. A reactor is merely a coil of >> wire. >> >> On Tue, Jul 27, 2010 at 3:57 PM, Andy Pugh <[email protected] >> >wrote: >> >> > On 27 July 2010 21:43, Don Stanley <[email protected]> wrote: >> > >> > > The solution was a 5% KDR filter from TCI in Milwaukee Wi in the VFD >> > > output. >> > >> > I suspect some ferrite beads on the output lines helped with my rather >> > troublesome VFD noise problem. Though I also added an input filter and >> > shielded power cables at the same time, so don't have the data to >> > deconvolve the various effects. >> > >> > The input filter was initially troublesome, tripping the ELCB in the >> > main supply. The solution I found was to power the VFD through a >> > zero-crossing SSR controlled by EMC2. As the mains voltage is always >> > zero at switch-on there is no current spike into the filter caps, and >> > no tripping of the breaker. So far it has been a 100% success for >> > about a year. >> > >> > -- >> > atp >> > >> > >> > >> ------------------------------------------------------------------------------ >> > The Palm PDK Hot Apps Program offers developers who use the >> > Plug-In Development Kit to bring their C/C++ apps to Palm for a share >> > of $1 Million in cash or HP Products. Visit us here for more details: >> > http://ad.doubleclick.net/clk;226879339;13503038;l? >> > http://clk.atdmt.com/CRS/go/247765532/direct/01/ >> > _______________________________________________ >> > Emc-users mailing list >> > [email protected] >> > https://lists.sourceforge.net/lists/listinfo/emc-users >> > >> >> >> >> -- >> dos centavos >> >> ------------------------------------------------------------------------------ >> The Palm PDK Hot Apps Program offers developers who use the >> Plug-In Development Kit to bring their C/C++ apps to Palm for a share >> of $1 Million in cash or HP Products. Visit us here for more details: >> http://ad.doubleclick.net/clk;226879339;13503038;l? >> http://clk.atdmt.com/CRS/go/247765532/direct/01/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > > > -- > http://www.pixpopuli.com > ------------------------------------------------------------------------------ > The Palm PDK Hot Apps Program offers developers who use the > Plug-In Development Kit to bring their C/C++ apps to Palm for a share > of $1 Million in cash or HP Products. Visit us here for more details: > http://p.sf.net/sfu/dev2dev-palm > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://p.sf.net/sfu/dev2dev-palm _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
