1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com
1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com 1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com
Table of Contents 4Additional Information onHandling Faults in theControlLogix SystemSpurious Failure EstimatesSample Probability of Failure onDemand (PFD) CalculationsAppendix CIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1Appendix DAppendix EProof Test Interval = 2 Years . . . . . . . . . . . . . . . . . . . . . . . E-1Proof Test Interval = 4 Years . . . . . . . . . . . . . . . . . . . . . . . E-3IndexPublication 1756-RM001B-EN-P - October 2003
Chapter 1SIL PolicyThis chapter introduces you to the SIL policy and how theControlLogix system meets the requirements for SIL2 certification.For information about:See page:Introduction to SIL 1-1SIL2 Certification 1-4Proof Tests 1-5SIL2-Certified ControlLogix System Components 1-6Safety Certifications and Compliances 1-7Hardware Designs and Firmware Functions 1-8Difference Between PFD and PFH 1-8SIL Compliance Distribution and Weight 1-14Agency Certifications 1-15Response Times 1-15Program Watchdog Time in ControlLogix System 1-16Contact Information When Device Failure Occurs 1-16Introduction to SILCertain catalog numbers (listed in Table 1.1 on page 1-6) of theControlLogix system are type-approved and certified for use in SIL2applications, according to IEC 61508 and AK4 applications accordingto DIN V19250. SIL requirements are based on the standards current atthe time of certification.These requirements consist of mean time between failures (MTBF),probability of failure, failure rates, diagnostic coverage and safe failurefractions that fulfill SIL2 criteria. The results make the ControlLogixsystem suitable up to, and including, SIL2. When the ControlLogixsystem is in the maintenance or programming mode, the user isresponsible for maintaining a safe state.For support in creation of programs, the PADT (Programming andDebugging Tool) is required. The PADT for ControlLogix isRSLogix 5000, per IEC 61131-3, and this Safety Reference Manual.1 Publication 1756-RM001B-EN-P - October 2003
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Table of Contents 4Additional Information onHandl<strong>in</strong>g Faults <strong>in</strong> the<strong>ControlLogix</strong> SystemSpurious Failure EstimatesSample Probability of Failure onDemand (PFD) CalculationsAppendix CIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1Appendix DAppendix EProof Test Interval = 2 Years . . . . . . . . . . . . . . . . . . . . . . . E-1Proof Test Interval = 4 Years . . . . . . . . . . . . . . . . . . . . . . . E-3IndexPublication <strong>1756</strong>-<strong>RM001B</strong>-<strong>EN</strong>-P - October 2003
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