Analysis: EFFECTIVENESS
Analysis: EFFECTIVENESS
Provides loss diagrams, averaged over a period of time, showing the resulting Solitair, OEE, OOE and TEEP.
The EFFECTIVENESS chart is a static analysis. It aggregates a series of shiftdata into
- Loss-cascade-Bar
- Pie chart
Effectiveness as LOSS CASCADE BAR
The OEE Loss Cascade Barchart displays the average values of the OEE, availability rate, performance rate and quality rate over the specified time period.
Note: The chart is similar to the OEE bar chart in the OEE calculation screen (but in this case, based on more than one shift). In addition, the selected color scheme is always identical in order to facilitate recognition.
| Element | Function |
| (1) Overall chart | Shows clearly the biggest loss. (see next table) |
| (2) Data-Filter | What data will be shown? |
| (3) KPI | A radiobutton allows to switch between the display of Solitair ((A-LineRestraints) x P x Q) OEE (A x P x Q) OOE (Scheduled x A x P x Q) TEEP (Utilized x Scheduled x A x P x Q). |
| (4) | Pie or Loss Cascade Bar? |
| (5) | Show Subcategories: When sub-categories are defined for activities, those wil be shown separately Validate Data: Check for inconsistencies in base-data |
| (6) | Unvalidated: Data have not been validated before processing Validated: Data have been validated en found to be correct Based on incorrect data in data-entry screen: Graph has been generated yet is not fully reliable. Data errors have to be corrected first. |
In the chart you see:
| Element | Function |
| (1) Overall chart | Shows loss-cascade from all shifttime until actual good output. |
| (1) Availability | Displays the time the machine had output versus the time it had no-output. |
| (1) Failure | Lost time due to (F)ailures: Machine suffers breakdowns |
| (1) Idle | Lost time due to organisational (W)aiting Time |
| (1) Line Restraint | Lost time due to (L)ine Restraints: Logistic problems in Line: No input or no output possible (buffer full) |
| (1) Performance | Displays the actual speed versus the theoretical maximum speed |
| (1) Reduced Speed | Displays losses due to reduced production speed. These occur when the actual set speed of the machine is lower than the Theoretical Maximum speed for the produced product. |
| (1) Minor Stops | Displays losses due to minor stoppages. This is the difference between the expected output at the set speed versus the theoretical maximum speed |
| (1) Quality | The actually produced GOOD product versus the total produced output |
| (1) Scrap | Displays losses due to scrap (S). |
| (1) Sub-spec (not shown in this bar) | Displays losses due to sub-spec (SS). |
| (1) Rework (not shown in Pie) | Displays losses due to rework (R). |
TEEP Loss Cascade Bar
Selecting TEEP as KPI shows two extra bars:
- TEEP time: 24/7
OOE time: Shift-time including [U]nscheduled time
| Bar | Shows |
| Total Shift-Time Versus 24/7 time | Shows the total time within the selected time-range as 100%. This is the total time within a date range. Within this time we see the total shift-time and the total not-scheduled time.. |
| Scheduled and un-scheduled | Total scheduled shift-time (as registered in the total shift-duration for each OEE calculation) plus un-scheduled time (registered as [U]) Scheduled time includes [P], [W], [F],[L] |
Effectiveness as PIE chart
| Element | Function |
| (1) Overall chart | Shows clearly the biggest loss. (see next table) |
| (2) Data-Filter | What data will be shown? |
| (3) KPI | A radiobutton allows to switch between the display of Solitair ((A-LineRestraints) x P x Q) OEE (A x P x Q) OOE (Scheduled x A x P x Q) TEEP (Utilized x Scheduled x A x P x Q). |
| (4) | Pie or Loss Cascade Bar? |
| (5) | When Pie selected: How show pie-elements be sorted? |
| (6) | Show Sub-categories: When Activity-Groups have been defined they can be shown here Validated Data: Should we validate data before processing? |
| (7) | Unvalidated: Data have not been validated before processing Validated: Data have been validated en found to be correct Based on incorrect data in data-entry screen: Graph has been generated yet is not be fully reliaible. Data errors have to be corrected first. |
In the chart you see:
| Element | Function |
| (1) Overall chart | Shows clearly the biggest loss. |
| (1) OEE | Displays the OEE value for the selected time period. |
| (1) Failure | Displays losses due to failures (F). |
| (1) Waiting | Displays losses due to Idle time (W). |
| (1) Speed | Displays losses due to reduced production speed. These occur when the actual set speed of the machine is lower than the Standard speed for that specific product. |
| (1) Minor Stops | Displays losses due to minor stoppages. |
| (1) Scrap | Displays losses due to scrap (S). |
| (1) Sub-spec (not shown in Pie) | Displays losses due to sub-spec (SS). |
| (1) Rework (not shown in Pie) | Displays losses due to rework (R). |
The ‘Six Big losses’
The traditional ‘Six Big losses’ defined log ago, have proven not to be completely useful for an effective improvement plan. In the latest versions of the OEE Industry Standard the OEE losses are defined as:
- Waiting (Organisational issues)
- Failures (Technical Breakdowns)
- [used to be waiting:] Line Restraints (Logistical unbalanced situations)
- Reduced Speed (deliberately lowered set speed)
- Minor stops (Speed deviations and small disturbances)
- Scrap (product can not be used in any way)
- Rework (does not meet spec but can be repaired)
- [Used to be Scrap] Sub Spec (does not meet spec but can be sold)
Values in effectiveness chart: Time and Percentage
The labels in the effectiveness pie- and bar chart show percentage and time. And OEE of 10% could be 48min. This means the machine was 10% of the total displayed time (e.g. 480min) effective. In time that would be 48 min. Where is the rest of the time gone: that is displayed in the chart or bar as losses.