On Friday 29 January 2016 16:36:36 John Kasunich wrote: > Very few VFDs are actually designed as single-phase input. > They use three-phase rectifiers, but size the diodes and caps > such that they can handle the additional stresses of running > on single phase with only two of the three incoming wires > connected. Consult the manual (assuming it is in a readable > dialect of Chinglish) to find out how they want you to wire it. > > In the absence of a manual, I'd probably connect one input > to L1 and L3 (this runs the L1 and L3 diodes in parallel, you > might as well use the silicon if it is there), and the other input > to L2. > > Or just connect to L1 and L2, and ignore L3.
The guy just replied to my fuss msg, John K., telling me the same thing, hook it up to R & T, leaving S open. So I will. And I went back to Lowes and traded the dual 15 SquareD back in on a dual 20 SquareD-HOM, which does fit my service. 20 is overkill but they have nothing smaller in the homeline series. Perhaps I'll get a circuit run and can test it with the motor strapped to something over the weekend. I probably should have bought 10 feet of a 16 or even 18 gauge 600 volt SJ or whatever has replaced it these days, for the motor cable. 14/3 romex will definitely NOT fit in the plug furnished in the back of the motor. I have a drop cord the lawn mower cut up a couple times, the orange round 3 wire type. Can that stuff take the motors running voltages? Silly Q (maybe): Can that 0-5 volt range input this VFD has filter a 5i25's 20 kilohertz PWNGEN output well enough to feed it in there raw, or must I use a Mesa Spin-X1 to do the PWM->analog? Possibly with a couple k-ohms of current limiter in series in case there is a capacitor right in that input terminal. I have asked the vendor this same question, but he hasn't had time to reply. Or has anyone ever tried that? Thanks John K. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
