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7-2
Alarm Configuration
7.1. The Over Current Alarms
The Over Current Alarms are designed to inform you when current consumption
reaches or exceeds user-defined levels. Depending on the specific MPC model, MPC
units can have up to four Over Current Alarms (two sets of two alarms):
• The Over Current Line (Initial) Alarm
• The Over Current Line (Critical) Alarm
• The Over Current Branch (Initial) Alarm
• The Over Current Branch (Critical) Alarm
Note: The Over Current Line Alarms are not included in MPC units that include
two input circuits.
This provides a maximum of two sets of alarms (Line and Branch) with each set
including an initial threshold alarm and a critical threshold alarm. The Line alarms
generally monitor the load on the input line, and are only available on single input units,
whereas the Branch alarms monitor the load on each branch circuit breaker. Note that
some MPC models may refer to the Branch as a "Bus."
The Initial alarms are used to provide notification when the level of current consumption
reaches a point where you might want to investigate it, whereas the Critical alarms can
provide notification when the level of current consumption approaches the maximum
allowed level. The trigger levels for the Initial alarms are generally set lower than the
trigger levels for the Critical alarms.
If the user-defined trigger levels for current load are exceeded, the MPC can
automatically shut off power to non-essential devices ("Load Shedding") in order to
decrease current load. After Load Shedding has taken place, the MPC can also restore
power to the non-essential devices when current load drops to user-defined acceptable
levels.
Notes:
• In order for the MPC to provide alarm notification via Email, communication
parameters must first be defined as described in Section 5.9.11.
• In order for the MPC to provide alarm notification via Syslog Message, Syslog
parameters must first be defined and Syslog Messages must be enabled as
described in Section 5.9.2 and Section 11.
• In order for the MPC to provide alarm notification via SNMP Trap, SNMP
parameters must first be defined, and SNMP Traps must be enabled as
described in Section 5.9.7 and Section 12.
To configure the Over Current Alarms, access the MPC command mode using a
password that permits Administrator Level commands, and then proceed as follows:
• Text Interface: Type /AC and then press [Enter] to display the Alarm Configuration
Menu. From the Alarm Configuration Menu, key in the number for the alarm that
you wish to configure and then press [Enter].
• Web Browser Interface: Click the "Alarm Configuration" link, located on the left
hand side of the screen to display the Alarm Configuration Menu. From the Alarm
Configuration Menu, click on the link for the alarm that you wish to configure.