Re: Wiring a UPS to a Power 720 8202-E4C

[Buck Calabro <kc2hiz@xxxxxxxxx>]

On 5/30/2013 11:38 AM, Roberto José Etcheverry Romero wrote:
> on the same page, i've found that most UPS come with a cable that's the
> same of the one avaiable on the end of the 1827 adapter i dont remember
> right now but if the adapter ends in a male connector the cable also has a
> male connector. Is it me or that is wrong? i'm about to MAKE the cable
> since i just cant use the standard parts...

Based on Figure 3, the 1827 has a female on each end, carries pin 7 from
the UPS to pin 1 of the 720 and connects pin 2 on the 720 to pin 7 on
the 720.  Check your UPS cable - if you see a short between pins 2 and 7
you should be OK to plug it in to your RJ45 adapter.

> On Thu, May 30, 2013 at 12:34 PM, Buck Calabro <kc2hiz@xxxxxxxxx> wrote:
>
> > On 5/30/2013 11:13 AM, DrFranken wrote:
> > > YES you need both. Also you will need to power cycle the server once the
> > > cable are connected for it to recognize the UPS is there.
> >
> > Ah, well, I was hoping the RJ45-DB9 female had the pins mapped, because
> > none of the docs mention a DB9 female.
> >
> > I located an RJ45-DB9 male; should I use that and make up a DB9 f-f (and
> > map the pins)?  Or should I leave the RJ45-DB9 f on the server and make
> > up a DB9 f-m (and map the pins)?
> >   --buck
> >
> > > On 5/30/2013 11:10 AM, Roberto José Etcheverry Romero wrote:
> > >
> > > > i believe you need both adapters, the rj45 to db9 and the db9 to db9. At
> > > > least thats what APC user manual claims.
> > > >
> > > > Best Regards
> > > >
> > > >
> > > > On Thu, May 30, 2013 at 12:05 PM, Buck Calabro <kc2hiz@xxxxxxxxx>
> > wrote:
> > > > > The UPS has a communications cable coming out of it which terminates in
> > > > > a DB9 male.  Pins 5-9 are populated.
> > > > >
> > > > > The server has an adapter cable IBM p/n 46K5108.  One end is an RJ45
> > and
> > > > > that end is plugged into port S2.  The other end is a DB9 female.
> > > > >
> > > > > It would seem like a no-brainer to plug the DB9 male from the UPS into
> > > > > the DB9 female coming from the Power 7, but I'm wary of that because
> > the
> > > > > Power 7 Systems Hardware information guide
> > http://pic.dhe.ibm.com/infocenter/powersys/v3r1m5/index.jsp?topic=/p7had/p7hadups.htm
> > > > > doesn't mention an RJ45 cable with a DB9 female.
> > > > >
> > > > > It DOES mention a f/c 3930 adapter from RJ45 to DB9 male and it also
> > > > > mentions a f/c 1827 adapter cable which is a DB9 female to DB9 female.
> > > > > It seems to me that the f/c 1827 is necessary to tell the service
> > > > > processor a UPS is attached because it ties pins 2 and 7 together on
> > the
> > > > > server side.
> > > > >
> > > > > My system order shows that I ordered an 1827 but of course I can't
> > > > > locate it from 9 months ago.  I can make one up easily enough, so
> > that's
> > > > > not a show stopper.
> > > > >
> > > > > Do I trust the manual or is there a newer reference I should be looking
> > > > > at?  I'm not plugging anything into the back of the server until I am
> > > > > convinced that it's OK to do so.
> > > > >    --buck