On Wednesday 23 January 2019 17:48:20 Mark Wendt wrote: > And the data plate from the motor. Incorrect settings in the VFD can > and will result in the destruction of either the VFD or the motor or > both. The settings are quite specific to the motor ratings. Running > the motor slower than 6000 to 8000 RPM's will burn up the motor if > it's a high speed spindle. You can run a water cooled spindle slower > than an air cooled spindle but not by much before the windings burn > out. > > Incorrect settings on other VFD parameters can and will destroy the > VFD. The manual is quite important to have setting the VFD up and you > shouldn't try to power the spindle up without the correct settings > programed into the VFD. > > Mark > This seems to be defaulted to quite conservative settings. With the low speed boost backed off, default is 4 and probably too much, it should be able to run slower than that by quite a bit. I can run the 1hp in my sheldon at 10hz for an hour or more without getting so warm I can't lay a hand on it. I never exceed the nameplate fla of a motor at any speed. It will get warm, but the torque seems to hold up well enough to cut steel.
Thanks Mark. > On Wed, Jan 23, 2019, 17:33 andy pugh <[email protected] wrote: > > On Wed, 23 Jan 2019 at 22:27, Gene Heskett <[email protected]> wrote: > > > Many thanks for any clues from someone WHO HAS ACTUALLY DONE this. > > > > Without any hint of what model VFD this is, or a glimpse of the > > manual, I doubt anyone will be able to help. > > > > -- > > atp > > "A motorcycle is a bicycle with a pandemonium attachment and is > > designed for the especial use of mechanical geniuses, daredevils and > > lunatics." > > — George Fitch, Atlanta Constitution Newspaper, 1916 > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
