BS EN 61800-5-2:2017 – TC:2020 Edition
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Tracked Changes. Adjustable speed electrical power drive systems – Safety requirements. Functional
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 220 |
IEC 61800-5-2:2016 is available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 61800-5-2:2016 specifies requirements and makes recommendations for the design and development, integration and validation of safety related power drive systems (PDS(SR)) in terms of their functional safety considerations. It applies to adjustable speed electrical power drive systems covered by the other parts of the IEC 61800 series of standards as referred in IEC 61800-2. IEC 61800-5-2, which is a product standard, sets out safety-related considerations of PDS(SR)s in terms of the framework of IEC 61508, and introduces requirements for PDS(SR)s as subsystems of a safety-related system. It is intended to facilitate the realisation of the electrical/ electronic/programmable electronic (E/E/PE) parts of a PDS(SR) in relation to the safety performance of safety sub-function(s) of a PDS. This edition includes the following significant technical changes with respect to the previous edition: a) rational added in the scope why low demand mode is not covered by this standard, b) definition added for: ‘category’ and ‘safety function’, c) ‘Other sub-functions’ sorted into ‘Monitoring sub-functions’ and ‘Output functions’, d) deleted ‘proof test’ throughout the document because for PDS(SR) a proof test is not applicable, e) replaced the term ‘safety function’ by ‘safety sub-function’ throughout the document, f) Updated references to IEC 61508 series Ed.2010, g) Added the principle rules of ISO 13849-1 and reference to tables of ISO 13849-2, h) 6.1.6 Text replaced by Table 2, i) 6.1.7 Integrated circuits with on-chip redundancy matched to changed requirement in IEC 61508-2: 2010, Annex E, j) 6.2.8 Design requirements for thermal immunity of a PDS(SR) k) 6.2.9 Design requirements for mechanical immunity of a PDS(SR), l) 6.1.6 SIL for multiple safety sub-functions within one PDS(SR), m) 6.1.7 Integrated circuits with on-chip redundancy, n) 6.2.1 Basic and well-tried safety principles, o) 6.2.2.1.4 Diagnostic test interval when the hardware fault tolerance is greater than zero, p) 6.2.5.2.7 PDS(SR) parameterization, q) 9 Test requirements, r) 9.3 Electromagnetic (EM) immunity testing, s) 9.4 Thermal immunity testing, t) 9.5 Mechanical immunity testing, u) Annex A Sequential task table, v) Annex D, D.3.16, Motion and position feedback sensors updated, w) Annex E Electromagnetic immunity (EM) requirement for PDS(SR), x) Annex F Estimation of PFDavg value for low demand with given PFH value.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 130 | National foreword |
| 137 | English CONTENTS |
| 141 | FOREWORD |
| 143 | INTRODUCTION |
| 144 | 1 Scope |
| 145 | 2 Normative references Figures Figure 1 – Installation and functional parts of a PDS(SR) |
| 147 | 3 Terms and definitions Tables Table 1 – Alphabetical list of terms and definitions |
| 153 | 4 Designated safety sub-functions 4.1 General |
| 154 | 4.2 Safety sub-functions 4.2.1 General Figure 2 – Safety function consisting of safety sub-functions |
| 155 | 4.2.2 Limit values 4.2.3 Stopping functions |
| 156 | 4.2.4 Monitoring functions |
| 158 | 4.2.5 Output functions – Safe brake control (SBC) 5 Management of functional safety 5.1 Objective 5.2 Requirements for the management of functional safety 5.3 PDS(SR) development lifecycle |
| 159 | 5.4 Planning of PDS(SR) functional safety management Figure 3 – PDS(SR) development lifecycle |
| 161 | 5.5 Safety requirements specification (SRS) for a PDS(SR) 5.5.1 General 5.5.2 Safety sub-functions requirements specification |
| 162 | 5.5.3 Safety integrity requirements specification |
| 163 | 5.6 PDS(SR) safety system architecture specification 5.6.1 General 5.6.2 Requirements for safety system architecture specification |
| 164 | 6 Requirements for design and development of a PDS(SR) 6.1 General requirements 6.1.1 Change in operational status 6.1.2 Design standards 6.1.3 Realisation 6.1.4 Safety integrity and fault detection |
| 165 | 6.1.5 Safety and non-safety sub-functions 6.1.6 SIL for multiple safety sub-functions within one PDS(SR) Table 2 – Example for determining the SIL from hardware and software independence |
| 166 | 6.1.7 Integrated circuits with on-chip redundancy 6.1.8 Software requirements 6.1.9 Design documentation 6.2 PDS(SR) design requirements 6.2.1 Basic and well-tried safety principles 6.2.2 Requirements for the estimation of the probability of dangerous random hardware failures per hour (PFH) |
| 167 | Table 3 – Safety integrity levels: target failure measures for a PDS(SR) safety sub-function |
| 169 | 6.2.3 Architectural constraints |
| 170 | 6.2.4 Estimation of safe failure fraction (SFF) Table 4 – Maximum allowable safety integrity level for a safety sub-function carried out by a type A safety-related subsystem Table 5 – Maximum allowable safety integrity level for a safety sub-function carried out by a type B safety-related subsystem |
| 171 | 6.2.5 Requirements for systematic safety integrity of a PDS(SR) and PDS(SR) subsystems |
| 174 | 6.2.6 Design requirements for electromagnetic (EM) immunity of a PDS(SR) 6.2.7 Design requirements for thermal immunity of a PDS(SR) 6.2.8 Design requirements for mechanical immunity of a PDS(SR) 6.3 Behaviour on detection of fault 6.3.1 Fault detection 6.3.2 Fault tolerance greater than zero 6.3.3 Fault tolerance zero 6.4 Additional requirements for data communications |
| 175 | 6.5 PDS(SR) integration and testing requirements 6.5.1 Hardware integration 6.5.2 Software integration 6.5.3 Modifications during integration 6.5.4 Applicable integration tests 6.5.5 Test documentation |
| 176 | 7 Information for use 7.1 General 7.2 Information and instructions for safe application of a PDS(SR) |
| 177 | 8 Verification and validation 8.1 General |
| 178 | 8.4 Documentation 9 Test requirements 9.1 Planning of tests 9.2 Functional testing |
| 179 | 9.3 Electromagnetic (EM) immunity testing 9.3.1 General 9.3.2 Intended EM environment 9.3.3 Performance criterion (fail safe state – FS) 9.4 Thermal immunity testing 9.4.1 General |
| 180 | 9.4.2 Functional thermal test 9.4.3 Component thermal test 9.5 Mechanical immunity testing 9.5.1 General 9.5.2 Vibration test 9.5.3 Shock test 9.5.4 Performance criterion for mechanical immunity tests (fail safe state – FS) 9.6 Test documentation |
| 181 | 10 Modification 10.1 Objective 10.2 Requirements 10.2.1 General 10.2.2 Modification request 10.2.3 Impact analysis 10.2.4 Authorization 10.2.5 Documentation |
| 182 | Annexes Annex A (informative) Sequential task table Table A.1 – Design and development procedure for PDS(SR) |
| 186 | Annex B (informative) Example for estimation of PFH B.1 General B.2 Example PDS(SR) structure B.2.1 General Figure B.1 – Example PDS(SR) |
| 187 | B.2.2 Subsystem A/B B.2.3 Subsystem PS/VM Figure B.2 – Subsystems of the PDS(SR) |
| 188 | B.3 Example PDS(SR) PFH value determination B.3.1 Subsystem “A/B” (main subsystem) Figure B.3 – Function blocks of subsystem A/B |
| 190 | Table B.1 – Determination of DC factor of subsystem A/B |
| 191 | Figure B.4 – Reliability model (Markov) of subsystem A/B |
| 193 | B.3.2 Subsystem “PS/VM” Figure B.5 – Function blocks of subsystem PS/VM Table B.2 – PFH value calculation results for subsystem A/B |
| 194 | Table B.3 – Determination of DC factor of subsystem A/B |
| 195 | Figure B.6 – Reliability model (Markov) of subsystem PS/VM |
| 196 | B.3.3 PFH value of the safety sub-function STO of PDS(SR) Table B.4 – PFH value calculation results for subsystem PS/VM |
| 197 | B.4 Reduction of DC and SFF depending on test interval |
| 198 | Annex C (informative) Available failure rate databases C.1 Databases C.2 Helpful standards concerning component failure |
| 200 | Annex D (informative) Fault lists and fault exclusions D.1 General D.2 Remarks applicable to fault exclusions D.2.1 Validity of exclusions D.2.2 Tin whisker growth D.2.3 Short-circuits on PWB-mounted parts |
| 201 | D.3 Fault models D.3.1 Conductors/cables D.3.2 Printed wiring boards/assemblies D.3.3 Terminal block Table D.1 – Printed wiring boards/assemblies |
| 202 | D.3.4 Multi-pin connector D.3.5 Electromechanical devices Table D.2 – Terminal block Table D.3 – Multi-pin connector |
| 203 | D.3.6 Transformers D.3.7 Inductances D.3.8 Resistors D.3.9 Resistor Networks D.3.10 Potentiometers D.3.11 Capacitors D.3.12 Discrete semiconductors Table D.4 – Electromechanical devices (for example relay, contactor relays) |
| 204 | D.3.13 Signal Isolation components D.3.14 Non-programmable integrated circuits D.3.15 Programmable and/or complex integrated circuits Table D.5 – Signal Isolation components Table D.6 – Non-programmable integrated circuits |
| 205 | D.3.16 Motion and position feedback sensors Table D.7 – Programmable and/or complex integrated circuits |
| 206 | Table D.8 – Motion and position feedback sensors |
| 209 | Annex E (normative) Electromagnetic (EM) immunity requirement for PDS(SR) E.1 General E.2 Immunity requirements – low frequency disturbances |
| 210 | Table E.1 – Minimum immunity requirements for voltage deviations, dips and short interruptions |
| 211 | Table E.2 – PDS(SR) minimum immunity requirements for voltage deviations, dips and short interruptions on main power ports with a rated voltage above 1 000 V |
| 212 | E.3 Immunity requirements – high frequency disturbances Table E.3 – Immunity requirements – high frequency disturbances |
| 214 | Table E.4 – General frequency ranges for mobile transmitters and ISM for radiated tests |
| 215 | Table E.5 – General frequency ranges for mobile transmitters and ISM for conducted tests |
| 216 | Annex F (informative) Estimation of PFDavg value for low demand with given PFH value F.1 General F.2 Estimation of PFDavg value for low demand with given PFH value |
| 217 | Bibliography |
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BS EN 61800-5-2:2017
Adjustable speed electrical power drive systems – Safety requirements. Functional Published By Publication Date Number…
