Phoenix Contact, S.A. - Industrial safety controller and modules
Phoenix Contact PSR-ESP
Interface Of relay for applications of hygiene
The module of relay PSR-ESP of Phoenix Contact is the first interface of relay of the market certified by TÜV like SIL 3 of agreement to IEC 61508. It is as the complement ideal of the systems of control of hygiene, that in a width of only 22,5 mm incorporates two open contacts more an enclosed contact.
The international norm IEC 61508 “functional hygiene of electrical systems, eléctrónicos and of programming (And/And/PE)” establishes the basic requirements for the design of systems related with the hygiene (usually involved in critical applications) of such form that warn or control failures that can put in danger to the workers or to the community. For this provides a method based in the probability that it produce a determinate failure and the severity of the consequences of this and establish like this the designated Levels of Integrated cheese cheese hygiene (SIL), that go from SIL1 until SIL 4.