Simplified Threshold Settings (Teaching) - Omron K7DD User Manual

2 Procedures

(5) Simplified Threshold Settings (Teaching)

Perform teaching with the simplified threshold setting function to configure the
feature threshold settings.
 What is Simplified Threshold Setting?
This function selects feature values, and automatically
calculates and sets critical/warning thresholds based on the
normal data and abnormal data to be monitored. Obtaining
normal and abnormal data here refers to teaching.
Condition monitoring of the device becomes available after
the teaching is completed. For devices that cannot simulate
an error, you need to continue teaching until the relevant
error actually occurs. Since a long period of time is required
for such errors to occur, do not forget to complete the
teaching before starting maintenance.
Refer to 4-3 Simplified Threshold Settings (P.4-4)
for details on the simplified threshold settings.
Configuration with Key Operations
1.
Start the 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.
2.
Start teaching. Press the [INTL key (Normal Data Acquisition key)]
for 3 seconds while the Monitoring Level is being displayed.
•
Data during normal operation is acquired as normal data. If
successful, the [INTL] lights up. If it does not light, data
acquisition has failed.
3.
After [INTL] lights up, acquisition of abnormal data starts continuously.
•
Simulate the error on the device to be monitored.
•
If the error cannot be simulated, operate the device in normal
operation until the error occurs.
4.
Press the [SET key (Abnormal Data Acquisition key)] for
3 seconds after the abnormal data has been acquired. The
teaching is then completed.
•
If the abnormal data is acquired correctly, [INTL] turns off and
[SCCS] lights up. From among several types of features, the
K7DD selects the one with significant change as the monitored
feature based on the obtained normal and abnormal data, and
sets its maximum value as the threshold.
• Upon completion of teaching, the critical and warning thresholds are calculated to the same value.
If the device is still operational when the alarm is issued in actual operation, increase the critical
threshold accordingly. On the other hand, if you want to issue an alarm at an earlier timing,
decrease the warning threshold. In either case, it is advisable to make adjustments so that the
alarm can be notified at two different timings.
2 - 12
K7DD
Application
Normal operation
Normal data
Teaching
Abnormal operation
Abnormal data
Feature A
Feature B
Feature...
Feature...
Power Line Data Generator User's Manual (N233)
Feature values are
calculated from normal
and abnormal data,
and thresholds are
automatically set when
significant differences
are observed.
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