How OEE data is calculated

Note: The results of all OEE calculations are displayed as percentages.

OEE

The efficiency calculation is based on the industry standard OEE (Overall Equipment Effectiveness) efficiency methodology.

OEE is determined as follows:

OEE = Availability x Quality x Performance

Availability

The Availability for a piece of equipment is calculated by summarizing the duration of its Runtime and Downtime utilization events in the selected time period. For a production line, the event data is an aggregate of the production line's bottleneck equipment. Idle utilization events are not included in the calculation.

The calculation is:

Availability = Runtime / (Runtime + Downtime)

Performance

The performance efficiency component of OEE measures a piece of equipment or a production line's ability to produce at the target production rate. For production lines, the good counts are from the production sources, the waste counts are from the production sources and bottlenecks, and the ideal production is based on the line's bottlenecks.

Performance = (Good Production Quantity + Waste Production Quantity) / Ideal Production Quantity

Quality

The quality efficiency component of OEE measures a piece of equipment or a production line's output quality while producing units during the selected time period. For production lines, the counts are based on the line's production sources (good and waste) and bottlenecks (waste).

Quality = Good Production / (Good Production + Waste Production)