Omron K7DD User Manual page 75

• The normal data to be registered changes depending on the feature calculation cycle and the timing of teaching start.
Case 1: When the 3 second period after key pressing falls within a feature calculation cycle
calculation cycle (1)
Case 2: The 3 second period after key pressing falls across two feature calculation cycles.
calculation cycle (1)
 Description
(1) Normal operation of the application
Before starting teaching, normal operation of the application for
a period longer than the feature value calculation cycle is
required. Inside K7DD, the average value data for the feature
calculation cycle is always calculated. Therefore, if there is a
power failure during this period, start teaching after the time for
the feature calculation cycle has elapsed.
(2) Teaching start
Pressing the [INTL] key for 3 seconds after the end of normal
operation starts teaching for the simplified threshold setting. The
[INTL] lights up as a sign of starting. At this time, the average
value calculated in the feature calculation cycle is registered as
normal data. *1 At the same time, the update of the maximum
value for each feature starts. The information is stored inside the
K7DD.
*1. If a measurement error has occurred, [INTL] does not light and normal data registration has failed. In
such cases, start teaching again.
(3) Teaching period
Continue normal operation during the teaching period until an
application error occurs. During this time, the K7DD has been
updating the maximum value for each feature.
(4) Teaching end
Press the [SET] key for 3 seconds after the error occurs. The
maximum value of each feature that has been updated is fixed,
the features required for monitoring are automatically selected,
and critical/warning thresholds are automatically set. However, if
the difference between normal and abnormal data is small*1,
automatic selection and setting will not work.
*1. The maximum value is smaller than 1.1 times the normal data.
Power Line Data Generator User's Manual (N233)
Data of feature Data of feature
calculation cycle (2)
Start of pressing [INTL] key
Data of feature Data of feature
calculation cycle (2)
Start of pressing [INTL] key
Data of feature Data of feature
calculation cycle (3) calculation cycle (4)
Average of feature calculation
3 sec
cycle (2) is registered as
normal data.
Data of feature Data of feature
calculation cycle (3) calculation cycle (4)
Average of feature calculation
3 sec
cycle (3) is registered as
normal value.
4 K7DD Function
14!4
rms
8
14!4
rms
8
14"5
rms
8
14"5
rms
8
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