Create an alert based on logged data points

Here's how to create an alert based on the history of logged data points in Evolo. This type of alert can be used, for example, to detect anomalies in energy consumption.

Written By Evolo Support

Last updated 1 day ago

Here's how to do it

Go to Settings and select Alarms.
Open the Settings tab.
Click Create New Alarm and select Log.
Select one or more log points.
Enter threshold values for when the alarm should be triggered.
Select the time period for which the alarm should be monitored.
If desired, add a relationship to a view.
Save the alert.

Fields

Log points: one or more log points to which the alarm applies. You can only select log points with numerical values that do not already have an alarm.
Name: the name of the alarm. If you select one log point, the name is automatically populated from the log point. If you select multiple log points, the name is set automatically.
Description: optional text about the alarm.
Low Alarm and High Alarm: the thresholds against which the alarm is checked. Enter at least one of them. Standard logs are checked against the average value for the period. Cumulative logs are checked against the total accumulated value for the period.
Period: Hour, Day, Week, or Month. The default is Day. The “Validity Period (hours)” option can only be selected with the “Hour” period, and “Validity Period (days)” can only be selected with “Hour” or “Day.”
Active: Check this box to enable the alarm. If unchecked, the alarm is blocked from new events.

Log – Value

Enter the low and high alarm thresholds. These thresholds determine when the alarm is triggered

Log – Period

Select the period for which the alarm should be checked.

If you select “Day,” the alarm checks the total value for the logged data point from the last day.

Advanced Settings

You can also configure:

Field	Description
Priority	Select the priority for the alarm: A, B, or C
Low Warning (Value)	Low threshold for the alarm to trigger as a warning
High Warning (Value)	High threshold for the alarm to trigger as a warning
Allowed Low Value (Value)	Lower limit for the alarm to trigger as "out of range"
Upper limit (Value)	Upper limit for the alarm to trigger as an out-of-range alert
Validity period (days)	Which days the alarm should be valid; if none are selected, it applies to all
Validity period (hours)	Which hours the alarm should be valid; if none are selected, it applies to all
Require acknowledgment after normalization	On by default. If turned off, the alarm is closed as “Not Acknowledged” when it is normalized without anyone having acknowledged it

Relationships

In the Relationships menu, you can link the alarm to a view. This allows the user to go directly to the correct view from the alarm table.

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