Accurate Monitoring With Trigger Settings - Omron K7DD User Manual

Accurate Monitoring with Trigger Settings

The K7DD Support Tool allows you to set triggers on the K7DD unit. With trigger settings, you can
choose the timing to measure feature values when the rotation mechanism is operating stably, thus
enabling more accurate monitoring.
 Trigger Settings for More Accurate
Measurement
The K7DD monitors changes in the feature values of power
to capture device deterioration.
For example, when measuring a device with a rotation
mechanism as the monitoring target, its operation start and
end times are not suitable for detecting the deterioration of the
device because the voltage and current*1 significantly change
at these times. To more accurately capture changes in feature
values, it is necessary to capture the sections where the device
is running with a stable current and voltage.
If triggers are set on the K7DD, feature values can be
measured at such appropriate timing. The measured data
will then be the subject of error judgment.
Note that applications that run continuously may not require
a trigger setting. In such cases, set the trigger to continuous
mode.
*1. The current and voltage are used for calculating feature values.
 Trigger Types
There are two types of triggers: the internal trigger and the external trigger. Select the trigger
according to your applications.
Internal trigger: The feature value measured by the
External trigger:ON signals are directly input to the
Power Line Data Generator User's Manual (N233)
K7DD is used as the trigger input.
This can be used for devices that repeat
a certain movement.
It is unnecessary to wire to the trigger
input terminal on the K7DD.
K7DD upon starting of the rotation
mechanism.
In this way, the measurement timing is
ensured.
It is necessary to wire to the trigger input
terminal on the K7DD.
2 Procedures
Delay Measurement Time
Start
Trigger
Measurement Time
Start
Internal trigger
Delay Measurement Time
Start
Trigger
Feature value
2
Monitored feature
Feature for trigger
Trigger level
Feature
value
2 - 3