Yokogawa - Model ProSafe-SLS -Solid State Process Safety System (SIS)
The solid-state, hard-wired ProSafe-SLS covers all requirements in process industries. The product line covers specific requirements for individual safety instrumented systems and offers all safety integrity levels (SIL 3-4) for the oil & gas, petrochemical, chemical, nuclear and conventional power industries. ProSafe-SLS safety instrumented system is also fully integrated with Yokogawa's CENTUM VP process control system together with ProSafe-RS safety system as well as FAST/TOOLS SCADA software package. For more information: https://www.yokogawa.com/solutions/products-and-services/control/control-and-safety-system/safety-instrumented-systems-sis/process-safety-system-prosafe-sls/The ProSafe-SLS is a Safety Instrumented System that was designed for applications, which require the highest Safety Integrity Levels (SIL 3 & 4). It employs solid-state elements to process the functional logic. This technology is capable of executing all typical Safety tasks, as well as the related supplementary Non-Safety-Critical functions. This comprises interfacing with a Human Machine Interface, Process Control System, Sequence of Event Recording system, SCADA system, etc. The sophisticated design and superior Safety performance have created the Safety reference standard for solid-state Safety Instrumented Systems. A radical Safety achievement, is the elimination of software for an operating system and for self-diagnostics. Instead, a unique inherent self-test technology is employed, throughout all Safety-related parts of the ProSafe-SLS system.
The modules that are used to build a system solution are a grouped in various categories as summarized below:
- Input modules
- Logic & Timer modules
- Output modules
- Power & Clock modules
- Auxiliary modules
- Communication & Interface modules
Interconnection wiring actually programs the application into the system.