Efficiency monitoring – OEE
The calculation of the OEE (Overall Equipment Effectiveness) makes it possible to identify and quantify the main plant production losses and monitor the efficiency of production processes.
The OEE allows you to know what happens in the production line and why. This means that it is a very important tool for those who must make decisions.
It connects the actual production of a production plant with the theoretical production for which it was designed and built. The difference between these two values represents the loss of production in terms of:
The OEE simplifies the multiplication of the just described index, therefore OEE = RF (availability) * RV (output) * RQ (quality).
Click here for a detailed explanation of the OEE calculation
How it works
The IMPROVE system interfaces with the ERP (eg. SAP) by requesting a series of information, such as the production order, the model code, the quantities, the standard cycle time, the number of people present in line.
IMPROVE transfers the Production Order data to its database and relates them to the data arriving from the field (from the operator or the PLC).
In this way, for each Production Order, it is possible to have:
- Number of pieces produced
- Number of stops
- Number of non-conformities
From line to office
The IMPROVE system provides customized interfaces for different company roles.
Therefore, from line to office, different people, performing different roles, have access to interfaces created ad hoc, in order to optimize the time necessary to access the information that everyone needs.
The following image shows the periodic OEE of all plant lines:
From your office it will be possible to go into the details of every single line, being able to view the OEE of a given period.
The OEE periodic screen allows the immediate reading of the inefficiency trends and causes. The loss of speed is displayed blue, the loss of quality yellow and the loss caused by stops red. The percentage of OEE is green.
The global OEE!
If we limit ourselves to calculate the OEE of some lines within a plant, perhaps it would not be correct to combine what we do with the concept of Industry 4.0.
What instead represents an added value, above all when the customers are multinationals, is to monitor the global production efficiency, that is everything that concerns and compares different plants located also in different parts of the world.
The assigned manager will then be able to compare the production efficiency of different plants in relation to a specific product.
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