Example of scheduling based on finite capacity

A production file with two operations must be scheduled. These operations take place consecutively.

The capacity and load of the capacity group for operation A will look like this:

The capacity and load of the capacity group for operation B will look like this:

Assumptions

• Forward scheduling
• Based on finite capacity
• Start date is October 21
• Automatic planning using Perform lead time planning

Results

When planning based on finite capacity, the plan time for the operations is matched against the capacity of the capacity group. Other production orders that have already been scheduled are taken into account. Production file X will therefore be scheduled as follows:

• For operation A, the plan time is 24 hours, and the capacity is 8 hours per day. If the start date is October 21, 8 hours are available for work on the first day; 4 hours on the second day (because 4 hours have already been scheduled for another operation), 7 hours on the third day (because 1 hour has already been scheduled), and 5 hours on the fourth day. This means the end date will be October 24.
• For operation B, the plan time is 40 hours and the capacity 16 hours per day, except during weekends, when it is '0'. Hours already scheduled are also taken into account. Operation A ends on October 24, so operation B will start on October 25. On the first day, 10 hours will be scheduled (16 hours minus the hours already scheduled for other operations), on the second and third day no hours will be scheduled (the capacity is '0'), on the fourth day 16 hours will be scheduled, and on the fifth day the last 14 hours will be scheduled. The end date is October 29.

The load of the capacity groups will be as follows:

• Capacity group A:

• Capacity group B: