Western Telematic MPC-20VS20-1, MPC-20VD20-2, MPC-20VD20-1, MPC-20VS20-2 The Over Current Alarms

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.

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