Omron K6CM Usage Manual page 40

3 Features Analysis
K7DD Features Selection
The optimal features for monitoring are automatically displayed based on the normal and abnormal
data registered on the Data Registration Screen.
Select the checkboxes for the features with a largest change rate displayed in the Score.
This is the Features Selection Screen.
1
Select the checkboxes for the fea-
tures to be used for alarm settings.
2
Once you select one or more fea-
tures, the Next Button will be
enabled. Click the Button to go to
the next screen.
The change rate displayed in the Score represents the proportion of the change
compared to normal data (the difference between normal and abnormal data). For
example, if the change rate is 0.10, it indicates a 10% change.
Change rate displayed as infinity symbol (∞) in the Score
Even if the change rate is indicated by the infinity symbol in the Score, you can select it
as a feature for monitoring without any problem. The change rate is calculated by
dividing the value after the change (abnormal) by the difference between the value after
the change (abnormal) and the value before the change (normal). If the value before the
change (normal) is extremely small, it may result in the display of the infinity symbol (∞),
indicating a significant distinction between normal and abnormal data.
The number of features selected
The change rate is automatically calculated by comparing the feature values in normal
and abnormal conditions. Unless otherwise specified, select the feature with the largest
change rate displayed on the Screen.
If the feature with the largest change rate is nth order harmonic current, select the
corresponding Current total harmonic distortion for R, S, and T phases. This ensures a
certain capture of the change.
Histogram
The Histogram is a statistical graph that displays the magnitude of features for normal or
abnormal data on the vertical axis and the occurrence frequency on the horizontal axis.
This is used to visually understand the distribution and trends of your data.
In the Tool, overlapping areas are highlighted with a more vivid white color for emphasis.
This allows for a quick visual confirmation of central tendency, dispersion, skewness, and
other characteristics.
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Features Analysis - Features Selection
Condition Monitoring Configuration Tool Usage Guide (N240)