Exactly 200 workpieces fit into an annealing furnace. However 201 workpieces have to be annealed. In this case two runs are necessary, the annealing time is doubled.
The execution time is the sum of the setup time and the annealing time multiplied by the number of runs. This is expressed in the following formula
F = SET + ( VOL_B / B * ( LOT- 1) DIV VOL_F + 1) * RUN
The meaning of the formula parameters and the origins of their values are given in the table below.
Formula Parameter |
Meaning |
Origin |
B |
Base quantity |
General operation value |
LOT |
Lot size |
General operation value |
RUN |
Annealing time |
Standard value |
SET |
Setup time before processing |
Standard value |
VOL_B |
Volume of the base quantity |
Standard value |
VOL_F |
Volume of the annealing furnace |
Standard value or Formula constant |
You can assign just one operation segment, for example the processing segment, a formula to calculate the execution time of the whole operation. You do not assign formula to the other segments
Calculations with Several Formulas
Since the program adds together the times of two segments, you can use two formulas, F1 and F4 for the segments.
Operation segment: Set-up |
F1 = TR |
Operation segment: Process |
F4 = ( VOL_B / B * ( LOS - 1) DIV VOL_GO + 1) * TE |
This is useful, if you are interested in the times of the individual segments.
Note
The formulas and parameters used here, F, F1, F4, B, LOT, SET, etc., are only valid in this example. In the SAP standard system formulas and parameters are defined for various applications with different formula key words and parameter IDs.