OEE is the multiplication product of 3 independent effectiveness measures:

Equipment Availability Index is the ratio of production time to total available time. It is the ratio of machine actual working hours divided by available work hours.

Total Available Time = Job Duration

Job time is clocked from the moment a job is activated in Matics. This is the start time of a job. Clocking ends when a job is removed from the machine. This is the end time of the job.

Total available time equals the total time elapsed between the job start time and job end time. Without exception.

Production Time = Actual Work Time
Production time is monitored by IoT sensors physically attached to the machinery on the production floor.
Production time is the time the equipment was operating. Non-working times, i.e., time when the machine was inactive FOR ANY REASON will not be included. This information is precise to the seconds.

Production time is automatically gathered by the sensors. The only manual input required is to activate a job, report when job setup has ended, and end the job. Normally, a job will end when the next job is activated.

Equipment Rate Efficiency Index is a ratio of the ideal production rate to the actual production rate. Multiply the following 2 measures to calculate rate efficiency:

Cycle Time Efficiency

Cycle time efficiency is a ratio of Average Cycle Time to Ideal Cycle Time.

Ideal Cycle Time is the cycle time setpoint of the job recipe.

Average Cycle Time is the ratio of the total number of cycles divided by the total production time. The total number of cycles is captured by Matics directly from sensors attached to the machine on the production floor.

Units per Cycle Efficiency

Units per cycle efficiency, or cavity efficiency, is based on the ratio of actual units per cycle / standard units per cycle. This measure only applies to processes that produce multiple units per cycle. If 1 unit is produced per cycle, than this measure simply equals.

An injection mold provides a common example for a case where this measure is relevant. Defective or blocked-up cavities could be manually reported by changing the number of units per cycle in the job recipe. As a result, Matics will automatically adjust its calculation of units produced per cycle. For example, if 3 of 20 cavities become blocked in the course of a production run, the rate efficiency measure will be reduced by 3/20 from the moment (i.e. cycle) that the adjustment is reported.

Quality

Equipment Quality Products Rate is a ratio of acceptable production to total production. It exposes losses due to rework, scrap and waste.

Total Production is directly measured by multiplying the total number of cycles by the number of units per cycle.

Acceptable Production relies on manual reporting of rejects. Rejects can be reported during or post-production and adjustments up and down are permissible. It is possible to create a rule for any units produced while the job is in setup mode (in Matics) to be automatically reported as rejects. The adjustment will apply once the operator ends setup in Matics.