40 Rockwell Automation Publication 750-RM100A-EN-P - August 2019
Chapter 6 Predictive Maintenance
Setting the Event Levels
and Event Actions
There is an event level and event action for each type of predictive maintenance
function. The event level and event action parameters are in port 0, because it is
logical for all events of the same type to occur at the same level. For example, it is
logical for all heatsink fan events to happen at the same level. Heatsink fans are in
the line side converter and the motor side inverter.
Event Level
The event level determines when the event occurs. The level is expressed in
percent of life used.
The event occurs when the component has used up this amount of predicted life.
The default is 80%. If you leave it at the default setting, the event occurs when
80% of the component life is used. If you change a level to 50%, the event occurs
when half of the component life is used.
You can change these values to almost any level. Select a level that is appropriate
for your application and drive section. If the drive section is critical or the
application cannot tolerate unplanned downtime, you can use lower event level
values.
Event Action
The event action determines what happens when the event occurs. There are two
choices: Ignore and Alarm. If you select alarm, the event triggers an alarm. Alarms
are notifications and do not interrupt product operation. The alarm number and
alarm text appear on the HIM and in any connected software. They are also
recorded in the alarm queue.
You could choose Ignore if you wanted to use another means to track remaining
life and create a notification. One possible option is to use your own logic in a
controller to monitor elapsed life and remaining life parameters, and then create a
notification on a Human Machine Interface screen.
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