1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com

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1-10 SIL PolicyCatalogNumberDescriptionFor a 1oo2 architecture, the PFD equation is much more complex. SeeIEC61508 Part 6 Annex B.The PFD values in Table 1.3 are given for the architecture that mustbe used for specific products to achieve SIL 2.Table 1.4 includes the same MTBF and Failure Rate values asTable 1.3 but adds calculated PFH values for high demand/continuousmode operation.The equation for PFH, from IEC61508, for a 1oo1 architecture is:PFH = λ DU = λ/2 (1 - DC)1756-Axx ControlLogix Chassis 40,143,919 (2)For a 1oo2 architecture, see Part 6 of IEC61508. The values inTable 1.4 are given for the architecture that must be used for specificproducts to achieve SIL2.Table 1.3ControlLogix Product Probability of Failure on Demand CalculationsMean Time λ (5) Calculated PFD:Between Failure(MTBF) (1) 1oo1 architecture 1oo2 architecture(average (3) )2.49E-085.58E-061756-CNB ControlNet Bridge 3,596,087 (2) 2.78E-07 6.23E-051756-CNBR Redundant ControlNet Bridge 3,385,813 (2) 2.95E-07 6.62E-051756-IA16I AC Isolated Input 4,144,192 2.41E-07 4.30E-061756-IA8D AC Diagnostic Input 3,856,320 2.59E-07 4.63E-061756-IB16D DC Diagnostic Input 7,386,774 1.35E-07 2.40E-061756-IB16I DC Isolated Input 3,562,624 2.81E-07 5.02E-061756-IF8 Analog Input 1,690,694 5.91E-07 1.08E-051756-IR6I RTD Input 3,456,960 2.89E-07 5.17E-061756-IT6I Thermocouple Input 4,784,000 2.09E-07 3.72E-06Publication 1756-RM001B-EN-P - October 2003
SIL Policy 1-11Catalog DescriptionMean Time λ (5) Calculated PFD:NumberBetween Failure(MTBF) (1) 1oo1 architecture 1oo2 architecture1756-L55M16 ControlLogix 5555 Controller 2,855,348 (2) 3.50E-07 7.84E-051756-OA16I AC Isolated Output 1,994,720 5.01E-07 9.07E-061756-OA8D AC Diagnostic Output 3,839,680 2.60E-07 5.83E-051756-OB16D DC Diagnostic Output 4,520,534 2.21E-07 4.96E-051756-OB16I DC Isolated Output 1,703,520 5.87E-07 1.07E-051756-OB8EI DC Fused Output 1,239,680 8.07E-07 1.48E-051756-OF8 Analog Output 2,054,694 4.87E-07 8.80E-061756-OX8I Contact Output 6,639,360 1.51E-07 2.67E-061756-PA75 AC Power Supply 7,301,935 (2) 1.37E-07 3.07E-051756-PA75R AC Redundant Power Supply 4,380,000,000 (2), (4) 2.28E-10 5.11E-081756-PB75 DC Power Supply 7,100,760 (2) 1.41E-07 3.15E-051756-PB75R DC Redundant Power Supply 4,380,000,000 (2), (4) 2.28E-10 5.11E-081756-PSCAPower Sup Chassis AdapterModule45,146,727 (2) 2.21E-08 4.96E-06(1) MTBF measured in hours.(2) Calculated using field based values for components(3) Average = The arithmetic average of the MTBFs of all five Chassis (1756-A4, A7, A10, A13, and A17)(4)(5)Assumes that both power supplies fail simultaneouslyλ = Failure Rate = 1/MTBFTable 1.3ControlLogix Product Probability of Failure on Demand CalculationsFor PFD calculations with proof test intervals of 2 and 4 years, seeAppendix E.Publication 1756-RM001B-EN-P - October 2003
Page 1: Using ControlLogixin SIL2 Applicati
Page 4 and 5: Summary of Changes 2Notes:Publicati
Page 6 and 7: Preface 2Table Preface.1Section: Ti
Page 8 and 9: Table of Contents 2ControlLogix Com
Page 10 and 11: Table of Contents 4Additional Infor
Page 12 and 13: 1-2 SIL PolicyThe TUV Rheinland has
Page 14 and 15: 1-4 SIL PolicySIL2 CertificationFig
Page 16 and 17: 1-6 SIL PolicySIL2-Certified Contro
Page 18 and 19: 1-8 SIL PolicyHardware Designs andF
Page 22 and 23: 1-12 SIL PolicyCatalogNumberDescrip
Page 24 and 25: 1-14 SIL PolicySIL ComplianceDistri
Page 26 and 27: 1-16 SIL PolicyProgram Watchdog Tim
Page 28 and 29: 2-2 The ControlLogix SystemIf an an
Page 30 and 31: 2-4 The ControlLogix SystemData Ech
Page 32 and 33: 2-6 The ControlLogix SystemSoftware
Page 34 and 35: 2-8 The ControlLogix SystemNotes:Pu
Page 36 and 37: 3-2 ControlLogix System HardwareCon
Page 38 and 39: 3-4 ControlLogix System HardwareRec
Page 40 and 41: 3-6 ControlLogix System HardwareNot
Page 42 and 43: 4-2 ControlLogix ControllerRecommen
Page 44 and 45: 5-2 ControlLogix Communications Mod
Page 46 and 47: 5-4 ControlLogix Communications Mod
Page 48 and 49: 6-2 ControlLogix I/O ModulesFigure
Page 50 and 51: 6-4 ControlLogix I/O ModulesModule
Page 52 and 53: 6-6 ControlLogix I/O ModulesWiring
Page 54 and 55: 6-8 ControlLogix I/O ModulesGeneral
Page 58 and 59: 6-12 ControlLogix I/O ModulesApplic
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6-24 ControlLogix I/O ModulesWiring
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6-26 ControlLogix I/O ModulesCheckl
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7-2 Faults in the ControlLogix Syst
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7-4 Faults in the ControlLogix Syst
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8-2 General Requirements for Applic
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9-2 Technical SIL2 Requirements for
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10-2 Use and Application of Human t
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10-4 Use and Application of Human t
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A-2 Response Times in ControlLogixE
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A-4 Response Times in ControlLogixR
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B-2 System Self-Testing and User-Pr
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C-2 Additional Information on Handl
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D-2 Spurious Failure EstimatesNotes
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E-2 Sample Probability of Failure o
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E-4 Sample Probability of Failure o
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2 IndexMMean time between failures
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