SIL (Safety Integrity Level) - Safety Integrity Level Certification

        SIL certification is based on IEC 61508, IEC 61511, IEC 61513, IEC 13849-1, IEC 62061, IEC 61800-5-2 and other standards, safety equipment safety integrity level (SIL) or performance level (PL) to assess and Confirmation of a third party assessment, validation and certification. Functional safety certification mainly involves document management (FSM) evaluation, hardware reliability calculation and evaluation, software evaluation, environmental test, EMC electromagnetic compatibility test and so on for safety equipment development process.

        European Electrotechnical Standardization (CENELEC Abbreviation) Committee, one of Europe's three major standardization organizations, CENELEC is responsible for European standardization in the field of electronic engineering. CENELEC, together with Telecommunication Standardization (ETSI) and CEN (standardization of all other technical areas), forms the European Standardization System. 

        SIL certification is divided into four grades, SIL1, SIL2, SIL3, SIL4, including the product and the system at two levels. Among them, the SIL4 requires the highest 

SIL certification is mainly based on standards

1. IEC 61508:

2. IEC61511:

         Safety requirements for safety instrumentation systems in process industry

3. ISO13849-1:

         Safety of machinery - Safety parts of control systems - Part 1: General principles of design

IEC62061:

        Safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems

5. IEC61326-3-2:

        Measurement, control and laboratory electrical equipment - Requirements for electromagnetic compatibility (EMC): safety - related systems and functions for safety - related functions (functional safety).

6. ISO26262:

        Road vehicle system design functional safety

7. IEC61800-5-2:

        Adjustable electrical equipment standards - Part 5-2: Functional safety requirements

8. EN50156

         Measurement and control of digital data communication - Part 3: Industrial network functional safety

9. EN50126

        Railway applications: reliability, availability, maintainability and safety (RAMS) specifications and instructions

10. EN50128

        Railway applications: software for railway control and protection systems

11. EN50129