By definition, OEE is based around total material output from a given machine. While OEE calculations can be set up to be unique per machine, anything which is not set to the standard for OEE calculations can cause trouble – ei3 does not recommend doing so.

Doing so can create rare occurrences where the good material value can be higher than total material value when examining the minute by minute raw data from the machine using the data export tool. This usually occurs with the data at the beginning of a shift/day, job run, or after a downtime event where material from the previous event hasn’t fully made its way through the equipment. When this happens, the system uses the OEE standard of machine output on all calculations used in ei3.


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