Re: DC Motor Control: H-Bridge +5A, 48v

In article <uejd815mrbjj223kl4ogbpoffss01072ge@xxxxxxx>,
cdsmith69NOSPAM@xxxxxxxxxxxxx says...
> On Fri, 13 May 2005 23:40:12 -0400, R Adsett
> <radsett@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> >
> >We did run into an issue with plugging. It turns out that under certain
> >circumstances once you start plugging it will self sustain and the only
> >way to get it to stop braking is to open the direction contactors. The
> >motors we first tested on actually braked very nicely in that mode.
>
>
<snip>
> So, of course, the next "unofficial" experiment was to push one
> forklift with another, then have the one being pushed disconnect
> the battery. This worked well enough that the one being pushed
> could run all the functions including lifting and lowering the
> mast. As long as you held the control handle forward so the
> controller would keep the armature mosfets on, it would continue
> to work as a generator.
I like :), there is certainly a lot of energy in forklift weightd down
with 400-600AH batteries even a low speeds :)

Robert
.

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