Western Telematic MPC-20VS16-3 - Manual (Page 118)

7-7
Alarm Configuration
7.1.1.2. Load Shedding & Auto Recovery Configuration - Web Browser Interface
In the Web Browser Interface, Load Shedding and Auto Recovery parameters are
defined as follows:
1. Access the Over Current Alarm Configuration Menu as described in Section 7.1.
2. At the Over Current Alarm Configuration Menu, use the two drop down menus next
to the Load Shedding button to determine the Local/AUX MPC unit and the desired
Branch or Line.
a) Local/AUX: ("Unit to Configure") When optional, remote MPC or BPM units
have been connected to your local MPC's AUX ports, this parameter is used to
select the Local or AUX unit that you wish to define Load Shedding parameters
for. (Default = Local.)
b) Branch/Line: Selects the configuration menu for the Branch A, Branch B or
Line Load Shedding actions. This allows you to define one set of actions that
will be performed when an alarm is triggered at Branch A, a different set of
actions that will be performed when an alarm is triggered at Branch B, and yet
another set of actions that will be performed when an alarm is triggered by the
Over Current Line Alarm.
Notes:
• The Over Current Line Alarm is only available in units that feature two or more
branches per input line.
• When an Over Current Alarm is triggered, the MPC will automatically perform
the set of actions that have been defined for the corresponding branch or
line.
3. After selecting the Local/AUX unit and power branch or line, click on the Load
Shedding button to select parameters for the selected unit/branch/line. The
resulting submenu will offer the following options:
• Enable: Enables/Disables Load Shedding for the selected unit and branch or
line. When enabled, the MPC will switch the user specified Plugs or Plug Groups
whenever the current load exceeds the user-defined 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 current load exceeds the user-
defined 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 at the selected unit/branch/line. (Default = Off.)
• Auto Recovery: Determines whether the selected plugs/plug groups will be
switched On or Off when Load Shedding is enabled and current load exceeds the
user-defined Alarm Set Threshold at the selected unit/branch/line. 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.)