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APO-MD-PPE: iPPE-Line Design ( RELNAPO_30A_SP1_MD_PPE_3 )

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APO-MD-PPE: iPPE-Line Design


The purpose of this component within Integrated Product and Process Engineering, is to create the structure and the properties of your production lines as master data in the system.

You can reproduce both simple structured production lines as well ashighly complex assembly lines for automobile production. For complex assembly lines you can also carry out a line balance, with which you define the optimal work content of the individual line segments.

iPPE-Line Design is suitable for takt-based, repetitive or flow manufacturing, in which the work stations are linked, both in terms of space and time. The system uses takt-based scheduling as the scheduling type. This is particularly suitable for takt-based production lines.

Line Design uses line resource as the resource type, as this supports the special type of capacity planning on lines as well as takt-based scheduling. You define the production rates or takt times of takt-based scheduling for the line resource. Since takt-based scheduling is the recommended scheduling type for production lines, iPPE-Line Design is not suitable for lead time scheduling with routings.

The components Model mix planning and Planning matrix in the automotive process use the line structure for logistic and planning functions, such as sequence optimization or the determination of the requirements time for the components.

  • You can carry out the planning on the aggregated level of the line. This means the line defines the work-time capacity as well as the production rates and forwards these to the lower-level line segments.
  • You can reproduce the lines in a structure, by dividing them into line segments over as many hierarchy levels as you want. On the lowest level you can divide the line segments further into work packages, in order to reproduce various installation points within the line segment.
  • You can enter the number of takts on the lowest level of the line segments. A takt is a physical area in a line, in which the product remains for processing for the duration of the takt time. Therefore, the number of takts determines the length of the line. If you have not divided a line into line segments, you can also enter the number of takts for the total line.
  • Within a line hierarchy you can put the line segments into a network sequence, using a predecessor-successor relationship. In this network sequence you can also reproduce feeder lines, for example, which are included in takt-based scheduling. For takt-based scheduling the system uses the longest (critical) path through the line, which results from this network sequence.
  • You can also insert buffers into the line structure, in which orders can be stored temporarily. You can also change the order sequence in a buffer.
  • Lines which are linked, but which have different operating times or takt times can be linked to a line network. In this way you can group lines to a unit and plan orders for the total line network.
  • The supply areas in flow manufacturing are places on the line, in which components are staged. You can assign the supply areas to the line segments. This means that the line structure defines the installation points of the components and indirectly also the staging area.
  • In takt-based production the line structure determines the production flow. This means that you can assign the line segments reporting points, at which you can later make confirmations.
  • You can create a line balance for your production lines. In the line balance you assign the activities from the iPPE structure to the line segments, so that the average work contents cover the given takt time as well as possible. As an example for the model-mix, you can enter a list of configured materials and their quota to production.
  • You can create as many line balance versions as you want, to simulate different versions of the line loading and then to make this valid for certain periods.
  • By assigning activities to the line segments of jobs, you also indirectly determine the assignment of the components to the exact installation points on the line. In this way, the planning matrix can determine the exact requirements date for the components.

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Length: 4759 Date: 20191024 Time: 010414     sap01-206 ( 80 ms )

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