Schneider Electric HRB1684301-01 Chapter Alarms, Alarm overview, Alarm types, Unary alarms

Chapter 10 Alarms

This section describes the meter’s alarms feature. An alarm is the meter’s means of notifying you when an alarm condition is detected, such as an error or an event that falls outside of normal operating conditions.

WARNING

UNINTENDED OPERATION

Do not use this device for critical control or protection applications where human or equipment safety relies on the operation of the control circuit.

Failure to follow this instruction can result in death or serious injury.

Alarm overview

When an alarm is tripped, the meter records the alarm event, and the alarm indicator appears on the meter display if it is a low, medium or high priority alarm. The alarm can also be used to trigger another event, such as controlling a digital output.

NOTE: If configured for alarms, the alarm / energy pulsing LED flashes when the alarm is tripped. See “LED alarm indicator” on page 99 to set up the LED for alarms.

Alarm types

The meter supports these types of alarms (total available indicated in parentheses):

•Unary (4)

•Digital (4)

•Standard (29)

•Logic (10)

•Custom (5)

Unary alarms

A unary alarm is the simplest type of alarm — it monitors a single behavior, event or condition.

Unary alarms

Alarm label	Description
Meter Power Up	Meter powers on after losing control power.
Meter Reset	Meter resets for any reason.
Meter Diagnostic	Meter’s self-diagnostic feature detects a problem.
Phase Reversal	Meter detects a phase rotation different than expected.

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