Related Manuals for Emerson Mobrey Series
Summary of Contents for Emerson Mobrey Series
- Page 1 Functional Safety Manual M310/FSM, Rev BA April 2017 ™ Mobrey Magnetic Level Switches Functional Safety Manual...
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Page 3: Table Of Contents
Functional Safety Manual Contents M310/FSM, Rev BA April 2017 Contents 1Section 1: Contents 2Section 1: Introduction Scope and purpose of the safety manual........1 Skill Level Requirement . - Page 4 Contents Functional Safety Manual M310/FSM, Rev BA April 2017 Notification of failures ..........13 Useful lifetime.
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Page 5: Scope And Purpose Of The Safety Manual
Functional Safety Manual Introduction M310/FSM, Rev BA April 2017 Section 1 Introduction Scope and purpose of the safety manual This safety manual contains the information to design, install, verify and maintain a Safety Instrumented Function (SIF) utilizing the Mobrey Magnetic Level Switch. The manual provides the necessary requirements to enable the integration of the horizontal point-level float switch when showing compliance with the IEC 61508 or IEC 61511 functional safety standards. -
Page 6: Terms, Abbreviations, And Acronyms
Introduction Functional Safety Manual M310/FSM, Rev BA April 2017 Terms, abbreviations, and acronyms Table 1-1. Terms, Abbreviations, and Acronyms Term Definition Basic safety Freedom from unacceptable risk of harm BPCS Basic Process Control System – a system which responds to input signals from the process, its associated equipment, other programmable systems and/or an operator and generates output signals causing the process and its associated equipment to operate in the desired manner but which does not perform any... -
Page 7: Documentation And Standards
Functional Safety Manual Introduction M310/FSM, Rev BA April 2017 Documentation and standards This section lists the documentation and standards referred to by this safety manual Table 1-2. Associated Documentation Documents Purpose of documents IEC 61508-2: ed2, 2010 Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems Exida EM 10/08-36 R001 FMEDA Report Version V1, Revision R2 for the Mobrey magnetic... - Page 8 Introduction Functional Safety Manual M310/FSM, Rev BA April 2017 Introduction...
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Page 9: Operation Principle
Note For all product information and documentation downloads, see the on-line Mobrey Magnetic Level Switch web page at Emerson.com/Mobrey. Operation principle The level switch is designed to open or close a circuit (“switch”) as a changing liquid level within a vessel passes the level of the float (the Switch Point). -
Page 10: Level Switch Purpose
IEC 61508. A copy of the third party SIL certificate can be ordered using the part number MBY-CERT-SIL-L2049. Note For all product information and documentation downloads, see the on-line Mobrey Magnetic Level Switch web page at Emerson.com/Mobrey. Product Description... -
Page 11: Using The Level Switch
Design verification A detailed Failure Modes, Effects and Diagnostics Analysis (FMEDA) report for the Mobrey Magnetic Level Switch is available from Emerson. This report details all failure rates and failure modes as well as expected lifetime. Note The FMEDA report is available from the Mobrey Magnetic Horizontal Float Switches web site page at Emerson.com/Mobrey. -
Page 12: Sil Capability
Note The FMEDA report is available from the Mobrey Magnetic Horizontal Float Switches web site page at Emerson.com/Mobrey. In the Documents section, there are SIL documents including the FMEDA report and this safety manual. Table 3-1. Failure Rates for Level Switch, 4-contact Versions – Types D and P... -
Page 13: Connection Of The Level Switch To The Sis Logic Solver
Functional Safety Manual Designing a Safety Function Using the Level Switch M310/FSM, Rev BA April 2017 Table 3-2. Failure Rates for Level Switch, 6-contact Versions – Types D6, P6, H6, and B6 Failure rate (FIT) Failure category Maximum detection Minimum detection Fail Safe Detected Fail Safe Undetected Fail Dangerous Detected... - Page 14 Designing a Safety Function Using the Level Switch Functional Safety Manual M310/FSM, Rev BA April 2017 Designing a Safety Function Using the Level Switch...
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Page 15: Installation
Installation and Commissioning Note For all product information and documentation downloads, see the on-line Mobrey Magnetic Level Switch web page at Emerson.com/Mobrey. Installation The Mobrey Magnetic Level Switch (“level switch”) must be installed as described in the installation section of the product manual M310. Check that environmental conditions do not exceed the ratings in the specification section. - Page 16 Installation and Commissioning Functional Safety Manual M310/FSM, Rev BA April 2017 Installation and Commissioning...
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Page 17: Proof-Test Requirement
Emerson must be informed when the level switch is required to be replaced due to failure. The occurred failure shall be documented and reported to Emerson using the contact details on the back page of this functional safety manual. - Page 18 Functional Safety Manual Operation and Maintenance M310/FSM, Rev BA April 2017 Operation and Maintenance...
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Page 19: Suggested Proof-Test
Proposed Proof-test Procedure Functional Safety Manual April 2017 M310, Rev BA Appendix A Proposed Proof-test Procedure Suggested proof-test According to Section 7.4.3.2.2 (f) of the standard IEC 61508-2, proof-tests shall be undertaken to reveal dangerous faults which are undetected by diagnostic tests. This means that it is necessary to specify how dangerous undetected faults which have been noted during the Failure Modes, Effects, and Diagnostic Analysis can be detected during proof-testing. - Page 20 Functional Safety Manual Proposed Proof-test Procedure April 2017 M310, Rev BA Proposed Proof-test Procedure...
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Page 21: List Of Level Switches Certified To Iec 61508
Level Switches Certified to IEC 61508 Manual Supplement April 2017 M310, Rev BA Appendix B Level Switches Certified to IEC 61508 List of Level Switches Certified to IEC 61508 Tables B-1, B-2, and list all Mobrey Magnetic Level Switch options that are certified to IEC 61508. In general, this is the entire range with the exception of the marine versions, pneumatic switch mechanisms, and some floats. - Page 22 Manual Supplement Level Switches Certified to IEC 61508 April 2017 M310, Rev BA Table B-1. Level Switches for General Purpose Applications (Stainless Steel Wet-side) Model Product description Switch Flange (head) Flange (head) Mobrey A EN 1092-1 PN 16 (DN 125) Mobrey A EN 1092-1 DN 65 PN 40 (DN 65) 3 in.
- Page 23 Level Switches Certified to IEC 61508 Manual Supplement April 2017 M310, Rev BA Table B-2. Level Switches for General Purpose Applications (Aluminum Bronze Wet-side) Model Product description Switch Flange (head) Mobrey A flange Switch mechanism Electrical: 2 independent Single Pole Single Throw (SPST) contact sets As Type DB but with gold plated contacts Electrical: 2 independent circuits of double pole changeover contact sets As Type D6B but with gold plated contacts...
- Page 24 Manual Supplement Level Switches Certified to IEC 61508 April 2017 M310, Rev BA Switch Mechanism Electrical: 2 independent Single Pole Single Throw (SPST) contact sets As Type D but with gold plated contacts Electrical: 2 independent circuits of double pole changeover contact sets As Type D6 but with gold plated contacts As Type D6 but with gold plated contacts and hermetically sealed moving parts Enclosure / Housing...
- Page 26 Sale page. Shakopee, MN 55379, USA The Emerson logo is a trademark and service mark of Emerson Electric Co. Mobrey is a trademark of Rosemount Measurement Ltd. +1 800 999 9307 or +1 952 906 8888 Rosemount and Rosemount logotype are trademarks of Emerson.