Variable consumption of a resource

[Former Member]

Hi,

In PPM when we define modes, there is a field called Variable Duration.

I want to know how this field is calculated if the data is transfered from R/3.

What is the exact definition of this field.

Eg. In master recipe, the machine time is 33 Min, Labor time is 7 Min.

In PPM , the variable duration is 0.117 Hrs. (How??????)

Base Qty : 1000 Kgs

Thanks

[Former Member · Accepted solution]

Dear asheesh,

In R/3 work center, there is a processing fomula on scheduling tab page.

For example, Procrssing Fomula(Processing Time) = Production time * Operation quantity / Base quantity / Operation splits with base quantity. And also, in routing, there are activities for each opearion and one of them is used as production time.

In your case, variable duration 0.117 means that you defined the processing fimula with labor time. So if base quantity, operation quantity, operation split are 1000, 1000, 1 repectively then processing time based on processing fomula is 7 min.(7 * 1000 / 1000/ 1)

In APO, the processing time is used as variable duration which is lot size dependent and converted to hr.

Hope tobe helpful.

Best regards,

Lee, Seung Won

[Former Member · Accepted solution]

Thanks Lee,

You solved my problem/confusion.

[digambar_narkhede]

Hi Asheesh ,

There are various Heuristics defined in the operations management for Calculating the operation time and durations depending on the Heuristics selected (which are based on the Formulaes ) it give the time duration .

These calculations are much compicated and difficult to understand

Regds,digs