Fast and accurate evaluation of key indicators

Online production data acquisition and monitoring

At today's level of automation it is natural that managers exchange a large amount of data with individual production facilities. An excessive amount of these data must be properly evaluated. What is important is the ability to present information in a comprehensible form necessary for decision making. Just EMANS help managers in decision-making.

Online data collection from production - EMANS

OEE indicator (Overall Equipment Efficiency)

OEE indicator, which is implemented in the EMANS system, reliably describes the production conditions. It compares these conditions with history data (verifies improvement or deterioration of conditions). The OEE is a result of three other key indicators, each of which represents a different aspect of the machine or operator's performance.

Availability – AV, stated in percentages

The availability shows for how long, with respect to the defined total amount of time (scheduled time), the machine (workplace) is actually ready for production. The ratio of losses (i.e. workplace is not ready for production) includes all stops. For the machine it may be due to a breakdown of the machine or the time needed for adjustment of the machine. 

Performance rate – PR, stated in percentages

The Performance rate is defined as the ratio between the quantity of units of products actually produced per unit time (e.g. units per hour) and theoretically possible amount of units per unit of time.  Thus it includes the number of units produced during production time, including downtime (exceeding its planned cycles, etc.).

Quality rate – QR, stated in percentages

Quality rate is defined as the ratio between usable quantities produced (number of good pieces) and the total quantity produced. This reflects the production units which cause losses due to defects or the need for product repairs.

These mentioned sub-indicators are multiplied, thus producing the overall OEE indicator:

OEE = AV X PR X QR

It is important that this indicator is recorded for precisely defined and invariable time (e.g. work shifts, days and weeks), so it allows make comparisons at different times, thus helping to implement the objective of managers in manufacturing: Continuous improvement.

A reliable monitoring of production conditions (improvements) may be carried out using KPI indicators. Such evaluation may reveal weak points in the production process and even predict future problems. The evaluation of the production conditions will allow you to better plan and implement changes in production, which will lead to higher performance at decreasing costs.