Control Chart Query

[Former Member]

Dear Experts

As part of SAP QM Implementation we are implementing control chart functionality to get graphical representation against measured values for pre-defined parameters. I am facing two issues mainly:

1. When I try to calculate control limits (clicking calculator button) getting message "Control limits for track 1 could not be calculated". MICs has the upper limit and lower limit maintained which I can see in QAMV table for the inspection lots.

2. In the attached control chart , I am getting Upper Limit, Lower Limit and the Valuated Result in graphical form, when I try to display the inspection date, for the characteristics against inspection lot, I get lost. System is showing some date 7/14/14 against all the characteristics which I am not sure how to achieve.

Settings I made:

Sampling type: Fixed sample

Valuation mode: SPC inspection

W/O inspection point

Sample size: 5

Chart type:115 Shewhart chart for X bar/USA

MIC Settings:

Quantitative / Lower / Upper Sp. Limit / Sampling Procedure / SPC Characteristics / Summerised Recording / Required Char.

Inspection plan setting is:

SPC criterion : 020 task list char/material

Base qty : 1KG

Control Chart Configurations:

1. Control Chart Type -115

a) Change Control Limit not checked

b) Characteristics Type- Fixed Scope, Record measured values

c) Reference Axis (x-axis) - Time of Creation ( Do I need to change here to "Object Number" or "Time Of Inspection" ?)

Any input will be highly appreciated.

Regards

SK

[Former Member]

Hello,

For Control limits your chart needs to closed. and offcourse for calculation u need to have more than one inspection lot. then system will calculate the same. UD is also required against lots.

Regards

[Former Member]

Thanks Shailendra.

[Former Member]

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