Black Box MPSH16-D20-120V 用户手册

 

•  Subject:  This parameter is used to define the text that will appear in the 

"Subject" field for all email notification messages generated by the alarm.  

(Defaults =  "Alarm: Over Current (Initial)" or "Alarm: Over  

Current (Critical)")

•  Load Shedding:  Provides access to a submenu which is used to configure 

and enable the Load Shedding feature for the Over Current Alarm.  When 

Load Shedding is enabled and properly configured, the Outlet Managed PDU 

will switch user-selected plugs On or Off whenever the current load exceeds 

the Alarm Set Threshold value.  If the Auto Recovery feature is enabled, the 

Outlet Managed PDU can also return these user-selected plugs to their prior 

status when current load falls below the Alarm Clear Threshold value.  For 

more information on the Load Shedding Feature and Auto Recovery, please 

refer to Section 7.1.1.

7.1.1.  Over Current Alarms - Load Shedding and Auto Recovery
The Load Shedding feature is used to switch specific, user-defined, non-essential 

plugs On or Off whenever current load exceeds the Alarm Set Threshold value.  This 

allows the Outlet Managed PDU to automatically shut Off plugs in order to reduce 

current load when the load approaches user-defined critical levels.  When the Auto 

Recovery feature is enabled, the Outlet Managed PDU can also automatically "undo" 

the effects of the Load Shedding feature when current load again falls to a user-

defined non-critical level.

The Outlet Managed PDU also allows you to define separate Load Shedding/

Recovery actions for an Over Current Branch Alarm and an Over Current Line 

Alarm.  For example, if the Line Alarm is triggered, Load Shedding can switch Off 

Plugs A1 and B1, yet when the Branch  "A" Alarm is triggered, the Outlet Managed 

PDU can switch Off Plugs A1 and A2.

Together, the Load Shedding and Auto Recovery features allow the Outlet Managed 

PDU to shut off power to non-essential devices when the current load is too high, 

and then switch those same non-essential devices back On again when the load falls 

to an acceptable level.

Note: