Fieldbus FOUNDATION receives TÜV protocol-type approval
Austin, TX — Fieldbus F OUNDATION said that TÜV Anlagentechnik GmbH, Automation, Software and Information Technology, a global, independent and accredited testing agency, has granted protocol-type approval for the Fieldbus Foundation safety instrumented systems specifications. The specifications are in compliance with International Electrotechnical Commission (IEC) 61508 standard (functional safety of electrical/electronic/programmable electronic safety-related systems) requirements up to, and including, Safety Integrity Level 3 (SIL 3). No changes were required to the existing H1 protocol to add the safety instrumented systems protocolextensions, indicating the value of the forward-thinking design.
With the TÜV approval, F OUNDATION technology can provide a comprehensive solution for safety-instrumented systems in a wide range of industrial applications. End users will be able to choose devices meeting the requirements of IEC 61511 from multiple suppliers, instead of being restricted to devices designed specifically for a proprietary safety system platform. IEC 61511 is also available as ANSI/ISA-84.00.01-2004.
The Safety Instrumented System project was initiated by end users and approved by the Fieldbus Foundation's board of directors in October 2002. Companies participating include: ABB, BP, Chevron, Cooper Crouse-Hinds GmbH, DuPont, Emerson Process Management, E+H Process Solutions, ExxonMobil, Fieldbus Diagnostics, Fieldbus Inc., Flowserve, HIMA, Hirshmann, Honeywell, ICE-Pros Inc., Invensys/Triconex, Magnetrol, Metso Automation, MTL, Relcom, R&M Industrieservice, Rockwell Automation, Rotork Control Systems, Saudi Aramco, Shell Global Solutions, Smar, Softing, TopWorx, TÜV, Tyco/Westlock and Yokogawa.
At yearend 2003 TÜV approved the overall concept. At a meeting hosted by Shell Global Solutions in Amsterdam, The Netherlands, the development team met with external experts, in March 2004, to review the initial specifications. Comments were resolved and the management team developed the top-level project plan forlaboratory validation testing.
During the lab test phase, conducted at R&M Industrieservice in Frankfurt, Germany, each prototype supplier independently implemented the foundation’s safety instrumented systems specifications. In parallel, the test team separately developed test cases and prepared expected test results.
— Richard Phelps , senior editor, Control Engineering