Fault metrics ratings, Mean time between failure, Fault metrics ratings mean time between failure – Rockwell Automation FactoryTalk Metrics User Guide User Manual
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Chapter 3 Collecting Performance Data
This reduces to:
FactoryTalk Metrics gathers and stores all of the raw data necessary
to make this calculation for specific time periods, as well as by
activity area, by part number, and by shift. All of the individual
components of the calculation are stored and available for analysis.
OEE is a valuable method of analyzing performance, because it is
widely recognized and can be applied to any type of industry, factory,
or machine. However, it is merely the default efficiency calculation
performed by FactoryTalk Metrics, and additional or alternate
calculations can be implemented. Furthermore, FactoryTalk Metrics
supports the collection of detailed event data, which can be used to
analyze the specific causes of inefficiencies.
FactoryTalk Metrics uses the Fault Metrics ratings to measure the
reliability of manufacturing equipment. These metrics provide a
simple way to determine quickly if an activity area is performing
reliably. The Fault Metrics values can be used to assess a single
machine’s reliability over time, or to compare the reliability of
machines to each other.
MTBF = Uptime ⁄ FaultCount
Mean Time Between Failure (MTBF) is the ratio of running time to
the total number of failures. It measures the average amount of time
when a piece of equipment was in a running state between failures.
MTBF is a derived field that contains aggregate functions and, as
Fault Metrics Ratings
Mean Time Between Failure
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Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014