User Manual

28UPS Network Management Card 3 User Guide
Configuring your Outlet Groups
Outlet group name and type. View the name, type, and delays of your UPS outlets on the Configuration -
Outlet Groups screen. Click the name of an outlet group under Group to change its settings including
sequencing delays and load shedding options.
Sequencing settings. Settings vary by UPS device. Use the sequencing options to define how the UPS will
respond to user-issued commands.
Load-shedding options. Load shedding enables you to specify conditions that cause individual Switched
Outlet Groups to lose power.
NOTE: If you are using PowerChute Network Shutdown to manage your UPS, it is not
recommended to use the NMC load-shedding options, which may conflict with the Outlet Group
settings specified in PowerChute.
An example of using load shedding would be for turning off non-critical loads like monitors when the UPS is
running on battery or is overloaded. This would preserve the battery charge and the runtime for essential
loads. Another example would be to disable an automatic restart after an overload in order to investigate the
cause of the overload before turning the outlet group back on.
The options enable you to shut down an outlet group when ANY of the conditions that you specify are met:
• When the time on battery exceeds a set number of minutes.
• When the runtime remaining of the UPS is less than a set number of minutes. (Runtime is how long the
UPS can use battery power to support its present load).
• The UPS is overloaded (the power demand of the devices connected to the UPS exceeds the amount
of power the UPS can provide).
You can also enable these actions:
• Skip outlet off delay. (Turn the outlet group off immediately, without waiting the number of seconds
configured as Power Off Delay. By default, this option is disabled.)
• Stay off after power returns. (Remain off when AC utility power returns. By default, this option is
disabled, and the UPS waits the number of seconds configured as Power On Delay, then turns on the
outlet groups.)
Outlet group events and traps. A change in the state of an outlet group generates the event UPS: Outlet
Group turned on with a severity of Informational, or UPS: Outlet Group turned off with a severity of
Warning. The format of event messages is “UPS: Outlet Group group_number, group_name, action due to
reason”. For example:
UPS: Outlet Group 1, Web Server, turned on.
Field Description
Power Off Delay
When this outlet group is on, it waits this delay in seconds before turning off. By
setting different times here for outlets, you can sequence their turn-offs, that is, you
can specify the order in which they turn off.
Reboot Duration The outlet waits this amount of time before rebooting.
Power On Delay
When this outlet group is off and receives a signal to turn on, it waits this delay in
seconds before turning on. By setting different times here for outlets, you can
sequence their turn-ons.
Min Return
Runtime
The minimum amount of time the UPS must be able to support the load before it can
turn on again.