Deviation
A deviation represents a discrepancy between an actual value (measured or calculated) and its expected value within manufacturing operations. While significant, deviations are often symptoms rather than root causes, necessitating further analysis and manual intervention for resolution. For instance, if a sensor on a welding unit detects overheating, it indicates a deviation from the intended temperature. However, identifying the root cause—such as a faulty thermocouple or software error—requires deeper analysis by a maintenance technician.
Deviations are associated with an affected entity, identified by the affectedId property, whose performance may be impacted by the deviation. These entities are not
limited to physical production facilities. The following types of affected entities are supported by the Deviation Processor as of the time of writing:
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Facilities
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Devices
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Processes
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Shifts
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Products
Deviation Risks
Deviation Risks signify that a deviation may affect the performance of a specific KPI if not resolved within a designated timeframe. Currently, if the specified grace period expires, the risk is simply closed without any consequences. Future revisions will enhance this feature to provide more robust handling of unresolved risks.
Deviation Impacts
Deviation Impacts indicate which KPIs are affected by a deviation and the degree of that impact. For instance, machine downtime often leads to reduced production line output, resulting in fewer products being produced and affecting delivery schedules. Detectors can specify the impact of a particular deviation when it is clear which KPIs are influenced by that deviation.
Deviation Hints
Additional information, hints, or comments can be added here to provide more context to the deviation. For example, a hint could be that the deviation is a known issue and a workaround is available. These hints can either be provided as part of the deviation notification or added manually by the user.