Product category:
Plant- and Machine-Wide Communications
News Release from: Ethernet Direct | Subject: Ethernet Direct devices
Edited by the Engineeringtalk Editorial
Team on 16 July 2007
Ethernet devices guard against network
disruption
Having an industrial Ethernet device with high MTBF will protect the system against unexpected network disruptions.
Ethernet Direct has released a complete range of industrial Ethernet solutions offer a long mean time between failure (MTBF) for maximum reliability in industrial applications One of the key issues in deploying an industrial Ethernet device is to ensure device reliability in terms of quality and device availability in terms of functions
This article was originally published on Engineeringtalk on 7 Aug 2006 at 8.00am (UK)
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Industrial Ethernet is the implementation of Ethernet to carry information inside or outside a plant floor.
Where a harsh environment is present, having an industrial Ethernet device with high MTBF will protect the system against unexpected network disruption.
The MTBF of Ethernet Direct's products is calculated based on Mil-Hdbk-217F, GB and Bellcore.
Stringent analysis is implemented with respect to the electronic components and the maturity of the product design.
Parts count MTBF is a first approximation of the calculated reliability of a device or system.
The MTBF is a calculated metric based on one of two industry standards.
Mil-Hdbk-217 is a military standard for the calculation of reliability of a device or system.
Bellcore is a commercial standard used in commercial and industrial equipment.
The MTBF analysis accounts for the pedigree of components used, improvements relating to burn-in to eliminate mortality failures, operating environment and temperature.
In this analysis, a generic default for the stress is applied to each component type used in the Ethernet Direct products.
Stress-based analysis accounts for the actual stress applied to each component in the product.
It shows a detailed percentage accounting of the applicable voltage, current and power stress on each individual element within a device or system with regards to the component rating.
Most failures in a device or system are a direct result of overstress of the element compared with its rating.
These common issues have been resolved by Ethernet Direct during the early stages of product design.
Understanding the logic behind MTBF when choosing the right industrial Ethernet device is important.
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