FIRST TO MARKET: SIL 3 CAPABLE FAILSAFE I/O MODULES

Siemens 13/09/2011

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Siemens Industry Automation & Drive Technologies has launched the first SIL 3 capable failsafe I/O modules for the Siemens ET200iSP hazardous area remote I/O station.

The first in the market to be suitable for Zone 1 hazardous areas, the modules make a step forward in the integration of high levels of functional safety and automation system control within a single unit.

The new modules which are ideal for use in the oil & gas and chemicals industries, deliver a number of key benefits such as a simplified safety verification process, tangible cost savings and scalable solutions for distributed safety and control.

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 when integrated with the Simatic ET200iSP distributed I/O system, the modules can be used directly 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 emergency shut down, boiler protection or fire and gas equipment.

The intrinsically safe Profibus version (RS485iS) is used for communication between the Simatic ET200iSP distributed I/O system and the higher-level controllers. The same cable is used 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, TUV-certified library blocks are available in the Step 7 option packages Distributed Safety and S7 F-Systems for fail-safe applications.

For more information please contact:

Kerry Ryder on 0161 446 5298
Email: Kerry.ryder@siemens.com