Creating Manufacturing Limits

Using this procedure, you will create the manufacturing limits.

Enact automatically updates manufacturing limits every 10 minutes, which means there will be a slight delay before you see recent changes.

  1. Select Access Menu and then select Analysis | Manufacturing Limits.
  2. In the Manufacturing Limits landing page, select Create Manufacturing Limit.

  3. In the Part drop-down list, select the desired part. HintClosedTo locate the desired part, begin typing a string within the part. For example, to locate Part Name, you can type par or you can type nam.
  4. In the Units drop-down list, select the desired measurement unit.
  5. In the Feature drop-down list, select the desired feature. HintClosedTo locate the desired feature, begin typing a string within the feature. For example, to locate Feature Name, you can type fea or you can type nam.

    If you select a part-feature combination that matches a removed manufacturing limit, Enact displays the message, "Manufacturing Limit already exists as removed record for [Part] - [Feature] combination. Manufacturing Limit needs to be restored first before using it." Do one of the following:

  6. In the Process drop-down list, select the desired process. HintClosedTo locate the desired process, begin typing a string within the process. For example, to locate Process Name, you can type pro or you can type nam.

    If you cannot see the Process data field, expand Define Constraints.

    Enact applies the configured manufacturing limits to the selected process and also all processes and subprocesses below it in the hierarchy. For example, if you create a Net Weight manufacturing limit and select the Fairfax (site) process, Enact cascades the manufacturing limit to all processes and subprocesses within the Fairfax site.

  7. Modify the contents under the following tabs:

  8. Select Save.

Piece Limits Tab

Under the Piece Limits tab, you can assign and configure the specification limits (standard or alternate), warning limits, and reasonable limits for a part and feature combination.

Special Limits Tab

Under the Special Limits tab, you can configure within piece limits, which are used exclusively for sub-tests, and subgroup limits, which are used to test the plot point against a specification limit.

MAV Method Tab

Under the MAV Method tab, you can configure the Maximum Allowable Variation Method, which is the tolerance below or above the stated content within which the US government permits a limited number of packs to be included in the lot. By default, Enact uses the same units for the MAV method as it does for the specification limits.

Enact only triggers events on individual MAV violations. Enact will never trigger events on Max % violations.

  1. To manually set the Units data field, deselect Same as Manufacturing Limit Units and in the Units drop-down list, select the desired unit.

    By default, the MAV method uses the same units as the specification limits.

  2. In the Label Stated Content (LSC) data field, type the label content or weight defined on the package. This is the quantity of product the consumer is buying. For weight control, the stated content is often referred to as Label Weight, Declared Weight, Nominal Weight, or Target Weight.
  3. To set MAV Upper, expand MAV Upper, and then do the following:

    1. In the MAV Upper data field, type the tolerance above the Stated Content within which the US government permits a limited number of packs to be included in the lot.
    2. In the Max % > MAV Upper data field, type the maximum allowable percentage above the MAV Upper.
  4. To enable events on a MAV upper limit violation, activate the Events slider.

    To disable events on a MAV upper limit violation, deactivate the Events slider.

  5. To set MAV Lower, expand MAV Lower, and then do the following:

    1. In the MAV Lower data field, type the tolerance below the Stated Content within which the US government permits a limited number of packs to be included in the lot.
    2. In the Max % < MAV Lower data field, type the maximum allowable percentage below the MAV Lower.
  6. To enable events on a MAV lower limit violation, activate the Events slider.

    To disable events on a MAV lower limit violation, deactivate the Events slider.

T1T2 Method Tab

Under the T1T2 Method tab, you can configure the T1T2 Method, where both T1 and T2 set points are dividing lines between two weight zones. T1 Upper requires weight above the stated content allowed by the European Union and the average of the batch must exceed the Stated Content. T2 Upper data field requires weight above the stated content allowed by the European Union which must be above T1 and does not exceed 2.5% of the batch.

Enact only triggers events on individual T2 violations. Enact will never trigger events on T1 violations or Max % violations.

  1. To manually set the Units data field, deselect Same as Manufacturing Limit Units and in the Units drop-down list, select the desired unit.

    By default, the T1T2 method uses the same units as the specification limits.

  2. In the Label Stated Content (LSC) data field, type the label content or weight defined on the package. This is the quantity of product the consumer is buying. For weight control, the stated content is often referred to as Label Weight, Declared Weight, Nominal Weight, or Target Weight.
  3. To set T1T2 Upper, expand T1T2 Upper, and then do the following:

    1. In the T2 Upper data field, type the weight above the Stated Content allowable by the European Union, which must be above T1 and cannot exceed 2.5% typical of the batch.
    2. In the T1 Upper data field, type the weight above the Stated Content allowable by the European Union, which can be of unlimited quantity, though the average of the batch must exceed the Stated Content.
    3. In the Max % between T1T2 Upper data field, type the maximum allowable percentage between T1T2 Upper.
    4. In the Max % > T2 Upper data field, type the maximum allowable percentage above T2 Upper.
  4. To enable events on a T2 upper limit violation, activate the Events slider.

    To disable events on a T2 upper limit violation, deactivate the Events slider.

  5. To set T1T2 Lower, expand T1T2 Lower, and then do the following:

    1. In the T2 Lower data field, type the weight below the Stated Content allowable by the European Union.
    2. In the T1 Lower data field, type the weight below the Stated Content allowable by the European Union, which cannot exceed 2.5% (typical) of the batch.
    3. In the Max % between T1T2 Lower data field, type the maximum allowable percentage between T1T2 Lower.
    4. In the Max % < T2 Lower data field, type the maximum allowable percentage below T2 Lower.
  6. To enable events on a T2 lower limit violation, activate the Events slider.

    To disable events on a T2 lower limit violation, deactivate the Events slider.