Re: [Emc-users] 1.5 kw vfd in 6040 problems

[Gene H. <ghe...@sh...>]

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 <bod...@gm... wrote:
> > On Wed, 23 Jan 2019 at 22:27, Gene Heskett <ghe...@sh...> 
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
> >
> >
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Cheers, Gene Heskett
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