1、BRITISH STANDARD BS EN 60947-5-7:2003 Low-voltage switchgear and controlgear Part 5-7: Control circuit devices and switching elements Requirements for proximity devices with analogue output The European Standard EN 60947-5-7:2003 has the status of a British Standard ICS 29.130.20 BS EN 60947-5-7:200
2、3 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 16 October 2003 BSI 16 October 2003 ISBN 0 580 42739 0 National foreword This British Standard is the official English language version of EN 60947-5-7:2003. It is identical with IEC 60947-5-7
3、:2003. It supersedes BS EN 50319:1999 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee PEL/17, Switchgear, controlgear and HV-LV co-ordination, to Subcommittee PEL/17/2, Low-voltage switchgear and controlgear, which has the responsibility to: A list of
4、 organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references 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 Standard
5、s Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards 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 do
6、es not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European deve
7、lopments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments
8、issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60947-5-7 NORME EUROPENNE EUROPISCHE NORM September 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secret
9、ariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60947-5-7:2003 E ICS 29.130.20 Supersedes EN 50319:1999English version Low-voltage switchgear and controlgear Part 5-7: Control circ
10、uit devices and switching elements - Requirements for proximity devices with analogue output (IEC 60947-5-7:2003) Appareillage basse tension Partie 5-7: Appareils et lments de commutation pour circuits de commande - Prescriptions pour les dtecteurs de proximit sortie analogique (CEI 60947-5-7:2003)
11、Niederspannungsschaltgerte Teil 5-7: Steuergerte und Schaltelemente - Anforderungen an Nherungssensoren mit Analogausgang (IEC 60947-5-7:2003) This European Standard was approved by CENELEC on 2003-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate t
12、he 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 standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exis
13、ts 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 notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national elect
14、rotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 64907-5-7:0230 - - 2 Foreword The text of
15、document 17B/1277/FDIS, future edition 1 of IEC 60947-5-7, prepared by SC 17B, Low- voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60947-5-7 on 2003-09-01. This standard should be used in
16、conjunction with EN 60947-5-2:1998. This European Standard supersedes EN 50319:1999. 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 (dop) 2004-06-01 latest date by which the nation
17、al standards conflicting with the EN have to be withdrawn (dow) 2006-09-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annex G is informative. Annex ZA has been added
18、 by CENELEC. _ Endorsement notice The text of the International Standard IEC 60947-5-7:2003 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60381-1 NOTE Harmonize
19、d as HD 452.1 S1:1984 (not modified). IEC 60770-1 NOTE Harmonized as EN 60770-1:1999 (not modified). _ Page2 EN6094757:2003CONTENTS INTRODUCTION.4 1 General5 1.1 Scope and object.5 1.2 Normative references5 2 Definitions5 2.1 Basic definitions 5 2.3 Operation of a proximity device .6 2.4 Output elem
20、ent characteristics 6 3 Classification7 3.7 Classification according to analogue output.7 4 Characteristics.7 4.3 Rated and limiting values for the proximity device and output elements.7 5 Product information 8 7 Constructional and performance requirements8 8 Tests9 8.6 Verification of the electroma
21、gnetic compatibility 10 Annex G (informative) Example of the determination of the conformity of an ultrasonic sensor, nominal sensing distance 60 500 mm with linear output characteristic .11 Annex ZA (normative) Normative references to international publications with their corresponding European pub
22、lications .15 Bibliography16 Figure G.1 Error curve plots.14 Table 9 Range of analogue voltage signals7 Table 10 Range of analogue current signals 8 Table G.1 Error tabulation for travel 111 Table G.2 Error tabulation for travel 212 Table G.3 Error tabulation for travel 312 Table G.4 Computation of
23、the errors 13 Page3 EN6094757:2003INTRODUCTION This part of IEC 60947 modifies the relevant requirements of IEC 60947-5-2, dealing with the requirements for proximity switches with semiconductor switching elements, to make them applicable to proximity devices with analogue output. Page4 EN6094757:20
24、03LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 5-7: Control circuit devices and switching elements Requirements for proximity devices with analogue output 1 General 1.1 Scope and object This part of IEC 60947 states the requirements for proximity devices with analogue output. They may consist of one
25、or more parts. The requirements of IEC 60947-5-2 (proximity switches) apply with the additions or modifications as stated in this standard. The clause numbering in this standard follows the clause numbering of IEC 60947-5-2, modified where necessary. 1.2 Normative references The following referenced
26、 documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60947-5-2:1997, Low-voltage switchgear and controlgear Part 5-2: Cont
27、rol circuit devices and switching elements Proximity switches Amendment 1 (1999) 2 Definitions 2.1 Basic definitions 2.1.2 proximity device with analogue output device producing an output signal which varies continuously depending on the distance between the sensing face of the proximity device and
28、its target object 2.1.3 lower distance minimum stated distance above which the output signal varies continuously 2.1.4 upper distance maximum stated distance below which the output signal varies continuously 2.1.5 distance range range of distances between and including the lower and upper distances
29、Page5 EN6094757:20032.3 Operation of a proximity device 2.3.7 distance/output characteristic of the proximity device relationship of the output signal (current or voltage value) in the steady state to the distance between the sensing face of the proximity device and its target object 2.3.8 conformit
30、y maximum deviation including the manufacturing tolerances between the nominal distance/output characteristic curve and the measured value of five defined distances 2.3.9 repeatability value of variation of the output signal under specified conditions expressed as a percentage of the upper limit 2.3
31、.10 upscale error arithmetic mean of the errors at each value of each measurement cycle with increasing distance 2.3.11 downscale error arithmetic mean of the errors at each value of each measurement cycle with decreasing distance 2.3.12 average error arithmetic mean of all upscale and downscale rea
32、dings at each distance value 2.4 Output element characteristics NOTE Analogue proximity devices are not necessarily linear devices. 2.4.8 analogue current signal current signal which varies in a continuous manner within its range 2.4.9 analogue voltage signal voltage signal which varies in a continu
33、ous manner within its range 2.4.10 range of an analogue signal all values of the signal between and including defined limits 2.4.11 lower limit specified minimum value of the range NOTE The lower limit may be either zero or a finite value; when zero is used, this is called “true zero”; when a finite
34、 value is used, this is called “live zero”. 2.4.12 upper limit specified maximum value of the range Page6 EN6094757:20032.4.13 load impedance impedance or impedances for which the output characteristics of the proximity device are specified 2.4.14 ripple content ratio between the peak-to-peak value
35、of the a.c. component and the upper limit of the signal value 2.4.15 recovery time time taken, following the removal of an external influence for the output signal to return to its previous value within the limits of repeatability as defined in 2.3.9 3 Classification Classification shall be in accor
36、dance with Table 1 of IEC 60947-5-2, with the following addition. 3.7 Classification according to analogue output A proximity device with analogue output shall be designated by a capital A placed in the fifth position. If other outputs also exist, they shall be designated by a second digit in accord
37、ance with Table 1, fifth position. 4 Characteristics Characteristics shall be in accordance with Clause 4 of IEC 60947-5-2 with the following additions. 4.3 Rated and limiting values for the proximity device and output elements 4.3.1 Voltages 4.3.1.5 Range of analogue voltage signals The range of an
38、alogue voltage signals shall be one of the ranges given in Table 9. Table 9 Range of analogue voltage signals Lower limit V Upper limit V +1 +5 0 +10 4.3.1.6 Ripple content of the output voltage The maximum ripple content shall be stated by the manufacturer. Page7 EN6094757:20034.3.2 Currents 4.3.2.
39、1 Range of analogue current signals The range of analogue current signals shall be one of the ranges given in Table 10. Table 10 Range of analogue current signals Lower limit mA Upper limit mA 0 20 4 20 4.3.2.2 Ripple content of the output current The maximum ripple content shall be stated by the ma
40、nufacturer. 4.3.7 Conformity The conformity shall be within 10 % of the upper limit (see 2.3.8). 5 Product information 5.1.1 Identification Subclause 5.1.1 of IEC 60947-5-2 applies with the following additions: aa) Output type and range (voltage or current). bb) Distance range. cc) Ripple content. d
41、d) Distance/output characteristic. ee) Recovery time. 7 Constructional and performance requirements 7.2.1.4 Repeat accuracy Subclause 7.2.1.4 of IEC 60947-5-2 applies with the following modification. It shall be measured at the lower distance, at the upper distance and at the median value of the dis
42、tance range, and shall not exceed 5 %. 7.2.1.16 Upper limit of the output signal The output signal of an analogue proximity device shall not decrease when the target is moved beyond the maximum distance stated by the manufacturer. NOTE This requirement is intended to ensure that there cannot be two
43、or more distances corresponding to the same output signal. Page8 EN6094757:20038 Tests 8.4.1.6 Conformity 8.4.1.6.1 Method of measurement A proximity device in new condition is mounted in accordance with the manufacturers instructions and the target is moved towards and away from the sensing face of
44、 the proximity device in an axial direction. The test points to determine the performance characteristics of a device shall be equidistant over the distance range. At least five points are necessary. The output values for each given distance shall be recorded for at least three full distance travers
45、es in each axial direction of movement of the target. An example is given in Annex G. 8.4.1.6.2 Error tabulation The difference between each recorded output value and its corresponding nominal output value shall be determined. These differences are the errors and shall be expressed as a percentage o
46、f the upper distance. A positive error denotes that the observed output value is greater than the nominal output value. The following shall be calculated: a) average upscale error arithmetic mean of the errors at each value of each measurement cycle with increasing distance; b) average downscale err
47、or arithmetic mean of the errors at each value of each measurement cycle with decreasing distance; c) average error arithmetic mean of all upscale and downscale readings at each distance value. When the distance/output characteristic is adjustable, then the manufacturer shall state the characteristi
48、c used to measure the conformity. 8.4.1.6.3 Error curves The following error curves shall be plotted against percentage of upper distance: average upscale error; average downscale error; average error. 8.4.1.6.4 Maximum error The maximum value (positive or negative) of error determined from the curv
49、e of average upscale error or the curve of average downscale error shall be stated as the maximum error. Page9 EN6094757:20038.4.1.6.5 Determination of conformity Conformity shall be determined either by calculation or as follows. The stated output characteristic shall be drawn so that it coincides with the average error curve at the upper and the lower distance range values. Conformity is the maximu
