RE: UPS issues

A test is an excellent suggestion. Probably should be tests at regular 
intervals. We used to schedule battery tests at least every six months. Cut the 
power and plot the voltage drop until systems died. If the graph of voltage vs. 
time changed markedly, it was time to order new batteries.

Obviously this is done off-hours and systems weren't processing when the tests 
were run.

Minor side-note... When multiple systems were running off the same (large) UPS, 
the AS/400 _always_ was the last to die.

Tom Liotta

midrange-l-request@xxxxxxxxxxxx wrote:

>   4. Re: UPS issues (Al Barsa)
>
>Believe it or not, computing uses very little power on these systems.  I
>suggest doing a test in a restricted state.
>
>                                                                           
>             "James H H Lampert"
>             01/02/2004 02:04 PM
>
>We just had to restart our main production AS/400, because the UPS
>self-test apparently detected a weak battery and raised the "weak batery"
>and "running on battery power" signals at the UPS monitoring socket on the
>back of the machine.
>
>Does anybody have any experience keeping a failed self-test from shutting
>down the system, while still allowing monitoring? The UPS is an APC
>Smart-UPS 2200, and the monitoring cable is the one APC supplies for
>AS/400s with 9-pin monitoring sockets.

-- 
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788 x313
Fax    253-872-7904
http://www.powertech.com


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