Configuring a Trend Alarm Rule on an Asset Definition

NI InsightCM™ 3.3 Help

Edition Date: December 2018

Part Number: 374498G-01

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Parent Topic: Learn More about Device Fundamentals

A trend alarm rule is a group of settings that cause NI InsightCM to set an alarm based on trend behavior.

Complete the following steps to configure a default trend alarm rule for an asset type:

  1. Navigate to the Asset Node Definition Editor and select a definition to edit from the list to the left.
  2. On the Trend Alarm Rules tab, click Add to display the Trend Alarm Rule dialog box.
  3. Choose the feature you want the rule to apply to from the pull-down menu in the top-left corner of the dialog box.
  4. In the adjacent pull-down menu, specify whether this alarm trips for trend values that are greater than or less than the compare value.
  5. Use one of the following two methods to define levels for the rule:
    • Define levels based on a value calculated from previously acquired data—.
      1. Place a checkmark in the Auto-configure levels from baseline checkbox.
      2. Click the Edit button that appears next the checkbox label to display the Auto-Configure Alarm Rule dialog box.
      3. In the Calculation pull-down menu, specify how you want the NI InsightCM web application to calculate the compare value.
      4. Click Add to display the Trend Alarm Rule Level dialog box.
      5. In the Severity pull-down menu, specify the urgency of the level.
      6. In the Compare To field, specify the initial value that the NI InsightCM web application uses to calculate the compare value for the level.
      7. (Optional) Place a checkmark in the Send Email checkbox to enable email options for the NI InsightCM web application to use when the alarm trips.
    • Define levels based on a set compare value—.
      1. Click the Add button in the Levels section to display the Trend Alarm Rule Level dialog box.
      2. In the Severity pull-down menu, specify the urgency of the level.
      3. In the Compare To field, specify the value to which you want the NI InsightCM web application to compare trend values.
      4. (Optional) Place a checkmark in the Send Email checkbox to enable email options for the NI InsightCM web application to use when the alarm trips.
  6. In the Operating State pull-down menu, choose whether the rule applies to all operating states or to one specific operating state.
  7. Set a value for On Delay to specify the amount of time, starting when trend values cross the compare value, that the compare value must remain crossed before the NI InsightCM web application sets the alarm.
  8. Set a value for Off Delay to specify the amount of time, starting when trend values cross the hysteresis value, that the hysteresis value must remain crossed before the NI InsightCM web application clears the alarm.
  9. Set a value for Hysteresis to specify an offset from the compare value whose value causes the NI InsightCM web application to clear the alarm when crossed.
  10. If available, use the following options to override the collection settings determined by an operating state:
    • Use default collection length—Uncheck this option to enable the File Length and Pre-Trigger Length options. InsightCM uses the values you set for these options when the alarm condition is triggered and when the alarm severity changes.
    • File Length—Specify how many seconds of data to collect while the alarm rule is active.
    • Pre-Trigger Length—Specify how many seconds of data to collect before the event that triggers the alarm rule.

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