RE: UPS & AS/400 talking to each other

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Exactly what does this cable hook up to on the AS/400?  Do you have to
order a special card?

Dan Bale
IT - AS/400
Handleman Company
248-362-4400  Ext. 4952
D.Bale@Handleman.com

> -----Original Message-----
> From: Alan Addison [SMTP:ahaddison@home.com]
> Sent: Friday, September 21, 2001 3:06 PM
> To:   midrange-l@midrange.com
> Subject:      RE: UPS & AS/400 talking to each other
>
> One also has to watch for the correct cable for the AS/400.  If you
> don't
> have the proper one, then the AS/400 will shutdown immediately on
> getting
> the signal from the UPS that it is on backup power
>
> Alan Addison
>
> -----Original Message-----
> From: midrange-l-admin@midrange.com
> [mailto:midrange-l-admin@midrange.com]On Behalf Of Jim Langston
> Sent: Friday, September 21, 2001 2:35 PM
> To: midrange-l@midrange.com
> Subject: RE: UPS & AS/400 talking to each other
>
>
> We had ordered a UPS for our AS/400 and I started looking at the
> system settings for UPSes and asked the same question you did,
> how the heck does the AS/400 know how much power the UPS has?
>
> I received the AS/400 UPS and got my answer, there is indeed a
> communications cable that goes from the UPS to a special port
> on the AS/400.
>
> My understanding, without this cable, the AS/400 has no idea
> it's even on a UPS.  So CALC would be ignored, and any other
> settings dealing with UPSes.
>
> You should look at your UPS and see if there is a communications
> connector on it (I seem to recall it was a db9, although it might
> of been a 25 pin).  If it doesn't, your UPS is probably not
> designed with the AS/400 in mind.
>
> Also, since the AS/400 shut down immediately upon the power to
> the building being shut down, that makes me think your UPS is
> not powerful enough to run the AS/400.  Most likely the AS/400
> power supply saw a drop of AC voltage below it's minimum safety
> limit and shut off (I could be wrong on that, but I know that's
> how many other computer's power supplies work).
>
> I think you have a little research to do on both your current
> UPS and it's capabilities, and what the AS/400 requires for a
> UPS.
>
> Regards,
>
> Jim Langston
>
> Message: 1
> Subject: UPS & AS/400 talking to each other
> Date: Fri, 21 Sep 2001 12:57:52 -0400
> From: "Bale, Dan" <D.Bale@handleman.com>
> To: <MIDRANGE-L@midrange.com>
> Reply-To: midrange-l@midrange.com
>
> Somewhat related to my last post on SPCN...
>
> I noticed that my QUPSDLYTIM system value is set to *CALC.  How does
> the
> AS/400 know how much juice is left to be able to determine whether it
> needs to start shutting down?  Is there another cable that allows the
> UPS and AS/400 to communicate this information?  I don't think our
> UPS's
> have that, or if they do, they were never set up to do this.  If a
> comm
> cable is required, then what is the effect of the *CALC setting?
>
> Background for all this:  Last night, one of our branches cut power to
> the building to install a new A/C unit (unbeknownst to us), relying on
> the UPS to keep all of the computer equipment up for the "short" time
> that the electricity was going to kept off.  I was told by the branch
> manager that the AS/400 lost power immediately after the building
> power
> was turned off.  While the building power was off, we powered the
> AS/400
> back up, so this is how I know that the AS/400 was attached to the
> UPS.
> The IPL was proceeding when the UPS got completely drained 15 minutes
> later and then all equipment on the UPS went down.  Main power was
> restored shortly thereafter, the AS/400 IPL'd normally (!), got a
> signon
> screen within 20 minutes (a normal IPL for this box), nothing
> "damaged"
> as far as I could tell.
>
> Lessons learned:  Don't power the AS/400 back up until after main
> power
> was restored.  WHAT THE @#%* WAS I THINKING?
>
> Dan Bale
> IT - AS/400
> Handleman Company
> 248-362-4400  Ext. 4952
> D.Bale@Handleman.com