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Data Groups

NI InsightCM™ 3.1 Help

Edition Date: July 2017

Part Number: 374498D-01

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Parent Topic: Learn More about Device Fundamentals

When users configure a device in the NI InsightCM web application, they assign the device channels to one or more data groups. A data group is a set of channels mapped to sensors that monitor the same piece of equipment. Data groups are useful in situations where a single device connects to sensors whose data you want to acquire, analyze, and log according to different parameters. Consider the following simplified example where one device monitors two pieces of equipment.

Assigning the channels monitoring each piece of equipment to different data groups allows you to configure unique behavior for each group of channels even though they belong to the same device. The following example shows how defining separate data groups allows users to configure behavior that is appropriate for each piece of equipment.

Data Group Channels Speed Reference Operating States Data Set Collection Settings
Turbine
  • Mod1Ch0: Tachometer
  • Mod2Ch0: Accelerometer
  • Mod3Ch0: Accelerometer
Mod1Ch0 Run-Up
  • Enter state when RPM rises above 200
  • Collect a data set every 30 seconds and when RPM changes by at least 50
  • Write data sets whose length is 10 seconds
  • Exit state when speed is above 1200 RPM for 20 seconds or speed is less than 200 RPM for 20 seconds
Steady-State
  • Collect a data set once per hour
  • Write data sets whose length is 7 seconds, including 3 seconds of pre-trigger data
Motor
  • Mod5Ch0: Displacement (Proximity probe)
  • Mod6Ch0: Accelerometer
Fixed speed: 3600 RPM Default
  • Collect a data set every 30 minutes
  • Write data sets whose length is 7 seconds, including 3 seconds of pre-trigger data

Establishing separate data groups also ensures that if a particular event, such as a run-up by the turbine, triggers the device to collect data as part of a stream, the stream contains data from only the turbine instead of from all channels, including those not affected by the run-up.

Related Information

Equipment Mapping Tab (Device Configuration Page)

Configuring a Data Group


 

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