APC 900XL Power Supply User Manual


 
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5.0 Operation
5.7 Extended capabilities
The following sections briefly describe the UPS’s extended capabilities. These advanced
functions are accessed by a computer running optional PowerDoctor or PowerChute plus
UPS monitoring software. See the UPS monitoring software literature for more informa-
tion on the application of these functions.
Note: The extended capabilities of the UPS and operation of UPS monitoring software
may be altered or amended without notice.
5.7.1 Status reporting
General - When queried, the UPS reports its electronics serial number, version number,
date of manufacture and date of last battery replacement.
Operating status - When queried, the UPS reports its current operating status.
Reported modes includes on-line, on-battery, Smart Boost, overloaded output, low
battery, shut down and internal fault.
Test results - When queried, the UPS reports the stored results of the last automatic or
manually initiated battery test. The user may also test the operation of the UPS’s visual
and audible indicators.
5.7.2 Monitoring
Line voltage and frequency- The UPS continuously monitors the rms line voltage and
the line frequency. Transients lasting less than 0.5 seconds are not reported. This
information can be logged using UPS monitoring software, plotted using any spreadsheet
application and used to identify transient power quality problems over extended peri-
ods.
Minimum and maximum line voltage - The minimum and maximum line voltage is
recorded to provide a snapshot of power quality over a user specified interval. Transients
lasting less than 0.5 seconds are not recorded.
Output power - The UPS continuously monitors the power consumed by the load. The
value given is a percentage of the full load rating of the UPS. This information can be
logged using UPS monitoring software, plotted using any spreadsheet application and
used to determine load usage over extended periods.