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

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