01
Understand
Input definitions
A common structure is OEE = Availability × Performance × Quality, but organizations vary in schedule, exclusions, ideal-rate, rework, and good-count rules. Document the local definition.
| Input | Working definition to approve | Common ambiguity |
|---|---|---|
| Planned production time | Time intended for production under the reporting policy | Breaks, maintenance, no-demand time |
| Run time | Planned production time minus counted stop time | Microstops and threshold rules |
| Ideal cycle time | Approved reference time for one unit in the stated context | Product, cavity, speed, and constraint differences |
| Total count | Units processed under the chosen boundary | Rework, partial units, multi-cavity output |
| Good count | Units meeting the defined quality state | Later rejects, rework, release timing |
03
Apply
Compare like with like
Segment by relevant product, routing, machine or tool configuration, shift definition, scheduled time, and quality rule. Show changes in context next to the number. A rising OEE can reflect a changed product mix or exclusion rule rather than an operational improvement.