Behavior on overload
The following table explains how the uninterruptible power supply responds to an
overload condition.
Table 9. Behavior on overload
Overload severity
Level 1
Level 2
Level 3
Configuring load segments
Load segments are sets of receptacles that can be controlled through the LCD, by
the network management card, or by power-management software, providing an
orderly shutdown and startup of the connected devices. For example, during a
power outage, you can keep key devices running while you turn off other devices.
This feature enables you to save battery power. For more information, see your
power-management software documentation.
Each uninterruptible power supply has two load segments. The load segments for
each uninterruptible power supply model are shown in the illustrations in "Rear view
of the uninterruptible power supply" on page 8.
Controlling load segments through the display
To control the load segments through the display, complete the following steps:
1. From the main menu, press the down (
2. Press the down (
3. Press the down (
4. Press the down (
5. Press the OK button for 1 second to confirm.
6. Repeat step 3 to step 5 to set the other load segment, if applicable.
Configuring automatic start delay
You can configure the load segment to turn on automatically after the utility power
returns, if it was shut down by any of the following means:
v The on/off button
v An external command with the auto-restart option
v Battery under voltage state
v Automatic on battery shutdown command
26
1000 VA and 1500 VA LCD Tower UPS: Installation and Maintenance Guide
Load level
100% to 101%
102% to 110%
> 110%
and press the OK button.
) button to scroll to Load Segments, and press the OK
button.
) button to scroll to the load segment that you want and
press the OK button.
) button to set the load segment to On or Off.
On utility power
Overload alarm only and
support load indefinitely
Shut down in 2 minutes
Shut down in 300
milliseconds
) button to scroll to the Control menu,
On battery
Overload alarm only,
support load until low
battery shutdown level is
reached
Shut down in 12 seconds or
until low battery shutdown
level is reached
Shut down in 2 seconds