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

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1-4 SIL PolicySIL2 CertificationFigure 1.2 shows a typical SIL loop, including:• the overall safety loop• the ControlLogix portion of the overall safety loop• how other devices (for example, HMI) connect to the loop,while operating outside the loopFigure 1.2Programming SoftwareFor SIL applications, a programmingterminal is not normally connected.HMIFor Diagnostics and Visualization (read-only access to controllers inthe safety loop). For more information, see Chapter 10.Plant-wide Ethernet/SerialOverall Safety LoopSIL2-certified ControlLogix components’ portion of the overall safety loopSensorENBTCNBCNBCNBActuatorControlNetTo othersafety relatedControlLogixremote I/OchassisControlNetTo non-safety related systems outside theControlLogix portion of the SIL2-certified loop.For more information, see Chapter 5.Publication 1756-RM001B-EN-P - October 2003
SIL Policy 1-5IMPORTANTThe system user is responsible for:• the set-up, SIL rating and validation of anysensors or actuators connected to theControlLogix control system.• project management and functional testing.• programming the application software and themodule configuration according to thedescription in the following chapters.The SIL2 portion of the certified system excludes thedevelopment tools and display/human machineinterface (HMI) devices; these tools and devices arenot part of the run time control loop.Proof TestsIEC 61508 requires the user to perform various proof tests of theequipment used in the system. Proof tests are performed atuser-defined times (for example, proof test intervals can be once ayear, once every two years or whatever timeframe is appropriate) andinclude some of the following tests:• Testing of all fault routines to verify that process parameters aremonitored properly and the system reacts properly when a faultcondition arises.• Testing of digital input or output channels to verify that they arenot stuck in the ON or OFF state.• Calibration of analog input and output modules to verify thataccurate data is obtained from and used on the modules.IMPORTANTUsers’ specific applications will determine thetimeframe for the proof test interval.However, keep in mind that the Probability ofFailure on Demand (PFD) calculations listed inTable 1.3 on page 1-10 use a proof test interval ofonce per year. If the proof test interval is changed,the information must be recalculated.For sample PFD calculations for proof test intervalsof 2 and 4 years, see Appendix EFor more information on system proof tests, see Chapter 2, TheControlLogix System. For more information on the necessary I/Omodule proof tests, see Chapter 6, ControlLogix I/O Modules.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 16 and 17: 1-6 SIL PolicySIL2-Certified Contro
Page 18 and 19: 1-8 SIL PolicyHardware Designs andF
Page 20 and 21: 1-10 SIL PolicyCatalogNumberDescrip
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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6-18 ControlLogix I/O ModulesWiring
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6-20 ControlLogix I/O ModulesUsing
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6-22 ControlLogix I/O ModulesFigure
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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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1756-RM001B-EN-P, Using ControlLogix in SIL2 ... - Tuv-fs.com

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