On Thursday 07 January 2016 11:02:06 andy pugh wrote: > On 7 January 2016 at 15:37, John Kasunich <jmkasun...@fastmail.fm> > wrote: > > Answering the only question that I can answer immediately: > > Second question: what is the nameplate amp rating of the motor? > > If this is a 30A motor drawing 18A, then the motor and load is > > probably fine and you need a VFD that can deliver 30A without > > tripping. If the motor nameplate says 15A, then the VFD is doing > > its job and protecting the motor from an overcurrent that might > > otherwise burn it up. > > The motor has no nameplate. However was supplied as a unit with the > Variator (Model M18, the same as a modern M318) > www.allspeeds.co.uk/wp-content/files_mf/brochure.pdf > > The manual states 5A / Phase @400V but I have rewired the motor for > 240V. > > (Maybe I should try wiring it back to 440V?) > That might be a good idea as a test. It would cut the motor current nominally in half.
> If I was to use a clamp ammeter, would I look at VFD input current or > an individual phase current? I am not 100% clear which the VFD is > displaying. 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> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
