1、BSI Standards PublicationIndustrial process control systemsPart 2: Methods of evaluating the performance of intelligent valve positioners with pneumatic outputs mounted on an actuator valve assemblyBS EN 61514-2:2013National forewordThis British Standard is the UK implementation of EN 61514-2:2013.
2、It isidentical to IEC 61514-2:2013. It supersedes BS EN 61514-2:2004, which willbe withdrawn in 1 August 2016.The UK participation in its preparation was entrusted by Technical Com-mittee GEL/65, Measurement and control, to Subcommittee GEL/65/1,System considerations.A list of organizations represen
3、ted on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2013.Published by BSI Standards Limited 2013ISBN 978 0 580 786
4、08 2ICS 23.060.01; 25.040.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2013.Amendments/corrigenda issued since publicationDate Text affectedBRITISH
5、 STANDARDBS EN 61514-2:2013EUROPEAN STANDARD EN 61514-2 NORME EUROPENNE EUROPISCHE NORM September 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenu
6、e Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61514-2:2013 E ICS 23.060; 25.040.40 Supersedes EN 61514-2:2004 English version Industrial process control systems - Part 2: Methods of evaluating
7、 the performance of intelligent valve positioners with pneumatic outputs mounted on an actuator valve assembly (IEC 61514-2:2013) Systmes de commande des processus industriels - Partie 2: Mthodes dvaluation des performances des positionneurs de vanne intelligents sorties pneumatiques monts sur un en
8、semble actionneur/vanne (CEI 61514-2:2013) Systeme der industriellen Prozessleittechnik Teil 2: Verfahren zur Bewertung des Betriebsverhaltens von intelligenten Ventilstellungsreglern mit pneumatischem Ausgang, die an Ventil-Stellantrieben montiert sind (IEC 61514-2:2013) This European Standard was
9、approved by CENELEC on 2013-08-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such
10、national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into i
11、ts own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Mace
12、donia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 61514-2:2013EN 61514-2:2013 - 2 - Foreword The text of docu
13、ment 65B/868/FDIS, future edition 2 of IEC 61514-2, prepared by SC 65B, “Devices test methods for measuring and qualifying their performance under various environmental and operational conditions; methods for reporting the data obtained. When a full evaluation, in accordance with this standard, is n
14、ot required or possible, the tests which are required should be performed and the results should be reported in accordance with the relevant parts of this standard. In such cases, the test report should state that it does not cover the full number of tests specified herein. Furthermore, the items om
15、itted should be mentioned, to give the reader of the report a clear overview. The standard is also applicable for non-intelligent microprocessor-based valve positioners without means for bi-directional communication. In that case an evaluation should be reduced to a limited programme of performance
16、testing and a short review of the construction. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition
17、 of the referenced document (including any amendments) applies. BS EN 61514-2:2013 8 61514-2 IEC:2013 IEC 60050 (all parts), International Electrotechnical Vocabulary (IEV) (available at http:/www.electropedia.org) IEC 60068-2-1:1990, Environmental testing Part 2: Tests. Tests A: Cold IEC 60068-2-2:
18、1974, Environmental testing Part 2: Tests. Tests B: Dry heat IEC 60068-2-6:1995, Environmental testing Part 2: Tests. Test Fc: Vibration (sinusoidal) IEC 60068-2-31:1969, Environmental testing Part 2: Tests. Test Ec: Drop and topple, primarily for equipment-type specimens IEC 60068-2-78:2001, Enviro
19、nmental testing Part 2-78: Tests. Test Cab: Damp heat, steady state IEC 60079 (all parts), Electrical apparatus for explosive gas atmospheres IEC 60529:1989, Degrees of protection provided by enclosures (IP Code) IEC 60534-1, Industrial-process control valves Part 1: Control valve terminology and ge
20、neral considerations IEC 60654 (all parts), Operating conditions for industrial-process measurement and control equipment IEC 60721-3, Classification of environmental conditions Part 3 Classification of groups of environmental parameters and their severities IEC 61000-4-11, Electromagnetic compatibi
21、lity (EMC) Part 4-11: Testing and measurement techniques Voltage dips, short interruptions and voltage variations immunity tests IEC 61010-1:2001, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 1: General requirements IEC 61032:1997, Protection of pers
22、ons and equipment by enclosures Probes for verification IEC 61069 (all parts), Industrial-process measurement and control Evaluation of system properties for the purpose of system assessment IEC 61158 (all parts), Digital data communications for measurement and control Fieldbus for use in industrial
23、 control systems IEC 61298 (all parts), Process measurement and control devices General methods and procedures for evaluating performance IEC 61298-1:2008, Process measurement and control devices General methods and procedures for evaluating performance Part 1: General considerations IEC 61298-2:200
24、8, Process measurement and control devices General methods and procedures for evaluating performance Part 2: Tests under reference conditions IEC 61298-3:2008, Process measurement and control devices General methods and procedures for evaluating performance Part 3: Tests for the effects of influence
25、 quantities BS EN 61514-2:201361514-2 IEC:2013 9 IEC 61298-4:2008, Process measurement and control devices General methods and procedures for evaluating performance Part 4: Evaluation report content IEC 61326-1:2005, Electrical equipment for measurement, control and laboratory use EMC requirements I
26、EC/PAS 61499 (all parts), Function blocks for industrial-process measurement and control systems IEC 61514:2000, Industrial-process control systems Methods of evaluating the performance of valve positioners with pneumatic outputs IEC/TS 62098, Evaluation methods for microprocessor-based instruments
27、CISPR 11, Information technology equipment Radio disturbance characteristics Limits and methods of measurement 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61514:2000 and IEC 60050-351, as well as the following apply. 3.1 intelligent valve positio
28、ner position controller based on microprocessor technology, and utilising digital techniques for data processing, decision-making and bi-directional communication Note 1 to entry: It may be equipped with additional sensors and additional functionality supporting the main function. Note 2 to entry: I
29、n this standard, only positioners with pneumatic output signals are considered, as defined in 3.1 of IEC 61514:2000. The input signal may be an electric current or voltage, or a digital signal via a fieldbus. Note 3 to entry: For non-intelligent microprocessor-based position controllers without bi-d
30、irectional communication an evaluation is reduced to a limited amount of performance testing and an abridged design review of the construction. 3.2 configuring process of implementing the functionality required for a certain application 3.3 configurability extent to which an intelligent positioner c
31、an be provided with functions to control various applications 3.4 calibration process of adjusting the range of travel to the required value for acquiring a defined input-to-travel characteristic Note 1 to entry: The adjusted travel can either be from stop to stop or to a value in between as defined
32、 by the valve manufacturer. Note 2 to entry: Instruments may exist that are provided with an automatic procedure for travel range adjustment, which may then be addressed with the term auto-calibration. 3.5 tuning process of adjusting the various control parameters for a certain application BS EN 615
33、14-2:2013 10 61514-2 IEC:2013 Note 1 to entry: The stem tuning procedure can range from “trial and error“ to an automatic proprietary procedure provided by the manufacturer and often addressed as auto-tuning. 3.6 set-up process of configuring, calibrating and tuning a positioner for optimal controll
34、ing of a specific actuator/valve assembly 3.7 travel cut-off point close to the extreme end (low or high) of the characteristic curve at which the positioner forces the valve to the corresponding mechanical stop (fully closed or fully open) 3.8 stroke time time required to travel between two differe
35、nt positions under a defined set of conditions 3.9 dead band finite range of values within which reversal of the input variable does not produce any noticeable change in the output variable 3.10 operating mode selected method of operation of the positioner 3.11 setpoint input variable, which sets th
36、e desired value of the controlled variable (travel) Note 1 to entry: The input variable may originate from an analogue source (mA or voltage) or from a digital source (fieldbus) or local keyboard). 3.12 balance pressure average of the pressures on the opposite chambers of a double acting actuator in
37、 steady state condition Note 1 to entry: The balance pressure shall be expressed as a percentage of the positioner supply pressure to evaluate the stiffness of the double acting system. 4 Design review 4.1 General The observations of Clause 4 shall be based on open literature (manuals, instruction l
38、eaflets, etc.) provided to a user on delivery of the instruments and whatever the manufacturer is willing to disclose. They shall not contain confidential information. The design review is meant to identify and make explicit the functionality and capabilities of the intelligent valve positioner unde
39、r consideration in a structured way. As intelligent positioners appear in a great variety of designs a review has to show in a structured way the details of their physical structure; their functional structure. Subclause 4.2 guides the evaluator in the process of describing the physical structure of
40、 intelligent positioners through identifying the hardware modules and the I/Os to the operational and environmental domains. BS EN 61514-2:201361514-2 IEC:2013 11 Thereafter the functional structure is described using the checklist of 4.3. The checklist gives a structured framework of the relevant i
41、ssues, which have to be addressed by the evaluator through adequate qualitative and quantitative experiments. 4.2 Positioner identification 4.2.1 Overview The structured identification process, based on the following considerations, leads to a blockscheme and a concise description of the positioner
42、under test, which shall be included in the evaluation report. It may be enhanced with photographs or drawings of important details. The instrument, schematically shown in Figure 1, can have the following main physical modules and provisions for connection to the external world: Data processing unit
43、Sensor/input assembly Power supply unit Communication interface Output subsystem Human interface Current input Feedback from actuator Aux. sensor assembly Pos. output pressure pos. internal temp. Supply voltage E P Supply pressure Output pressure to actuator To external system To human operator Upst
44、ream line pressure Diff. pressure over valve Stuffing box leakage detector mA position output IEC 1305/13 Figure 1 Positioner model in extensive configuration 4.2.2 Power supply unit Instruments that require a separate connection to an a.c. or d.c. supply voltage may exist. However, the majority of
45、instruments are “loop powered“ which means that they receive power either through the current input for instruments that need an analogue (mA) setpoint, or through the fieldbus when the setpoint is a digital signal. 4.2.3 Sensor/input assembly The main sensor/input assembly is that part of the posit
46、ioner to which the analogue setpoint is connected and which also receives the feedback signal from the actuator/valve assembly (stem movement). It supports the primary function of the positioner. Parts of the assembly may be distributed at physically different locations in the positioner. In instrum
47、ents that receive a digital setpoint, the current input as shown in Figure 4 does not exist. The feedback signal is generated by a mechanical interface (linkage) between the positioner and the valve stem. 4.2.4 Auxiliary sensor assembly The auxiliary sensor assembly is for the electronics part integ
48、rated with the main sensor input assembly. Many positioners are equipped with a pressure sensor in the pneumatic output circuit and a temperature sensor inside the electronics housing. Their signals may be used in the stem position control algorithm. For safeguarding and condition monitoring of the
49、valve a BS EN 61514-2:2013 12 61514-2 IEC:2013 positioner may be equipped with additional sensors. It may also be equipped with circuits for digital inputs from switches. 4.2.5 Human interface A positioner can be classified as intelligent only when data produced by the positioner can be communicated to the external world. The human interface is an important tool for communication. It consists of integral means at the instrument for reading out data (local display) and provisio
