1、BRITISH STAND- Industrial-process control systems Methods of evaluating the performance of valve po sitioners with pneumatic outputs The European Standard EN 61514:2002 has the status ofa British Standard ICs 23.060: 25.040.40 BS EN 6 15 14:2002 WkN present to the responsible international/European
2、committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on request to its secretary. F
3、rom 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period oftime during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cros s-r e fer
4、enc es The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled ?International Standards Correspondence Index?, or by using the ?Search?faci1ity ofthe BSI Electronic Catalogue or ofBritish S
5、tan dards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front
6、cover, an inside front cover, the EN title page, pages 2 to 45 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd.No. I Date I Comments O BSI 13 June 2002 ISBN O 580 39789 O EUROPEAN STANDARD EN 615
7、14 NORME EUROPENNE EUROPISCHE NORM April 2002 ICs 23.060;25.040.40 English version Industrial-process control systems - Methods of evaluating the performance of valve positioners with pneumatic outputs (IEC 61514:2000, modified) Systmes de commande des processus industriels - Mthodes dvaluation des
8、performances des positionneurs de vannes sorties pneumatiques (CE1 61514:2000, modifie) Systeme der industriellen Prozesstechnik - Methoden der Beurteilung des Betriebsverhaltens von Ventilstellungsreglern mit pneumatischen Ausgngen (IEC 61514:2000, modifiziert) This European Standard was approved b
9、y CENELEC on 2001-12-01. CENELEC members are bound to comply with the CENKENELEC 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 national st
10、andards may be obtained on application to the Central Secretariat 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 its own language and n
11、otified to the Central Secretariat has the same status as the oficial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spai
12、n, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels O 2002 CENELEC - All rights of exploi
13、tation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61514:2002 E Page 2 EN 61514:2002 Foreword The text of the International Standard IEC 61514:2000, prepared by SC 65B, Devices, of IEC TC 65, Industrial-process measurement and control, together with the common mo
14、difications prepared by SR 65B, was submitted to the formal vote and was approved by CENELEC as EN 61514 on 2001-12-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement - latest da
15、te by which the national standards conflicting with the EN have to be withdrawn (dop) 2002-12-01 (dow) 2004-12-01 Endorse ment not ice The text of the International Standard IEC 61514:2000 was approved by CENELEC as a European Standard with agreed common modifications. O BSI 13 June 2002 Page 3 EN 6
16、1514:2002 CONTENTS Page Clause Scope and object . Definitions General conditions for tests 4.1 Environmental test conditions . . 5 6 4.2 Supply conditions . . IO 4.2.1 Reference values . IO 4.2.2 Tolerances . . II II II General testing procedures 5.2 Test methods 5.3 Testing precautions. 5.4.2 Posit
17、ioner tested in conjunction with an actuator . 13 5.5 Initial setting-up . 14 Positioner tested independently of an actuator 14 5.5.2 Positioner tested in conjunction with an actuator 14 5.5.1 . 14 Test procedures . 6.1 6.2 6.3 6.4 6.5 Gain characteristic 6.1 .I Positioner tested independently of an
18、 actuator 6.1.2 Positioner tested in conjunction with an actuator . Travel characteristic . . 6.2.1 Positioner tested independently of an actuator 16 6.2.2 Positioner tested in conjunction with an actuator . 16 Accuracy related terms . . 16 6.3.1 Inaccuracy . 16 6.3.2 Measured error 17 6.3.4 Hystere
19、sis . 6.3.3 Conformity e 6.3.5 Repeatability Dead band 6.4.1 Dead band - Input path 6.4.2 Dead band - Travel path . . I9 Airflow data . . 20 6.5.1 Airflow characteristic . 20 6.5.2 Steady-state air consumption 22 O BSI 13 June 2002 Page 4 EN 61514:2002 Clause Page 6.6 Effects of influence quantities
20、 23 6.6.1 Supply pressure 6.6.3 Relative humidity 6.6.4 Mounting position . 6.6.6 Vibration . . 27 6.6.7 Power-frequency magnetic field . 28 6.6.8 Radiated electromagnetic field inter 29 6.6.9 Electrical fast transients (burst) . 29 6.6.5 Mechanical shock . 6.6.1 O 6.6.1 1 Series mode interference .
21、 Surge voltage immunity . 6.7 Input over-range 30 with an actuator . 32 . 32 6.8.2 Long-term drift . 33 6.9 Accelerated life test . 34 6.9.1 6.9.2 Positioner tested independently of an actuator Positioner tested in conjunction with an actuator . of an actuator 6.1 O Dynamic response 6.10.1 General c
22、onsiderations. 6.1 0.2 Basic test arrangement . . 35 6.1 0.3 Frequency response . . 36 6.1 0.4 Step response 7 Other considerations 7.1 General. 7.2 Safety . 37 39 39 7.4 Documentary information 7.5 Installation 7.6 Routine maintenance and adjustment . 40 7.7 Repair 40 7.8 Protective finishes 40 7.1
23、0 Variants. 40 40 Annex ZA (normative) Normative references to international publications with their corresponding European publications O BSI 13 June 2002 Page 5 EN 61514:2002 INDUSTRIAL-PROCESS CONTROL SYSTEMS - Methods of evaluating the performance of valve positioners with pneumatic outputs 1 Sc
24、ope and object D This European Standard specifies tests designed to determine the static and dynamic performance of single-acting or double-acting analoque positioners. The tests may be applied to positioners, which receive standard analogue input signals (as specified in IEC 60381 and IEC 60382) an
25、d have a pneumatic output. Positioners with pulsed or digital input signals, positioners with digital controllers and positioners with pulsed outputs are outside the scope of this standard. Cl Testing may be conducted either on a positioner alone, independently of an actuator, or on a positioner mou
26、nted and connected to a specific actuator, as a combined unit. The text makes clear where different approaches are required. The methods of evaluation given in this standard are intended for use by manufacturers to determine the performance of their products, and by users, or independent testing est
27、ablish- ments, to verify manufacturers performance specifications. The closest liaison should be maintained between the evaluating body and the manufacturer. Note should be taken of the manufacturers specifications for the instrument when the test programme is being decided, and the manufacturer sho
28、uld be invited to comment on both the test programme and the results. His comments on the results should be included in any report produced by the testing organization. This standard is intended to provide definitions of positioner elements, actions, and characteristics, to specify uniform methods o
29、f measuring performance errors and effects of influence quantities on those characteristics, and to describe methods of reporting and evaluating the results of the measurement data obtained. The test conditions described in this publication (for example range of ambient temperatures and power supply
30、) relate to conditions which commonly arise in use. Consequently, the values specified shall be used where no other values are specified by the manufacturer or user. If other values are used, they should be stated. It is recognized that the manufacturers specifications and instructions for installat
31、ion and operation should apply during all steps. The tests specified in this standard are not necessarily sufficient for instruments specifically designed for unusually arduous conditions. Conversely, a reduced series of tests may serve adequately for instruments designed to perform within a more li
32、mited range of conditions. When a full evaluation, in accordance with this standard, is not required or possible, those tests which are required should be performed and the results reported in accordance with the relevant parts of this standard. In such cases, the test report should state that it do
33、es not cover the full number of tests specified herein. O BSI 13 June 2002 Page 6 EN 61514:2002 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of IEC 61 514. For dated references, subsequent amendments to, or r
34、evisions of, any of these publications do not apply. However, parties to agreements based on IEC 61514 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document r
35、eferred to applies. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 60050(161):1990, Infernafional Elecfrofechnical Vocabulary (IEV) - Chapfer 161: Elecfro- magnefic compafibilify IEC 60068-2-1 :1990, Environmenfal fesfing - Parf 2: Tesfs. Tesf A: Cold IEC 6
36、0068-2-2:1974, Environmenfal fesfing - Parf 2: Tesfs. Tesf 6: Dry heaf IEC 60068-2-6:1995, Environmenfal fesfing - Parf 2: Tesfs. Tesf Fc: Vibrafion (sinusoidal) IEC 60068-2-31:1969, Environmenfal fesfing - Parf 2: Tesfs. Tesf Ec: Drop and fopple, primarily for equipmenf-fype specimens IEC 60068-2-5
37、6:1988, Environmenfal fesfing - Parf 2: Tesfs. Tesf Cb: Damp heaf, sfeady sfafe, primarily for equipmenf IEC 60381-1:1982, Analogue signals for process confrol sysfems - Parf 1: Direcf currenf signals IEC 60382:1991, Analogue pneumafic signal for process confrol sysfems IEC 60529:1989, Degree of pro
38、fecfion provided by enclosures (IP Code) I EC 60902: 1987, Indusfrial-process measuremenf and confrol- Terms and definifions IEC 61 000-4-3:1995, Elecfromagnefic compafibilify (EMC) - Parf 4: Tesfing and measuremenf fechniques - Secfion 3: Radiafed, radio-frequency elecfromagnefic field immunify fes
39、f IEC 61 000-4-4:1995, Elecfromagnefic compafibilify (EMC) - Parf 4: Tesfing and measuremenf fechniques - Secfion 4: Elecfrical fasf fransienflbursf immunify fesf IEC 61 000-4-5:1995, Elecfromagnefic compafibilify (EMC) - Parf 4: Tesfing and measuremenf fechniques - Secfion 5: Surge immunify fesf IE
40、C 61 000-4-8:1993, Elecfromagnefic compafibilify (EMC) - Parf 4: Tesfing and measuremenf fechniques - Secfion 8: Power frequency magnefic field immunify fesf IEC 6101 0-1 :I 990, Safefy requiremenfs for elecfrical equipmenf for measuremenf, confrol, and laborafory use - Parf 1: General requiremenfs
41、IEC 61 032:1997, Profecfion of persons and equipmenf by enclosures - Probes for verificafion IEC 61 187:1993, Elecfrical and elecfronic measuring equipmenf - Documenfafion IEC 61 298-4:1995, Process measuremenf and confrol devices - General mefhods and procedures for evaluafing performance - Parf 4:
42、 Evaluafion reporf confenf O BSI 13 June 2002 Page 7 EN 61514:2002 3 Definitions For the purpose of this standard, the definitions given in IEC 60902 and IEC 60050(161) shall be applied, in addition to the following definitions. 3.1 positioner position controller connected to the moving part of a fi
43、nal control element or its actuator; automatically adjusts its output signal Y to the actuator in order to maintain a desired travel signal X that bears a predetermined relationship to the input signal W NOTE In this standard, only positioners with pneumatic output signals Y are considered. The inpu
44、t signal W may be an air pressure (pneumatic positioner), or an electric current or voltage (electro-pneumatic positioner), or a pulse or digital signal. 3.1.1 si ngl e-acting posi tioner positioner (see figure la) having one output signal Y which acts on one side of the actuator The returning force
45、 for the actuator is usually provided by springs 3.1.2 dou bl e-act i ng pos it i oner positioner (see figure 1 b) providing two output signals YD and YR connected to opposite sides of the actuator diaphragm or piston IEC 34012000 Figure la - Single-acting positionerlactuator IEC 34112000 Figure 1 b
46、 - Double-acting positionerlactuator Actuator I Figure 1 - Single- and double-acting positioner/actuator O BSI 13 June 2002 Page 8 EN 61514:2002 3.2 input signal W reference input signal which represents the desired position of the associated control element 3.3 travel signal X signal which results
47、from the linear or angular travel caused by movement of the final control element or its actuator 3.4 output signal Y air pressure delivered to the actuator of the final control element 3.5 supply pressure P, air pressure at the supply connector of the positioner 3.6 action action is direct when the
48、 output signal Y increases as the value of the input signal W increases. The action is reverse when the output signal Y decreases as the value of the input signal W increases 3.7 split ranging special adjustment in which the full travel of the actuator is achieved from only part of the whole input r
49、ange (for example O % to 50 % or 50 % to 100 %) 3.8 gai n characteristic relationship between input signal Wand output signal Y with travel signal X kept constant (.e. locked stem); see figure 2 Incremental gain AYIAW varies with pressure and the related pressure shall be stated. 3.9 proportional (average) gain factor K, gain over the full range of the actuator. The proportional gain factor for a single-acting positioner may be derived from the gain characteristic (figure 2a): yrnax Wrnax Kp = where AWrnax is the change of input signal W as a percentage of span
