I am looking for suggestions for PLC input cards which comply with the safety regulation category 3 EN-954-1.

Pls reply urgently.
Ahmed

 

Hello Ahmed;

Siemens has a line of Safety PLCs that can comply up to Cat 4/Sil 3 when used with their specialized software and hardware, including communications over Pofibus (with ProfiSafe profile). The Fail-safe digital and analog I/O modules are designated as SM326 in the search pattern of the Siemens' web page:

http://www4.ad.siemens.de/csinfo/livelink.exe?func=cslib.csinfo2&siteid=cs&lang=en

Hope this helps,
Daniel Chartier

 

look at the schneider electric (telemecanique) premium plc, they offer safety regulation category 4 EN-954-1 modules which exceeds the cat. 3 requirements. http://www.modicon.com then choose premium to find information.

 

The Schneider Electric TSX Premium PLC with the TSX PAY Safety Module are suitable for Emergency stop and limit switch monitoring applications, demanding a level of safety up to Category 4 according to standard EN954-1 (parts of control systems relating to safety).

Information on the TSX Premium PLC line can be found at http://www.modicon.com

Regards
Robert Willis
Square D Company
Houston, TX