Dell Online Rack UPS (3750W and 4200W) User's Guide - E-pood

Retrieving the Event Log
To retrieve the Event Log through the display:
1 Press the button for one second to go to the main menu selection and scroll down to the
Event Log menu using the button.
2 Press the button to enter the Event Log list.
3 Scroll through the listed events, notices, and alarms using either the button or the button.
4 To return to the main menu, press the button for one second. The Event Log displays.
5 Press the button. The UPS status screen displays.
Behavior on Overload
See Table 7 for an explanation of how the UPS responds to an overload condition.
Table 7. Behavior on Overload
Overload
Load Level On Utility Power
Severity
Level 1
Level 2
Load 100% to
101%
Load 102% to
110%
Overload alarm only and
support load indefinitely
Transfer to Bypass after
12 seconds (±1 sec)
If Bypass is not available,
transfer to Fault mode after
12 seconds (±1 sec)
Level 3 Load > 110% Transfer to Bypass immediately
If Bypass is not available,
transfer to Fault mode in
300 ms to 1 sec
On Bypass/High
Efficiency Mode
Overload alarm only
and support load
indefinitely
Transfer to Fault mode
in 2 minutes (±1 sec)
Transfer to Fault mode
in 300 ms to 1 sec
On Battery
Overload alarm only,
support load until low
battery shutdown level
is reached
Transfer to Fault mode
after 12 seconds
(±1 sec) or until low
battery shutdown level
is reached
Transfer to Fault mode
in 300 ms to 1 sec
48 | Operation