At a work order with a resource allocation not 100% (or quantity not 1), the calculation in APS was not correct.
When doing a forward planning in APS, the planned time for the actual day was not correct and the total planned time (if the operation had to
be split to more than one day) differed from the amount of time actually needed for completing the operation.
Now this error is fixed. The total planned time is not higher than the needed time any more and the actual day is calculated correctly.
When resource allocation is not 100%, the time for the operation is calculated as follows:
1. Remaining capacity = capacity for the day - times already used by other WO's
2. maximum X% (e.g. 50% in example) of this capacity will be used for the operation.
Example for calculation when the recaource allocation is less than 100%
- WO with 4 Positions
- Same Item but different deliverydates
- Processingtime is 10 hrs. per position (10 Pc * 60 minutes processing)
- resource allocation is set to 50%
- the capacity of resource "1010" is 24 Hrs.
- resource has 15 hrs. left for the day (9-24)
- 1. WO gets 50% 7,5 hr's
- for the next day only 2,5 Hrs. are needed, so the resource is assigned from 0-5
- now for the 13.03 there are left 7,5 hr's of capacity
- 2. WO gets also 50% of the capacity of the next 15 hrs.
- for the 14.03 there are now 21,5 hrs. left
- WO gets 2,5 hrs. , so it can end at 5:00
- at 13.03 there is no more capacity left (2*7,5 hrs for the 2 prev. positions)
- so WO starts at 14.03
- remaining capacity is 19 hrs. (24 - 2 * 2,5)
- so WO gets 10 hrs between 0:00-20:00
- there is no capacity at 13.03 so start is at 14.03
- the remaining capacity for the 14.03 is now 9 hrs (24 - 2,5 -2,5 - 10)
- the WO gets this 9 hrs. at the 14.03
- now there is one 1 hr. processing time left for the WO
- this has now to be assigned at 15.03.
- As we have 50% utilisation the time is planned from 0:00 - 02:00