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CHAPTER 7: Alarm Configuration
111
7.2.1. Over Temperature Alarms - Load Shedding and Auto Recovery
For Over Temperature Alarms, the Load Shedding feature is used to switch specic,
user-dened plugs On or Off whenever temperature exceeds the Alarm Set Threshold
value. This allows the Outlet Managed PDU to automatically shut Off non-
essential devices in order to reduce the temperature generated within the rack, or
automatically switch On devices such as fans or cooling systems in order to dissipate
heat. When the Auto Recovery feature is enabled, the Outlet Managed PDU can also
automatically "undo" the effects of the Load Shedding feature when the temperature
again falls to a user-dened non-critical level.
Note:
Load Shedding Configuration Menus for both the Initial and
Critical Over Temperature Alarms offer essentially the same set of
parameters, but parameters defined for each alarm are separate
and unique. For example, parameters defined for Over Temperature
(Initial) Alarm Load Shedding will not be applied to Over
Temperature (Critical) Alarm Load Shedding and vice versa.
The Load Shedding Conguration menus allow you to dened the following
parameters:
• Unit to Congure: In some compatible power control products, this item is
used to select either a local unit or an auxiliary unit. In Outlet Managed PDU
series products, this option has no function. (Default = Local.)
• Enable: Enables/Disables Load Shedding for the Over Temperature Alarm.
When enabled, the Outlet Managed PDU will switch the user specied plugs
whenever the temperature exceeds the Alarm Set Threshold value.
(Default = Disable.)
• Plug State: Determines whether the selected plugs/plug groups will be
switched On or Off when Load Shedding is enabled and temperature exceeds
the user-dened Alarm Set Threshold. For example, if the Plug State is set
to "Off", then the selected plugs/plug groups will be switched Off when the
Alarm Set Threshold is exceeded. (Default = Off.)