Adjust the setup time automatically (SAP Library - Capacity Leveling (PP-CRP-LVL))

Adjust the setup time automatically

Use

You can use the function "automatic adjustment of setup time" on both types of planning table to adjust the setup times of all the operations in a commitment.

The automatic adjustment of the setup time recalculates the new setup time of every operation depending on the operation preceding the operation in question. The operations are rescheduled accordingly.

Note

This function is not available for capacity leveling in the process industry (PP-PI), that is, for capacity leveling of process orders and planned orders that refer to master recipes.

Prerequisites

You must activate the following functions in the strategy profile:

Plan. direction forwards

Insert operation

To calculate the setup time of the operation, the function uses the value stored in the setup matrix for the transition between the predecessor of the operation and the operation itself. This value serves as the standard value for setup. It is here that you specify which standard value of the operation is used as the setup standard value.

If you do not maintain the setup matrix or if a setup transition is not specified in the setup matrix, then the setup standard value in the operation is used. In the control profile, you specify globally for all operations which standard value is to be treated as the setup standard value.

In the setup matrix, a setup transition is identified by setup states that are defined in the preceding and subsequent operations for the work center. Setup states are defined in terms of setup group categories and setup group keys. These must be maintained in the operations.

The function identifies setup transitions that you have identified as forbidden in the setup matrix and highlights them. You can define the colors using the check report.

Activities

Procedure and results of setup time adjustment

To adjust the setup times of all the work centers you have selected choose Functions ® Adjust setup time ® Automatic (capacity planning table) or Functions ® Extended planning ® Adjust setup time (capacity planning table (tabular form)). Even if you select only one capacity, the system adjusts the setup time for the whole work center.

The system recalculates the setup times of operations and reschedules the operations accordingly. If the setup times are reduced in a commitment where there were previously no gaps, then the gaps close automatically as long as you have activated the indicator Close gaps in the strategy profile.

After the setup time adjustment the original setup standard values in the operations are overwritten with the setup standard values from the setup matrix. If you deallocate a dispatched operation after setup time adjustment has taken place then the setup standard value that it had before the automatic standard value adjustment took place is reassigned to it.

Note

If you change a work center commitment for which the setup time has been adjusted (for example, by deallocating an operation) then you have to carry out setup time adjustment again.

Adjustment of setup time of the first operation in the planning period

If the first operation in the commitment in the planning period does not have a predecessor in the evaluation period then the initial setup state of the work center is not defined by an operation.

You can define the initial setup state by entering an Initial setup state in the strategy profile.

The setup time of the first operation is calculated using the standard value saved in the setup time matrix for the transition between the initial setup state and the setup state given for the operation. If you do not specify an initial setup state in the strategy profile then the setup time of the operation is calculated using the setup standard value in the operation.

Forbidden setup transitions

If the function finds forbidden transitions during setup time adjustment then the operations concerned are highlighted.