1、December 2008DEUTSCHE NORM English price group 14No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.110!$T“1499599www.
2、din.deDDIN EN 574Safety of machinery Two-hand control devices A1:2008)English version of DIN EN 574:2008-12Sicherheit von Maschinen Zweihandschaltungen Funktionelle Aspekte Gestaltungsleitstze (enthlt nderung A1:2008)Englische Fassung DIN EN 574:2008-12SupersedesDIN EN 574:1997-02www.beuth.deDocumen
3、t comprises 33 pagesFunctional aspects Principles for design (includes AmendmentDIN EN 574:2008-12 2 Start of validity This standard takes effect on 1 December 2008. DIN EN 574:1997-02 may be used in parallel until 28 December 2009. National foreword This standard includes safety requirements. This
4、standard has been prepared by Technical Committee CEN/TC 114 “Safety of Machinery” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee) in collaboration with the Normenausschuss Sicherhe
5、its-technische Grundstze (Safety Design Principles Standards Committee). Amendment of the European Machinery Directive has made it necessary to review the previously valid standard, EN 574:1996, in terms of the essential requirements of the new European Machinery Directive, 2006/42/EC. This standard
6、 concretizes the basic requirements set out in Annex I of the EU Machinery Directive 98/37/EC (valid until 28 December 2009) and the new EU Machinery Directive 2006/42/EC which becomes applicable on 29 December 2009 relating to two-hand control devices to be placed on the EEA market, with the intent
7、 of simplifying the means of proving conformity with such requirements. Once this standard is designated a harmonized standard in the Official Journal of the European Union, a manufacturer applying this standard may assume compliance with the requirements of the Machinery Directive (the so-called “p
8、resumption of conformity”). The technical substance of the standard has not been changed. Amendments This standard differs from DIN EN 574:1997-02 as follows: a) integral parts of this document. b) Annex ZA (informative) “Relationship between this European Standard and the Essential Requirements of
9、EU Directive 98/37/EC” has been editorially revised. c) Annex ZB (informative) “Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC” has been added. Previous editions DIN 24980: 1987-08 DIN EN 574: 1997-02 It is stated in the foreword that Annexes ZA
10、 and ZB showing the relationship with EU Directives are now EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 574:1996+A1 June 2008 ICS 13.110 Supersedes EN 574:1996 English Version Safety of machinery - Two-hand control devices - Functional aspects - Principles for design Scurit des machines - D
11、ispositifs de commande bimanuelle - Aspects fonctionnels - Principes de conception Sicherheit von Maschinen - Zweihandschaltungen - Funktionelle Aspekte - Gestaltungsleitstze This European Standard was approved by CEN on 20 November 1996 and includes Amendment 1 approved by CEN on 18 May 2008. CEN m
12、embers 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 national standards may be obtained on applic
13、ation to the CEN Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN Management Centre ha
14、s the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po
15、rtugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any m
16、eans reserved worldwide for CEN national Members. Ref. No. EN 574:1996+A1:2008: EEN 574:1996+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 5 3 Definitions 5 4 Types of two-hand control devices and their selection 7 5 Characteristics of safety functions9 6 Req
17、uirements related to categories of control.10 7 Use of programmable electronic systems 11 8 Prevention of accidental actuation and of defeat.12 9 General requirements14 10 Verification .16 11 Marking .20 12 Information for installation, use and maintenance 21 control devices.28 !Requirements of EU D
18、irective 98/37/EC“.29 !Requirements of EU Directive 2006/42/EC“.30 Bibliography 31 Annex B (informative) Use of categories (according to EN 954-1:1996) in types of two-hand Annex ZB (informative) Relationship between this European Standard and the Essential Annex ZA (informative) Relationship betwee
19、n this European Standard and the Essential Annex A (normative) Measurement tests for the prevention of defeat23 DIN EN 574:2008-12 EN 574:1996+A1:2008 (E) 3 Foreword This document (EN 574:1996+A1:2008) has been prepared by Technical Committee CEN/TC 114 “Safety of machinery”, the Secretariat of whic
20、h is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2008, and conflicting national standards shall be withdrawn at the latest by December 2008. This document includes Amendm
21、ent 1, approved by CEN on 2008-05-18. This document supersedes EN 574:1996. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Associ
22、ation, and supports essential requirements of EU Directive(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.“ This standard is a type B standard in the structure of A-/B-/C-standards as defined in EN 292. Annex A of this standar
23、d is normative, whereas annexes B and C are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fr
24、ance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 574:2008-12 EN 574:1996+A1:2008 (E) 4 Introduction This standard has been prepared
25、to be a type B standard in the sense of the Machinery Directive (89/392/EWG) and associated EFTA regulations. A two-hand control device is a safety device (safety component). It provides a measure of protection for the operator against reaching danger zones during hazardous situations by locating th
26、e control actuating devices in a specific position. For hand held machinery it should be taken into consideration that the danger zone is not stationary. The selection of a two-hand control device as an appropriate safety device will depend upon the risk assessment made by designers, standard makers
27、 and others in accordance with EN 292-1 and EN 1050. The definition of a two-hand control device is given in 3.1 and takes precedence over the definition in 3.23.4 of EN 292-1:1991. In some arrangements enabling devices (see 3.23.2 of EN 292-1:1991) and/or hold-to-run devices (see 3.23.3 of EN 292-1
28、:1991) may comply with the definition of a two-hand control device in this standard. Additionally, some special control devices - such as teach pendants for robots and some crane controls require the use of two hands and can comply with the definition a two-hand control device in this standard. 1 Sc
29、ope This standard specifies the safety requirements of a two-hand control device and its logic unit as defined in 3.1. This standard describes the main characteristics of two-hand control devices for the achievement of safety and sets out combinations of functional characteristics for three types. T
30、his standard does not apply to devices intended to be used as enabling devices, hold to run devices and as special control devices. This standard does not specify with which machines two-hand control devices shall be used. It also does not specify which types of two-hand-control device shall be used
31、. Moreover it does not specify the distance between the two-hand control device and the danger zone (see 9.8). The standard provides requirements and guidance on the design and selection (based on a risk assessment) of two-hand control devices including their assessment, the prevention of defeat and
32、 the avoidance of faults. The standard also provides requirements and guidance for two-hand control devices containing a programmable electronic system (see 7). This standard applies to all two-hand control devices, independent of the energy used, including: Two-hand control devices which are or are
33、 not integral parts of a machine; Two-hand control devices which consist of one or more than one separate elements. DIN EN 574:2008-12 EN 574:1996+A1:2008 (E) 5 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normati
34、ve references are cited at the appropriate places in the text and the publications are listed in this clause. For dated references, subsequent amendments to or revisions of any of these publications only apply to this European Standard when incorporated. For undated references, the latest edition of
35、 the publication applies. EN 292-1:1991, Safety of machinery, basic concepts, general principles for design Part 1: Basic terminology, methodology. EN 292-2:1991/A1:1995, Safety of machinery, basic concepts, general principles for design Part 2: Technical principles and specifications. prEN 894-1:19
36、92, Safety of machinery, ergonomics requirements for the design of displays and control actuators Part 1: Human interactions with displays and control actuators. prEN 894-2:1992, Safety of machinery, ergonomics requirements for the design of displays and control actuators Part 2: Displays. prEN 894-
37、3:1992, Safety of machinery, ergonomics requirements for the design of displays and control actuators Part 3: Control actuators. EN 954-1:1996, Safety of machinery, safety related parts of control systems Part 1: General principles for design. prEN 999:1995, Safety of machinery, the positioning of p
38、rotective equipment in respect of approach speeds of parts of the human body. EN 1050:1996, Safety of machinery, principles for risk assessment EN 60204-1:1992, Safety of machinery, electrical equipment of machines Part 1: General requirements. 3 Definitions For the purposes of this standard, the fo
39、llowing definitions apply: 3.1 two-hand control device a device which requires at least simultaneous actuation by the use of both hands in order to initiate and to maintain, whilst a hazardous condition exists, any operation of a machine thus affording a measure of protection only for the person who
40、 actuates it (see figure 1) DIN EN 574:2008-12 EN 574:1996+A1:2008 (E) 6 Key 1 input signal 2 two-hand control device 3 control actuating device 4 signal converter(s) 5 signal processor(s) 6 output signal 7 logic unit Figure 1 Schematic representation of a two-hand control device 3.2 input signal th
41、e externally actuated signal applied by hand to a control actuating device (see fig. 1) 3.3 control actuating device a component of the two-hand control device which senses an input signal from one hand and transmits it to a signal converter (see fig. 1) 3.4 simultaneous actuation the continuing act
42、uation of both control actuating devices during the same time period, whatever the time lag is between the start of one input signal and the start of the other (see fig. 2) NOTE In the English language the word “concurrent“ and the word “simultaneous“ are often used synonymously (e.g. see clause 9.2
43、.7 of EN 60204-1:1992). 3.5 synchronous actuation a particular case of simultaneous actuation where the time lag between the start of one input signal and the start of the other is less than or equal to 0,5 s (see fig. 3). DIN EN 574:2008-12 EN 574:1996+A1:2008 (E) 7 3.6 signal converter a component
44、 of the two-hand control device which receives an input signal from a control actuating device and which transmits and/or converts this signal into a form acceptable to the signal processor (see fig. 1). 3.7 signal processor a part of the two-hand control device which generates the output signal as
45、a consequence of the two input signals (see fig. 1). 3.8 output signal the signal generated by the two-hand control device to be fed into the machinery to be controlled, and which is based on one pair of input signals (see fig. 1). 3.9 response time the time between the release of a control actuatin
46、g device and the cessation of the output signal (see 9.8) 3.10 mobile two-hand control device a device which can be moved and used in more than one definable position relative to the danger zone of the machine which it controls 4 Types of two-hand control devices and their selection Table 1 defines
47、three types of two-hand control devices. It sets out the functional characteristics and the minimum measures for the safety of each type of two-hand control device in this standard. All two-hand control devices shall comply with EN 292 and the relevant parts of EN 60204-1. DIN EN 574:2008-12 EN 574:
48、1996+A1:2008 (E) 8 Table 1 List of types of two-hand control devices and minimum safety requirements TYPES III REQUIREMENTS CLAUSE I II A B C Use of both hands (simultaneous actuation) 5.1 X X X X X Relationship between input signals and output signal 5.2 X X X X X Cessation of the output signal 5.3
49、 X X X X X Prevention of accidental operation 5.4 X X X X X Prevention of defeat 5.5 X X X X X Reinitiation of the output signal 5.6 *) X X X X Synchronous actuation 5.7 X X X Use of category 1 (EN 954-1:1996) 6.2 X X Use of category 3 (EN 954-1:1996) 6.3 X X Use of category 4 (EN 954-1:1996) 6.4 X *) NOTE for the selection of Type I see 8.6. The selection and the design of the type (see table 1) of two-hand control device will depend on: The hazard(s) present; The assessment of risk; Experience in use of technology; Other fact
