Re: Question about how to set up VFD for braking resistor

Good point!

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "cnc_4_me" <cnc4me@g...>
wrote:

>
> I do not have a answer to your braking resistor question, but there
> was a thread on VFD on bridgeports a week or so ago...It was

pointed

> out if you slow the motor down more than 50% you are loosing a lot

of

> your cooling power of the motor mounted fan...Watch motor temp and
> mount a external fan if needed...
>
> Wally
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "washcomp" <jeff@w...>

wrote:

> >
> > I've just installed an Omron/Yaskawa G5+ variable frequency drive
> on
> > my Bridgeport. I intend to control it from MACH3.
> >
> > The good news is the VFD is working like a champ (manually –

still

> > haven't controlled it yet from MACH3). Maybe I misunderstood

about

> > the noise, or maybe the load side reactor is doing its job

because

> it
> > sounds just like a Bridgeport 2J
> >
> > I've installed a breaking resistor. I'm trying to figure out

what

> > braking mode and deceleration I should pick if I'm using a

braking

> > resistor. Both manuals (Omron and Yaskawa) refer to it, but
> neither
> > explicitly says what function to select (DC injection braking
> > maybe?) Any help would be appreciated on this.
> >
> > I've attached links to the two manuals to the Omron/Yaskawa G5
> > (Yaskawa is a better manual, but Omron has more on braking).
> >
> >
> >
>

http://www.yaskawa.com/site/dmdrive.nsf/SearchV/86256EC30069E43286256C

> > C8006E080F?OpenDocument
> >
> > http://www.idmcontrols.com/downloads/manuals/G5+_Manual_0103.pdf
> >
> > I've still got to tweak MACH3 a bit more (I mis-understood some

of

> > the OEM codes and have to change them), but then I'm about done
> with
> > my retrofit (exactly two years and two redo's of the controls)

and

> > have no more excuses to prevent me from turning out copious
> > quantities of parts (not sure what those are, but everyone says
> > that's what you're supposed to make with one of these things <G>)
> >
> > Regards,
> > Jeff