Emerson Liebert PSA Line-Interactive UPS 500-1500VA User Manual

Liebert MultiLink constantly monitors the UPS and performs actions as specified in the configuration 

settings for each event (see 8.5 - Configuring—Event Configuration tab). 
Notification may appear on the screen in the form of a graphic (dialog box, or pop-up) or as text 

(console message).
Most events will be documented in the log file; some will trigger execution of a script or other program 

through the Command action, for example, to save files and close certain applications (available in 

Liebert MultiLink Advanced only); and some will begin an orderly shutdown of the operating system.
This section describes typical sequences for the following events:

• On Battery - utility power has failed and the UPS is supplying power to the computer 
• Low Battery - power drain has reduced the reserves of the UPS to a low level

Some notification and shutdown features may be altered, as described in 8.4.12 - Configure Menu - 

Options. For a complete list of events, see Appendix D - List of Events.