Setup time example
The following example illustrates how the Scheduler applies setup time for three different operations producing three different items. Assume these conditions:
- There are three items, each with a single operation.
All three operations require the same resource.
- Adult Bike: Member of setup group Adults. Setup time 2.5 hours.
- Kids Bike, Blue: Member of setup group Kids. Setup time 0.5 hours.
- Kids Bike, Red: Member of setup group Kids. Setup time 1.5 hours.
- The Setup Lookup table "Adults-to-Kids" determines setup time when the setup
group changes as follows.
From To Adults To Kids Unknown 5.0 6.0 Adults 0.2 1.0 Kids 2.0 0.3 Note: The "Unknown" row accounts for the situation where there is no operation scheduled prior to the current one.
The table below shows the Setup Rule and Setup Time rule for each operation and how the setup time is applied based on these rules. Items are listed in the sequence in which they arrive at the resource.
Setup Rule: | Always | Basis | Basis | Always | Basis | Basis |
---|---|---|---|---|---|---|
Setup Basis: | Item | Item | Group | Group | Item | Group |
Setup Time Rule: | Fixed | Fixed | Fixed | Lookup table | Lookup table | Lookup table |
Lookup Table: | N/A | N/A | N/A | Adults-to-Kids | Adults-to-Kids | Adults-to-Kids |
Ø | Ø | Ø | Ø | Ø | Ø | |
Kids Bike, Red | 1.5 | 1.5 | 1.5 | 6.0 | 6.0 | 6.0 |
Kids Bike, Blue | 0.5 | 0.5 | 0 | 0.3 | 0.3 | 0 |
Kids Bike, Blue | 0.5 | 0 |
0 |
0.3 | 0 | 0 |
Adult Bike | 2.5 | 2.5 | 2.5 | 2.0 | 2.0 | 2.0 |
Kids Bike, Blue | 0.5 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 |