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Fail-safe distributed I/O modules for use up to Ex Zone 1/21

24.11.2010
The Siemens Industry Automation Division has developed three fail-safe modules for the Simatic ET 200iSP intrinsically safe distributed I/O system.

The new modules 8F-DI Ex Namur, 4F-DO Ex 40mA/17.4V and 4F-AI Ex Hart meet the high safety requirements in accordance with the relevant standards such as IEC 61508 to SIL 3. This means that, integrated into the Simatic ET 200iSP distributed I/O system, they can be used direct without Ex barrier up to Ex Zone 1/21.


The connected intrinsically safe sensors and actuators can be run into Ex Zone 0/20. The new modules are suitable for applications such as ESD (emergency shut down), boiler protection, or fire and gas equipment. For fire and gas applications, the new modules have the important diagnostics functions "Last valid value" and "Energize-to-trip".

The intrinsically safe Profibus version is used for communication between the Simatic ET 200iSP distributed I/O system and the higher-level controllers. The same cable is used here for transferring the standard automation data and the fail-safe signals in accordance with the Profisafe profile. The Simatic ET 200iSP is configured with the Step 7 engineering tool. Off-the-shelf, TÜV-certified library blocks are available in the Step 7 option packages Distributed Safety and S7 F-Systems for fail-safe applications.

The Siemens Industry Sector (Erlangen, Germany) is the world's leading supplier of environmentally friendly production, transportation, building and lighting technologies. With integrated automation technologies and comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. The Sector consists of six Divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility and Osram. With around 207,000 employees worldwide Siemens Industry posted sales of about EUR35 billion in fiscal year 2009. http://www.siemens.com/industry

The Siemens Industry Automation Division (Nuremberg, Germany) is a global leader in the fields of automation systems, industrial controls and industrial software. Its portfolio ranges from standard products for the manufacturing and process industries to solutions for whole industrial sectors that encompass the automation of entire automobile production facilities and chemical plants. As a leading software supplier, Industry Automation optimizes the entire value added chain of manufacturers – from product design and development to production, sales and a wide range of maintenance services. With around 39,000 employees worldwide (September 30), Siemens Industry Automation achieved sales of €7.0 billion in fiscal year 2009. www.siemens.com/industryautomation

Reference Number: IIA2010112506e

Gerhard Stauss | Siemens Industry
Further information:
http://www.siemens.com/et200isp

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