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
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
18-Oct-2013
Due Date
23-Dec-2013
Completion Date
21-Oct-2013

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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.

---------------------- Page: 1 ----------------------
SIST EN ISO 13856-2:2013
---------------------- Page: 2 ----------------------
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.
---------------------- Page: 3 ----------------------
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

---------------------- Page: 4 ----------------------
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.

---------------------- Page: 5 ----------------------
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.
---------------------- Page: 6 ----------------------
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 copyright@iso.org
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
---------------------- Page: 10 ----------------------
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
---------------------- Page: 11 ----------------------
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
---------------------- Page: 12 ----------------------
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
...

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