OEE Coach Software Help
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The PERFORMANCE SUMMARY

After entering one or more activities that produce(s) output, in the Summary part of the main screen, all entered output during this calculation is being added in a summary.

This summary contains the relevant data to calculate the ‘performance’ of the machine during this calculation.

Summary data

Per calculation, the following information is displayed in the summary screen:

FieldFunction
Max OutputTotal production time x max speed
Speed LossOutput at Max speed – Expected output at Set speed
ExpectedTotal Production Time * Set Speed
Minor StopsExpected output – Actual output
OutputActual output
Performance(Actual output/Theoretical output) * 100% (weighted Average with multiple runs/products)

Warning-signals

The machine cannot run faster than the speed it is set to. The set speed cannot be higher than the maximum speed of the machine. If there was more output than possible at set or max speed, the system will display warnings.

Output higher than possible at Max Speed

Situation 1:

  • The machine ran at 50% of its maximum speed (10 pc/min).
  • Expected output would be 480m * (0,5*10)=2400
  • Actual output was 2410: that is 10 more than possible.

You will see that the (actual) output is marked in red, indicating this cannot be true.

Minor stops are now -10: the difference between expected- and actual output.

The error will also be mention in the ‘Validation Errors’ tab:

Pressing the white-in-blue arrow on the right will take you to spot where you can correct the error.

Speed Loss – Minor Stops

The Performance rate is expressed as actual output divided by the target production ( = expected output at standard maximum speed or NPC (Name Plate Capacity)). To enable more detailed analysis of Performance losses, this loss is separated in ‘Speed Loss’ and ‘Minor Stops’.

Speed Loss:

The difference between the standard maximum speed and the actual set speed of the machine results in speed loss. The loss due to reduced speed is expressed as the difference between the ‘Theoretical Output’ and the expected production at the actual set speed called ‘Target at Speed’.

Minor Stops:

The difference between the ‘Actual Output’ and the ‘Target at Speed’ are the losses due to ‘Minor Stops’. Minor stops are stops with a duration shorter than the OEE registration intervals (1 minute). These stops are therefore not registered.

Examples of minor stops are:

  • jammed bottles or trays which are corrected by the operator e.g. by    pushing the tray or bottle in the correct position without stopping the machine;
  • changing pallets or racks at the end of the line;
  • short but frequent failures of a packaging machine.

Output higher than possible at Set Speed

Situation 2:

  • The machine ran at 50% of its maximum speed (10 pc/min).
  • Expected output would be 480 * (0,5*10)=2400
  • Actual output was 5000: that is 2600 more than possible at set speed and 200 more than possible at max speed.

You see that the actual output is marked in red, indicating this cannot be true

Minor stops are now -2600: the difference between expected- and actual output.

Validation of Output-quantity

If there is more output than theoretical possible (production time x standard) a red warning signal is given. However, in a shift with multiple production-runs it is possible one run has more output than possible and the other has less. Together they stay within the range. To detect such situations, an extra check has been build; per production run the following tests are performed:

  1. Is there output of good product exceeding the theoretical output of that product?
  2. Is the total output of one run exceeding the theoretical output of this run?

In a parallel output one run produces multiple different products. There is no difference in single vs parallel output. Each good product, together with its non-good products must be less <= its Expected Output

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