Mixed Model Tutorial

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Tutorial Objective:

This tutorial will show you how to create a mixed model line balance. Please use the sample scenario file Mixed Pumps.xml (located in the Help Directory of your CD, or available on the Proplanner website) for this tutorial. All steps defined in the tutorial for a Single Model balance, except for ‘Step:4 Single Model Balance’ and ‘Step 8: Reports’ are the same. Steps 4 and 8 will be the only two steps described in this tutorial section. 

 

 

Step 4:  Mixed model balance

 

 

I.Go to File => Properties and check that Mixed Model Balance has been selected. If not, select it.  Of course, you need to ensure that you have opened the scenario file “Mixed Pumps.xml”.

 

II.Go to the Model Editor (View=> Model Editor).  With the ‘Model Sheet’ tab invoked, you will see Large Pump, Medium Pump and Small Pump. Change the demand values to 0.2, 0.4, and 0.4 respectively. These values set the demand for the Large Pump at 20% and the demand for the Medium & Small pumps at 40% each.
       Note: For proper calculation, the demand % values should add up to 1.

 

III.Next, go to the ‘Balancing Station View’ (View => Balancing Station View). Select Auto Balance (Balance=> Auto Balance). Enter cycle time = 47 and select ‘OK’.

 

 

 

Figure 15:  Auto balance menu
Figure 15:  Auto balance menu

 

 

 

IV.Select ‘Yes’ to the following message warning about clearing existing assignments.

 

 

 

Figure 16:  Clear existing assignments
Figure 16:  Clear existing assignments

 

 

 

V.The following balance shown in Figure 17 will be generated.

 

 

Figure 17:  Generated line balance
Figure 17:  Generated line balance

 

 

VI.The chart (above) documents a mixed model balance showing the time spent by each model in each station and the average time considering the model demand % and penetration %. Please note that for individual models, the graph shows the actual time spent by each model in every station.  Since the average time bar considers the model demand % and penetration %, there is a possibility that the average time is not a straightforward mathematical average of the model times.

 

 

Step 8:  Reports

 

 

I.Reports can be generated from the regular Reports menu. These reports consider multiple models.

 

 

 

Figure 18:  Balance report
Figure 18:  Balance report

 

 

 

Figure 19:  Balance summary report
Figure 19:  Balance summary report