Setup optimization - Changeover time queries

[Former Member]

We are planning to use Setup Matrix based optimization in PPDS to schedule planned orders. Setup group and keys are maintained in routings and available in PDS. The setup matrix is maintained and updated in resources. In the optimizer run, system will read the changeover time (transition time) from the setup matrix. I have queries on this process:

Q1 - Will the change over time also be taken into account while calculating the actual planned order start time and end time? Or will the setup activity time will just be taken from PDS (which in turn comes from ECC routing?)

Q2 u2013 If the answer to above is a no, does it mean that for production execution, APO will provide only the correct order sequence and approximate order start and finish timings? (This would be somewhat a letdown if we can't get a feasible schedule with order start and end timings; something the production folks could aspire to.)

Q3 u2013 We also plan to allow out some manual adjustments in DS Planning Board. When we move the orders around by drag and drop, will the DS Board read the changeover time from the setup matrix?

[Former Member · Accepted solution]

1. If you have checked sequence dependent set up activity in PDS during planned order creation also time will be taken from matrix not from routing.

2. Change in order sequence in DS board manually will result into different set up times based on matrix defined.

Santosh

[Former Member]

Great.

I also set up master data to verify and it works fine. The set up time is read from the setup matrix irrespective of whether orders are created manually or moved around in DS Board.

Thanks.

Edited by: TemYogi on Oct 8, 2010 4:14 AM

[Former Member]

Yes. First rder doesnot have any set up time as initial set up status is blank. You can try maintaining setup time in matrix with blank predecessor and set up group for sucessor in this case this set up time will be picked for first order.

santosh