Home » Fieldbus Foundation Updates Device Coupler Test Spec
Fieldbus Foundation Updates Device Coupler Test Spec
The Fieldbus Foundation updated its open, non-proprietary Foundation fieldbus physical layer technology, improving reliability and availability of fieldbus control system installations with enhancements to the H1 (31.25 kbps) device coupler test specification. The changes will also optimize device interoperability and integration, according to the Fieldbus Foundation.
Device couplers or isolated device couplers are installed where the fieldbus trunk is connected to the various device spurs. Isolated device couplers are specifically designed to allow automation end users to connect more devices per coupler while permitting live segment work in hazardous plant areas. These couplers provide isolated, conditioned power to multiple fieldbus devices and protect against short circuits caused by excess current in a spur. By enabling more devices per segment, they also help reduce controller I/O points and associated installation costs.
The Foundation fieldbus device coupler test specification includes criteria from the IEC 61158 standard and additional functional tests such as input impedance, short-circuit reaction time, and bus voltage consumption. The specification is designed for coupler manufacturers to perform a standard set of tests against their implementation. A team of volunteers — current members of the foundation who supply coupler products, as well as end users employing registered couplers — developed the test cases.
"Our device coupler test specification is intended to provide a high level of robustness in fieldbus systems," said Stephen Mitschke, the Fieldbus Foundation's director-fieldbus products. “The resulting registered products are tested to perform optimally with registered power supplies and conditioners, as well as registered H1 cable.”
The latest enhancements to the Foundation fieldbus physical layer specifications will provide end users with greater confidence that registered fieldbus equipment can be employed in a tightly integrated, interoperable control system architecture that is well suited to the most demanding industrial environments, Mitschke added.
Distech Controls Welcomes Shareholder Samsung Ventures
Financing Will Be Used to Accelerate Company Growth and Development Roadmap Worldwide
Winners of AmeriStar 2013 Package Awards Competition
IoPP Announces Top Competitors in Package Innovation, Sustainability, Protection, Economics, Performance and Marketing
Igus Wins Two Awards at iF Product Design Competition
Triflex R TRLF Cable Carrier Designed for Three-Axis Movement for Robotic Applications
Engineering Graduates Make Top 10 Highest Starting Salaries List
NACE Reports Engineers Took Seven of the Top 10 Spots in April Survey
Major Tool & Machine Purchases Large-Part Machining Systems From MAG
New U5 Machine Will Initially Replace Production Capacity During the Rebuild of Massive DSI Gantry Mill/Turn Machine
ODVA Forms SIG for Machinery Information
Developing Standards for the Exchange of Information Between Machines, and Between Machines and Supervisory Systems
Digital Manufacturing Market Poised for Global Growth
Frost & Sullivan Analysis Finds Market Earned Revenues of $704 Million in 2012 and Is Estimated to Reach $928 Million in 2016
Strong Growth Forecast for Direct Drives
IMS Research/IHS Report Shows Global Market Is Predicted to Be Worth Nearly $300 Million in 2016
How SEL Control System Reduces Power Outage Durations
DAC System Isolates a Faulted Circuit, Remotely Closed Breakers and Restored Power to Unfaulted Portions of a Network for Chattanooga's Electric Power Board
Wind Generators Prove Bigger Is Always Better
IMS Research Report Shows Average Power Rating Expected to Rise to Nearly 2.4 Megawatts by 2017
- All news »
Access the entire print issue on-line and be notified each month via e-mail when your new issue is ready for you. Subscribe today.
- Featured White Papers