Elimination of PM Plan Lines

Explanation

Elimination percentage is used to eliminate maintenance plan lines that are planned to fall due at approximately the same period in time when several PM triggering mechanisms are used, such as a calendar trigger and a condition based trigger. For example, if the PM falls due based on a condition based trigger today, it is not necessary to generate a work order for a calendar that falls due tomorrow. In other words, the percentage denotes at which maintenance yield a maintenance plan line should be eliminated when another PM trigger will fall due first. Elimination percentage can have a value between 50 and 100. Lower elimination percentage means there is more chance of elimination of the maintenance lines with close planned dates. On the other hand higher elimination value means low chance of elimination of maintenance lines. Irrespective of the calculated elimination value of the maintenance line/s, latter maintenance line/s are eliminated if falling on the same planned date.

Prerequisites

At least two different maintenance plans generated from two different conditions or calendar and condition should be there.

System Effects

As a result of this activity maintenance lines having an elimination value higher than the one defined in General tab, Elimination At(%) field  will be eliminated.

Window

Separate PM Action
Route PM Action

Related Window Descriptions

Separate PM Action 
Separate PM Action/Condition
Route PM Action
Route PM Action/Condition

Procedure

  1. Open either the Separate PM Action window or the Route PM Action window.
  2. Create a new record (F5) or query for an existing one (F3).
  3. Click the General tab. Follow the appropriate steps:

For Calendar based generation:

  1. In the Start Value field, enter the time from which you want the PM action (once generated) to be effective.
  2. In the Start Unit field, select the unit of measure for the value entered in the Start Value field. 
  3. In the Interval field, enter the time interval, as to how often the work orders have to be generated.
  4. In the Interval Unit field, select the unit of measure for the time interval.
  5. In the Valid From and Valid To fields, enter the time range for which the  PM action will be valid. These fields can be used to limit the effectiveness of the PM action.
  6. In the Calendar field, enter a suitable work time calendar. Use the List of Values to select a suitable value. The PM plan lines of the PM action will be generated in accordance with the connected calendar.

For Condition based generation:

  1. Zoom the connected object and create a test point and accumulated type parameter there.
  2. In the Condition tab, register a condition using the test point and parameter created in the above step with suitable start value and interval.
  3. Select the condition registered in the step 2 and click right mouse button and select measurements.
  4. In the Measurements window, register at least two measurements
  5. Go to the relevant background job execute it manually or wait till the background job is completed.

Elimination of PM lines:

  1. Activate the PM Action.
  2. In the Elimination At(%) field, enter a value in between 50 and 100.
  3. Save the information (F12).
  4. Observe the elimination of Maintenance lines with close planned dates.