SIST EN ISO 13856-2:2013

Safety of machinery - Pressure-sensitive protective devices - Part 2: General principles for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO 13856-2:2013)

This part of ISO 13856 establishes general principles and specifies requirements for the design and testing of pressure-sensitive edges and pressure-sensitive bars used as safeguards and not as actuating devices for normal operation. This part of ISO 13856 is applicable to pressure-sensitive edges and pressure-sensitive bars, with or without an external reset facility, used to detect persons or body parts that can be exposed to hazards such as those caused by the moving parts of machines. It is not applicable to - determining the suitability of a pressure-sensitive edge or pressure-sensitive bar for a particular safeguarding application, - selection of an appropriate performance level for safety-related parts of control systems (SRP/CSs) other than to give minimum values, - dimensioning or configuring of the effective sensing area of pressure-sensitive edges or pressuresensitive bars in relation to any particular application, - stopping devices according to IEC 60204-1 used only for normal operation, including emergency stopping of machinery. Requirements for the information to be provided by the manufacturer are given to assist in the selection of a suitable pressure-sensitive edge or pressure-sensitive bar and its application. Additional requirements can be necessary where pressure-sensitive edges or pressure-sensitive bars are used in locations accessible to elderly or disabled people or children.

Sicherheit von Maschinen - Druckempfindliche Schutzeinrichtungen - Teil 2: Allgemeine Leitsätze für die Gestaltung und Prüfung von Schaltleisten und Schaltstangen (ISO 13856-2:2013)

Dieser Teil von ISO 13856 stellt allgemeine Leitsätze auf und legt Anforderungen an die Gestaltung und Prüfung von Schaltleisten und Schaltstangen fest, die als Schutzeinrichtungen und nicht als Betätigungseinrichtungen für den Normalbetrieb eingesetzt werden.
Dieser Teil von ISO 13856 gilt für Schaltleisten und Schaltstangen mit oder ohne Rückstelleinrichtung, die verwendet werden, um Personen bzw. deren Körperteile zu erkennen, die Gefährdungen ausgesetzt sein können, wie jenen die durch sich bewegende Teile von Maschinen bedingt sind.
Das Dokument gilt nicht,
-  um die Eignung einer Schaltleiste bzw. Schaltstange für eine bestimmte Anwendung technischer Schutzmaßnahmen festzustellen;
-  um neben der Angabe von Mindestwerten einen entsprechenden Performance Level für sicherheitsbezogene Teile von Steuerungen (SRP/CSs) auszuwählen;
-  für die Maße bzw. die Anordnungsform der wirksamen Betätigungsfläche von Schaltleisten bzw. Schaltstangen im Hinblick auf eine bestimmte Anwendung;
-  für Stoppeinrichtungen ("Einrichtungen zum Stillsetzen") nach IEC 60204-1, die nur für den Normalbetrieb, einschließlich Not-Halt, von Maschinen verwendet werden.
Anforderungen an die "Informationen", die vom Hersteller zur Verfügung gestellt werden müssen, werden aufgeführt, um die Auswahl einer geeigneten Schaltleiste bzw. Schaltstange und deren Einsatz zu unterstützen.
Zusätzliche Anforderungen können dort erforderlich sein, wo Schaltleisten bzw. Schaltstangen an Orten zum Einsatz kommen, die für alte oder behinderte Menschen oder Kinder zugänglich sind.

Sécurité des machines - Dispositifs de protection sensibles à la pression - Partie 2: Principes généraux de conception et d'essai des bords et barres sensibles à la pression (ISO 13856-2:2013)

L'ISO 13856-2:2013 établit les principes généraux et spécifie les exigences relatives à la conception et aux essais des bords et barres sensibles à la pression utilisés comme des moyens de protection et non comme des dispositifs d'actionnement pour le fonctionnement normal.
L'ISO 13856-2:2013 est applicable aux bords et barres sensibles à la pression, avec ou sans dispositif de réarmement externe, utilisés pour détecter des personnes ou des parties de corps de personnes qui sont exposées à des dangers tels que ceux causés par des éléments mobiles de machines.
L'ISO 13856-2:2013 n'est pas applicable:
à la détermination de l'aptitude d'un bord sensible à la pression ou d'une barre sensible à la pression à protéger pour une application de protection particulière;
au choix d'un niveau de performance (PL) approprié pour les parties des systèmes de commande relatives à la sécurité (SRP/CS) sauf à fournir des valeurs minimales;
aux dimensions ou à la configuration de la zone sensible effective des bords ou barres sensibles à la pression pour une application particulière;
aux dispositifs d'arrêt conformes à la CEI 60204-1 utilisés uniquement pour le fonctionnement normal des machines, y compris l'arrêt d'urgence.
Les exigences relatives aux informations à fournir par le fabricant sont données comme aide au choix d'un bord ou d'une barre sensible approprié(e) et adapté(e) à son application.
Des exigences supplémentaires peuvent être nécessaires lorsque les bords ou barres sensibles à la pression sont utilisés à des emplacements accessibles aux personnes âgées ou handicapées ou aux enfants.

Varnost strojev - Varovalne naprave, občutljive na tlak - 2. del: Splošna načela načrtovanja in preskušanja robov in letev, občutljivih na tlak (ISO 13856-2:2013)

Ta del standarda ISO 13856 vzpostavlja splošna načela in določa zahteve za načrtovanje in preskušanje robov in letev, občutljivih na tlak, ki se uporabljajo kot varovala in ne kot aktivacijske naprave za normalno delovanje. Ta del standarda ISO 13856 se uporablja za robove in letve, občutljive na tlak, z zunanjo funkcijo ponastavitve ali brez nje, ki se uporabljajo za zaznavanje oseb ali delov telesa, ki so lahko izpostavljeni nevarnostim, npr. zaradi gibljivih delov strojev. Ne uporablja se za – ugotavljanje primernosti roba ali letve, občutljive na tlak, za posamezno vrsto uporabe za varovanje, – izbiro ustrezne ravni učinkovitosti varnostnih delov nadzornih sistemov (SRP/CS), razen določanja minimalnih vrednosti, – dimenzioniranje ali konfiguriranje efektivnega območja zaznavanja robov in letev, občutljivih na tlak, v zvezi s posamezno vrsto uporabe, – naprave za zaustavljanje iz standarda IEC 60204-1, ki se uporabljajo samo za normalno delovanje, vključno z zaustavitvijo strojev v sili. Zahteve za informacije, ki jih mora priskrbeti proizvajalec, so podane kot pomoč pri izbiri ustreznega roba ali letve, občutljive na tlak, in njune uporabe. Dodatne zahteve so lahko potrebne, če se robovi ali letve, občutljivi na tlak, uporabljajo na mestih, do katerih imajo dostop ostareli, invalidi ali otroci.

General Information

• Status: Published
• Public Enquiry End Date: 19-Jan-2012
• Publication Date: 20-Oct-2013
• ICS: 13.110 - Safety of machinery
• Technical Committee: VSN - Safety of machinery
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Oct-2013
• Due Date: 23-Dec-2013
• Completion Date: 21-Oct-2013
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Ref Project: EN ISO 13856-2:2013 - Safety of machinery - Pressure-sensitive protective devices - Part 2: General principles for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO 13856-2:2013)

Relations

• Replaces: SIST EN 1760-2:2002+A1:2009 - Safety of machinery - Pressure sensitive protective devices - Part 2: General principles for the design and testing of pressure sensitive edges and pressure sensitive bars
• Effective Date: 01-Nov-2013

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 13856-2:2013
01-november-2013
1DGRPHãþD
SIST EN 1760-2:2002+A1:2009
9DUQRVWVWURMHY9DURYDOQHQDSUDYHREþXWOMLYHQDWODNGHO6SORãQDQDþHOD
QDþUWRYDQMDLQSUHVNXãDQMDURERYLQOHWHYREþXWOMLYLKQDWODN,62
Safety of machinery - Pressure-sensitive protective devices - Part 2: General principles
for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO
13856-2:2013)
Sicherheit von Maschinen - Druckempfindliche Schutzeinrichtungen - Teil 2: Allgemeine
Leitsätze für die Gestaltung und Prüfung von Schaltleisten und Schaltstangen (ISO
13856-2:2013)
Sécurité des machines - Dispositifs de protection sensibles à la pression - Partie 2:
Principes généraux de conception et d'essai des bords et barres sensibles à la pression
(ISO 13856-2:2013)
Ta slovenski standard je istoveten z: EN ISO 13856-2:2013
ICS:
13.110 Varnost strojev Safety of machinery
SIST EN ISO 13856-2:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 13856-2:2013

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SIST EN ISO 13856-2:2013


EUROPEAN STANDARD
EN ISO 13856-2

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2013
ICS 13.110 Supersedes EN 1760-2:2001+A1:2009
English Version
Safety of machinery - Pressure-sensitive protective devices -
Part 2: General principles for design and testing of pressure-
sensitive edges and pressure-sensitive bars (ISO 13856-2:2013)
Sécurité des machines - Dispositifs de protection sensibles Sicherheit von Maschinen - Druckempfindliche
à la pression - Partie 2: Principes généraux de conception Schutzeinrichtungen - Teil 2: Allgemeine Leitsätze für die
et d'essai des bords et barres sensibles à la pression (ISO Gestaltung und Prüfung von Schaltleisten und
13856-2:2013) Schaltstangen (ISO 13856-2:2013)
This European Standard was approved by CEN on 1 March 2013.

CEN 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 national
standards may be obtained on application to the CEN-CENELEC 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-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13856-2:2013: E
worldwide for CEN national Members.

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SIST EN ISO 13856-2:2013
EN ISO 13856-2:2013 (E)
Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .4

2

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SIST EN ISO 13856-2:2013
EN ISO 13856-2:2013 (E)
Foreword
This document (EN ISO 13856-2:2013) has been prepared by Technical Committee ISO/TC 199 "Safety of
machinery" in collaboration with Technical Committee CEN/TC 114 “Safety of machinery” the secretariat of
which 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 October 2013, and conflicting national standards shall be withdrawn at
the latest by October 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1760-2:2001+A1:2009.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
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, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 13856-2:2013 has been approved by CEN as EN ISO 13856-2:2013 without any modification.
3

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SIST EN ISO 13856-2:2013
EN ISO 13856-2:2013 (E)
Annex ZA
(informative)

Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive Machinery 2006/42/EC.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of
conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Directive 2006/42/EC
Clause(s)/sub-clause(s) of this Essential Requirements (ERs)
Qualifying remarks/Notes
European Standard of Directive 2006/42/EC
Clause 4 Annex I, 1.2 Control systems
Annex I, 1.3 Protection against mechanical
hazards
Annex I, 1.4 Required characteristics of
(guards and) protection devices
Annex I, 1.5 Risks due to other hazards
Annex I, 1.6 Maintenance
Clauses 5 and 6 Annex I, 1.7 Information

WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within
the scope of this standard.

4

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SIST EN ISO 13856-2:2013
INTERNATIONAL ISO
STANDARD 13856-2
Second edition
2013-04-15
Safety of machinery — Pressure-
sensitive protective devices —
Part 2:
General principles for design and
testing of pressure-sensitive edges
and pressure-sensitive bars
Sécurité des machines — Dispositifs de protection sensibles à la
pression —
Partie 2: Principes généraux de conception et d’essai des bords et
barres sensibles à la pression
Reference number
ISO 13856-2:2013(E)
©
ISO 2013

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SIST EN ISO 13856-2:2013
ISO 13856-2:2013(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved

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SIST EN ISO 13856-2:2013
ISO 13856-2:2013(E)

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements for design and testing . 7
4.1 Effective sensing surface . 7
4.2 Actuating force for testing . 9
4.3 Pre-travel .10
4.4 Working travel .10
4.5 Overtravel .10
4.6 Force .
travel relationships .10
4.7 Minimum operating speed .12
4.8 Number of operations .12
4.9 Sensor output .13
4.10 Response of output signal switching device to actuating force .13
4.11 Reset function .13
4.12 Environmental conditions .14
4.13 Power supply variations .15
4.14 Electrical equipment .15
4.15 Hydraulic equipment .16
4.16 Pneumatic equipment .16
4.17 Enclosure .16
4.18 Additional coverings for sensors .17
4.19 Access .17
4.20 Performance levels and categories for SRP/CSs in accordance with ISO 13849-1 .17
4.21 Adjustments .18
4.22 Sensor fixing and mechanical strength .18
4.23 Recovery after deformation .18
4.24 Connections .19
4.25 Sharp corners, sharp edges and rough surfaces .19
4.26 Mechanical features .19
4.27 Inhibition and blocking.19
5 Marking .19
6 Information for selection and use .20
6.1 General .20
6.2 Essential data for the selection of suitable pressure-sensitive edge or
pressure-sensitive bar .20
6.3 Information for use .21
7 Verification of requirements .23
7.1 General .23
7.2 Test samples .24
7.3 Test pieces .24
7.4 Test No. 1 — Safety-related data for selection, installation, commissioning, operation and
maintenance of suitable pressure-sensitive edges or pressure-sensitive bars .25
7.5 Test No. 2 — Mounting orientations of sensors .25
7.6 Test No. 3 — Actuating force .26
7.7 Test No. 4 — Force.
travel relationship(s) .32
7.8 Test No. 5 — Number of operations .32
7.9 Test No. 6 — Output state of sensor and output signal switching device .33
© ISO 2013 – All rights reserved iii

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SIST EN ISO 13856-2:2013
ISO 13856-2:2013(E)

7.10 Test No. 7 — Response of output signal switching device to actuating force, reset and
state of power supply .33
7.11 Test No. 8 — Environmental conditions .33
7.12 Test No. 9 — Power supply variation .35
7.13 Test No. 10 — Electrical, hydraulic and pneumatic equipment.36
7.14 Test No. 11 — Enclosure .36
7.15 Test No. 12 — Additional coverings for sensors .36
7.16 Test No. 13 — Access .36
7.17 Test No. 14 — Performance Level (PL) according to ISO 13849-1 .36
7.18 Test No. 15 — Adjustments .37
7.19 Test No. 16 — Sensor fixing and mechanical strength .37
7.20 Test No. 17 — Recovery after deformation .37
7.21 Test No. 18 — Connections .37
7.22 Test No. 19 — Sharp corners, sharp edges and rough surfaces .37
7.23 Test No. 20 — Mechanical features .37
7.24 Test No. 21 — Inhibition and blocking .38
7.25 Test No. 22 — Marking .38
7.26 Test No. 23 — Information for selection and use .38
Annex A (normative) Timing diagrams for pressure-sensitive edges/bars with/without reset.39
Annex B (informative) Operating speed, force and travel — Explanatory remarks
and recommendations .43
Annex C (informative) Device selection guidance for machinery manufacturer/user .46
Annex D (informative) Design guidance .48
Annex E (informative) Application guidance .51
Annex F (informative) Guidance on commissioning and testing after installation .52
Annex G (informative) General considerations for systems meeting ISO 13849-1, category 2 .54
Bibliography .55
iv © ISO 2013 – All rights reserved

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SIST EN ISO 13856-2:2013
ISO 13856-2:2013(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13856-2 was prepared by Technical Committee ISO/TC 199, Safety of machinery and by Technical
Committee CEN/TC 114, Safety of machinery in collaboration.
This second edition cancels and replaces the first edition (ISO 13856-2:2005), which has been
technically revised.
ISO 13856 consists of the following parts, under the general title Safety of machinery — Pressure-sensitive
protective devices:
— Part 1: General principles for design and testing of pressure-sensitive mats and pressure-sensitive floors
— Part 2: General principles for design and testing of pressure-sensitive edges and pressure-sensitive bars
— Part 3: General principles for design and testing of pressure-sensitive bumpers, plates, wires and
similar devices
© ISO 2013 – All rights reserved v

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SIST EN ISO 13856-2:2013
ISO 13856-2:2013(E)

Introduction
The structure of safety standards in the field of machinery is as follows:
a) Type-A standards (basic safety standards) giving basic concepts, principles for design, and general
aspects that can be applied to all machinery;
b) Type-B standards (generic safety standards) dealing with one safety aspect or one type of safeguard
that can be used across a wide range of machinery:
— Type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise);
— Type-B2 standards on safeguards (e.g. two-hand controls, interlocking devices, pressure-
sensitive devices, guards);
c) Type-C standards (machine safety standards) dealing with detailed safety requirements for a
particular machine or group of machines.
This document is a type-B2 standard as stated in ISO 12100.
The requirements of this document can be supplemented or modified by a type-C standard.
For machines which are covered by the scope of a type-C standard and which have been designed and built
according to the requirements of that standard, the requirements of that type-C standard take precedence.
The safeguarding of machinery (see ISO 12100:2010, 3.21) can be achieved by many different means.
These means include guards which prevent access to the hazard zone by means of a physical barrier
(for example, interlocking guards according to ISO 14119 or fixed guards according to ISO 14120) and
protective devices (for example, electro-sensitive protective equipment according to IEC 61496-1 or
pressure-sensitive protective devices according to this part of ISO 13856).
Type-C standards makers and designers of machinery/installations should consider the best way to
achieve the required level of safety taking into account the intended application and the results of the
risk assessment (see ISO 12100).
The required solution can also be to combine several of these different means. The machinery/installation
supplier and the user examine together carefully the existing hazards and constraints before making
their decision on the choice of safeguarding.
Pressure-sensitive edges and pressure-sensitive bars are safeguards of the mechanically-actuated trip
device type. General requirements for these safeguards (as well as others) are given in ISO 12100:2010,
6.3.1 and 6.3.2.
Pressure-sensitive edges and pressure-sensitive bars are used in a wide range of applications with
different conditions of use relating, for example, to extremes of loading or electrical, physical and
chemical environments. They are interfaced with machine controls to ensure that the machine reverts
to a safe condition if the sensitive protective equipment is actuated.
This part of ISO 13856 is restricted to the design of pressure-sensitive edges and pressure-sensitive
bars so that they can be used when the risk assessment carried out by the machine manufacturer and/or
relevant type-C standard, when available, shows this to be appropriate.
Pressure-sensitive edges and pressure-sensitive bars can be fitted to a fixed or moving part of a machine
or an obstacle to prevent trapping or crushing hazards from another part of a machine. Pressure-
sensitive edges and pressure-sensitive bars are designed, selected, installed and/or interfaced with the
control system of the machine so that the force/pressure applied to a person or parts of the body do not
exceed certain limits.
Pressure-sensitive edges, pressure-sensitive bars, pressure-sensitive bumpers and similar devices have
many similarities. Table 1 summarizes the differences which generally apply between the two types of
vi © ISO 2013 – All rights reserved

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SIST EN ISO 13856-2:2013
ISO 13856-2:2013(E)

pressure-sensitive protective devices covered by this part of ISO 13856 and pressure-sensitive bumpers
(covered by ISO 13856-3 and gives guidance for their application).
Table 1 — Characteristic features of pressure-sensitive edges, pressure-sensitive bars
and pressure-sensitive bumpers
Pressure-sensitive
Pressure-sensitive edge Pressure-sensitive bar
bumper
Cross-section
Regular Regular Regular/irregular
Length/width ratio >1 Any ratio Any ratio
Effective sensing sur- Deforms locally Moves as a whole Deforms locally and/or
face moves as a whole
Body part(s) intended Finger Finger —
to be detected
Hand Hand Hand
Arm Arm Arm
Leg Leg Leg
Head Head Head
Torso Torso Torso
© ISO 2013 – All rights reserved vii

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SIST EN ISO 13856-2:2013

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SIST EN ISO 13856-2:2013
INTERNATIONAL STANDARD ISO 13856-2:2013(E)
Safety of machinery — Pressure-sensitive protective
devices —
Part 2:
General principles for design and testing of pressure-
sensitive edges and pressure-sensiti
...

SLOVENSKI STANDARD
oSIST prEN ISO 13856-2:2011
01-december-2011
9DUQRVWVWURMHY9DURYDOQHQDSUDYHREþXWOMLYHQDWODNGHO6SORãQDQDþHOD
QDþUWRYDQMDLQSUHVNXãDQMDURERYLQGURJRYREþXWOMLYLKQDGRWLN,62',6

Safety of machinery - Pressure-sensitive protective devices - Part 2: General principles
for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO/DIS
13856-2:2011)
Sicherheit von Maschinen - Druckempfindliche Schutzeinrichtungen - Teil 2: Allgemeine
Leitsätze für die Gestaltung und Prüfung von Schaltleisten und Schaltstangen (ISO/DIS
13856-2:2011)
Sécurité des machines - Dispositifs de protection sensibles à la pression - Partie 2:
Principes généraux de conception et d'essai des bords et barres sensibles à la pression
(ISO/DIS 13856-2:2011)
Ta slovenski standard je istoveten z: prEN ISO 13856-2
ICS:
13.110 Varnost strojev Safety of machinery
oSIST prEN ISO 13856-2:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 13856-2:2011

---------------------- Page: 2 ----------------------
oSIST prEN ISO 13856-2:2011


EUROPEAN STANDARD
DRAFT
prEN ISO 13856-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

November 2011
ICS 13.110 Will supersede EN 1760-2:2001+A1:2009
English Version
Safety of machinery - Pressure-sensitive protective devices -
Part 2: General principles for the design and testing of pressure-
sensitive edges and pressure-sensitive bars (ISO/DIS 13856-
2:2011)
Sécurité des machines - Dispositifs de protection sensibles Sicherheit von Maschinen - Druckempfindliche
à la pression - Partie 2: Principes généraux de conception
Schutzeinrichtungen - Teil 2: Allgemeine Leitsätze für die
et d'essai des bords et barres sensibles à la pression Gestaltung und Prüfung von Schaltleisten und
(ISO/DIS 13856-2:2011) Schaltstangen (ISO/DIS 13856-2:2011)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 114.

If this draft becomes a European Standard, CEN 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.

This draft European Standard was established by CEN 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-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 13856-2:2011: E
worldwide for CEN national Members.

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oSIST prEN ISO 13856-2:2011
prEN ISO 13856-2:2011 (E)
Contents Page
Foreword .3

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oSIST prEN ISO 13856-2:2011
prEN ISO 13856-2:2011 (E)
Foreword
This document (prEN ISO 13856-2:2011) has been prepared by Technical Committee ISO/TC 199 "Safety of
machinery" in collaboration with Technical Committee CEN/TC 114 “Safety of machinery” the secretariat of
which is held by DIN.
This document is currently submitted to the parallel Enquiry.
This document will supersede EN 1760-2:2001+A1:2009.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
Endorsement notice
The text of ISO/DIS 13856-2:2011 has been approved by CEN as a prEN ISO 13856-2:2011 without any
modification.

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oSIST prEN ISO 13856-2:2011

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oSIST prEN ISO 13856-2:2011

DRAFT INTERNATIONAL STANDARD ISO/DIS 13856-2
ISO/TC 199 Secretariat: DIN
Voting begins on Voting terminates on

2011-11-10 2012-04-10
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION  •  МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ  •  ORGANISATION INTERNATIONALE DE NORMALISATION


Safety of machinery — Pressure-sensitive protective devices —
Part 2:
General principles for the design and testing of pressure-
sensitive edges and pressure-sensitive bars
Sécurité des machines — Dispositifs de protection sensibles à la pression —
Partie 2: Principes généraux de conception et d'essai des bords et barres sensibles à la pression
[Revision of first edition (ISO 13856-2:2005)]
ICS 13.110





ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.

To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.



THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
©  International Organization for Standardization, 2011

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oSIST prEN ISO 13856-2:2011
ISO/DIS 13856-2

Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.

ii © ISO 2011 – All rights reserved

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oSIST prEN ISO 13856-2:2011
ISO/DIS 13856-2
Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.1
3 Terms and definitions .3
4 Requirements.9
4.1 Effective sensing surface .9
4.2 Actuating force.9
4.3 Pre-travel.10
4.4 Working travel.10
4.5 Overtravel.10
4.6 Force–travel relationship(s).10
4.7 Minimum operating speed.11
4.8 Number of operations .12
4.9 Sensor output.12
4.10 Response of output signal switching device to actuating force.12
4.11 Reset function.13
4.12 Environmental conditions.13
4.13 Power supply variation .14
4.14 Electrical equipment.15
4.15 Hydraulic equipment.15
4.16 Pneumatic equipment.15
4.17 Enclosure.16
4.18 Additional coverings for sensors .16
4.19 Access.16
4.20 Performance levels and categories for safety-related parts of control systems in
accordance with ISO 13849-1.16
4.21 Adjustments.17
4.22 Sensor fixing and mechanical strength .17
4.23 Recovery after deformation.18
4.24 Connections.18
4.25 Sharp corners, sharp edges and rough surfaces .18
4.26 Mechanical features.18
4.27 Inhibition and blocking .18
5 Marking.19
6 Information for selection and use.19
6.1 General.19
6.2 Essential data for the selection of a suitable pressure-sensitive edge or pressure-
sensitive bar.19
6.3 Information for use.20
7 Verification of requirements.23
7.1 General.23
7.2 Test samples.24
7.3 Test pieces.24
7.4 Test No. 1: Safety-related data for selection, installation, commissioning, operation and
maintenance of (a) suitable pressure-sensitive edge(s) or pressure-sensitive bar(s) .25
7.5 Test No. 2: Mounting orientations of sensors.25
7.6 Test No. 3: Actuating force.25
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oSIST prEN ISO 13856-2:2011
ISO/DIS 13856-2
7.7 Test No. 4: Force–travel relationship(s) .31
7.8 Test No. 5: Number of operations.31
7.9 Test No. 6: Output state of the sensor and the output signal switching device.32
7.10 Test No. 7: Response of output signal switching device to actuating force, reset and state
of the power supply.32
7.11 Test No. 8: Environmental conditions .32
7.12 Test No. 9: Power supply variation.35
7.13 Test No. 10: Electrical, hydraulic and pneumatic equipment .35
7.14 Test No. 11: Enclosure .36
7.15 Test No. 12: Additional coverings for sensors .36
7.16 Test No. 13: Access.36
7.17 Test No. 14: Performance-Level (PL) according to ISO 13849-1.36
7.18 Test No. 15: Adjustments.36
7.19 Test No. 16: Sensor fixing and mechanical strength.36
7.20 Test No. 17: Recovery after deformation .36
7.21 Test No. 18: Connections.37
7.22 Test No. 19: Sharp corners, sharp edges and rough surfaces .37
7.23 Test No. 20: Mechanical features.37
7.24 Test No. 21: Inhibition and blocking.37
7.25 Test No. 22: Marking.37
7.26 Test No. 23: Information for selection and use .37
Annex A (normative) Timing diagrams for pressure-sensitive edges and pressure-sensitive bars
with and without reset.38
Annex B (informative) Operating speed, force and travel - Explanatory remarks and
recommendations.42
Annex C (informative) Device selection guidance for the machinery manufacturer/user.44
Annex D (informative) Design guidance .46
Annex E (informative) Application guidance.49
Annex F (informative) Guidance on installation, commissioning and testing.50
Annex G (informative) General considerations for systems meeting category 2 according to
ISO 13849-1.52
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .53
Bibliography .54

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oSIST prEN ISO 13856-2:2011
ISO/DIS 13856-2
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13856-2 was prepared by Technical Committee ISO/TC 199, Safety of machinery, and by Technical
Committee CEN/TC 114, Safety of machinery in collaboration.
ISO 13856 consists of the following parts, under the general title Safety of machinery — Pressure-sensitive
protective devices:
⎯ Part 1: General principles for the design and testing of pressure-sensitive mats and pressure-sensitive
floors
⎯ Part 2: General principles for the design and testing of pressure-sensitive edges and pressure-sensitive
bars
⎯ Part 3: General principles for the design and testing of pressure-sensitive bumpers, plates, wires and
similar devices
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oSIST prEN ISO 13856-2:2011
ISO/DIS 13856-2
Introduction
The structure of safety standards in the field of machinery is as follows:
a) Type-A standards (basic safety standards) giving basic concepts, principles for design, and general
aspects that can be applied to all machinery;
b) Type-B standards (generic safety standards) dealing with one safety aspect or one type of safeguard that
can be used across a wide range of machinery:
⎯ Type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise);
⎯ Type-B2 standards on safeguards (e.g. two-hand controls, interlocking devices, pressure-sensitive
devices, guards);
c) Type-C standards (machine safety standards) dealing with detailed safety requirements for a particular
machine or group of machines.
This document is a type-B standard as stated in ISO 12100.
The requirements of this document can be supplemented or modified by a type-C standard.
For machines which are covered by the scope of a type-C standard and which have been designed and built
according to the requirements of that standard, the requirements of that type-C standard take precedence.
ISO/TC 199 has a mandate in this area to produce type-A and type-B standards, which will allow verification
of conformity with the essential health and safety requirements (EHSRs) relating to the design and
construction of machinery.
The safeguarding of machinery (see ISO 12100:2010, 3.21) can be achieved by many different means. These
means include guards which prevent access to the hazard zone by means of a physical barrier (for example,
interlocking guards according to ISO 14119 and fixed guards according to ISO 14120) and protective devices
(for example, electro-sensitive protective equipment according to IEC 61496-1 and pressure-sensitive
protective devices according to this part of ISO 13856).
Type-C standards makers and designers of machinery / installations should consider the best way to achieve
the required level of safety taking into account the intended application and the results of the risk assessment
(see ISO 12100).
The best solution can also be to combine several of these different means. The machinery/installation supplier
and the user should examine together carefully the existing constraints before making their decision on the
choice of safeguarding.
Pressure-sensitive edges and pressure-sensitive bars are safeguards of the "mechanically actuated trip
device" type. General requirements for these safeguards (as well as other safeguards) are given in
ISO 12100:2010, 6.3.1 and 6.3.2.
Pressure-sensitive edges and pressure-sensitive bars are used in a wide range of applications with different
conditions of use relating, for example, to extremes of loading or electrical, physical and chemical
environments. They are interfaced with machine controls to ensure that the machine reverts to a safe
condition if the sensitive protective equipment is actuated.
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oSIST prEN ISO 13856-2:2011
ISO/DIS 13856-2
Each type of application presents particular hazards. It is not the intention of this part of ISO 13856 to identify
those hazards nor to recommend specific methods of application to particular machines. This is normally the
aim of type-C standards.
Pressure-sensitive edges and pressure-sensitive bars can be fitted to a moving part of a machine at the point
where a trapping, crushing or collision hazard can occur. They can also be fitted to a fixed part of a machine
or an obstacle to prevent trapping or crushing hazards with a moving part of a machine. Pressure-sensitive
edges and pressure-sensitive bars are designed, selected, installed and/or interfaced with the control system
of the machine so that the force/pressure applied to a person or parts of the body do not exceed certain limits.
Pressure-sensitive edges, pressure-sensitive bars, pressure-sensitive bumpers and similar devices have
many similarities. Table 1 summarises the differences which generally apply between the two types of
pressure-sensitive protective devices covered by this part of ISO 13856 and pressure-sensitive bumpers
(covered by part 3 of this International Standard) and gives guidance for their application.
Table 1 — Characteristic features of pressure-sensitive edges, pressure-sensitive bars
and pressure-sensitive bumpers
cross section pressure-sensitive edge pressure-sensitive bar pressure-sensitive bumper
regular regular regular / irregular
length/width ratio >1 any ratio any ratio
effective sensing deforms locally moves as a whole deforms locally and/or
surface moves as a whole
body part(s) intended finger finger —
to be detected
hand hand hand
arm arm arm
leg leg leg
head head head
torso torso torso
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oSIST prEN ISO 13856-2:2011

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oSIST prEN ISO 13856-2:2011
DRAFT INTERNATIONAL STANDARD ISO/DIS 13856-2

Safety of machinery — Pressure-sensitive protective devices —
Part 2:
General principles for the design and testing of pressure-
sensitive edges and pressure-sensitive bars
1 Scope
This part of ISO 13856 establishes general principles and specifies requirements for the design and testing of
pressure-sensitive edges and pressure-sensitive bars used as safeguards and not as actuating devices for
normal operation. It is applicable to pressure-sensitive edges and pressure-sensitive bars, with or without an
external reset facility, used to detect persons or body parts of them which can be exposed to a hazard such as
moving parts.
This part of ISO 13856 is primarily aimed at safety and reliability rather than suitability. For the relationship
between safety and reliability see ISO 13849-1:2006, 4.2.
This document is restricted to the functioning of pressure-sensitive edges and pressure-sensitive bars and
does not specify the requirements for their application (e.g. dimensions with regard to a particular application).
However, Clause 6 contains requirements for the information for use to be provided by the manufacturer.
This part of ISO 13856 does not apply to stopping devices according to IEC 60204-1 used only for normal
operation, including emergency stopping, of machinery.
Additional requirements can be necessary, where pressure-sensitive edges or pressure-sensitive bars are
used in locations accessible to elderly or disabled people or children.
NOTE Possibly not all tests given in this part of ISO 13856 for pressure-sensitive edges and pressure-sensitive bars
can be carried out when they have been designed and built into the machinery by its manufacturer. In this case the tests
should be carried out before the pressure-sensitive protective device is implemented in the machinery.
2 Normative references
The following referenced 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.
ISO 4413, Hydraulic fluid power – General rules and safety requirements for systems
ISO 4414, Pneumatic fluid power – General rules and safety requirements for systems and their components
ISO 12100:2010, Safety of machinery – General principles for design – Risk assessment and risk reduction
ISO 13849-1:2006, Safety of machinery – Safety-related parts of control systems – Part 1: General principles
for design
ISO 13849-2, Safety of machinery – S
...