Safety of machinery - Interlocking devices associated with guards - Principles for design and selection (ISO 14119:2025)

This document specifies principles for the design and selection (independent of the nature of the energy source) of interlocking devices associated with guards and provides guidance on measures to minimize the possibility of defeat of interlocking devices in a reasonably foreseeable manner.
This document covers principles for the design, selection and application of the following:
—     parts of the guards which actuate interlocking devices;
—     trapped key interlocking devices and systems for machinery applications.
NOTE            ISO 14120 specifies general requirements for the design and construction of guards provided primarily to protect persons from mechanical hazards. The processing of the signal from the interlocking device to stop the machine and prevent unexpected start up is covered in ISO 14118, ISO 13849-1 and IEC 62061.

Sicherheit von Maschinen - Verriegelungseinrichtungen in Verbindung mit trennenden Schutzeinrichtungen - Leitsätze für Gestaltung und Auswahl (ISO 14119:2025)

Dieses Dokument legt die Grundsätze für die Gestaltung und Auswahl (unabhängig von der Art der Energie¬quelle) von Verriegelungseinrichtungen in Verbindung mit trennenden Schutzeinrichtungen fest und enthält eine Anleitung für Maßnahmen, mit denen die Möglichkeit des Umgehens auf eine vernünftigerweise vorhersehbarer Art von Verriegelungseinrichtungen auf ein Mindestmaß verringert wird.
Dieses Dokument behandelt die Grundsätze für die Gestaltung, Auswahl und Anwendung von Folgendem:
   Teilen der trennenden Schutzeinrichtungen, welche die Verriegelungseinrichtungen aktivieren;
   Verriegelungseinrichtungen mit Schlüsseltransfer und Schlüsseltransfersystemen für Maschinenanwendungen.
ANMERKUNG   ISO 14120 legt allgemeine Anforderungen an die Gestaltung und die Konstruktion von trennenden Schutzeinrichtungen fest, die hauptsächlich dafür vorgesehen sind, Personen vor mechanischen Gefährdungen zu schützen. Die Verarbeitung des von der Verriegelungseinrichtung ausgehenden Signals zum Anhalten der Maschine und um deren unerwarteten Anlauf zu verhindern wird von ISO 14118, ISO 13849 1 und IEC 62061 abgedeckt.

Sécurité des machines - Dispositifs de verrouillage associés à des protecteurs - Principes de conception et de choix (ISO 14119:2025)

Le présent document spécifie des principes de conception et de choix (indépendamment de la nature de la source d'énergie) des dispositifs de verrouillage associés à des protecteurs et fournit des recommandations concernant les mesures visant à minimiser la possibilité de neutralisation des dispositifs de verrouillage d'une manière raisonnablement prévisible.
Le présent document couvre les principes de conception, de choix et de fonction suivants:
—     des composants constituant les protecteurs responsables de l'activation des dispositifs de verrouillage;
—     des dispositifs et systèmes de verrouillage à clé captive pour l'application aux machines.
NOTE            L'ISO 14120 spécifie les exigences générales relatives à la conception et à la construction des protecteurs principalement destinés à préserver les personnes des phénomènes dangereux mécaniques. Le traitement du signal issu du dispositif de verrouillage entraînant l'arrêt de la machine et empêchant toute mise en marche intempestive est couvert dans l'ISO 14118, l'ISO 13849-1 et l'IEC 62061.

Varnost strojev - Zaporne naprave, povezane z varovali - Načela za načrtovanje in izbiro (ISO 14119:2025)

General Information

Status
Published
Public Enquiry End Date
21-Mar-2021
Publication Date
11-Jun-2025
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
26-Feb-2025
Due Date
03-May-2025
Completion Date
12-Jun-2025

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SLOVENSKI STANDARD
01-julij-2025
Varnost strojev - Zaporne naprave, povezane z varovali - Načela za načrtovanje in
izbiro (ISO 14119:2025)
Safety of machinery - Interlocking devices associated with guards - Principles for design
and selection (ISO 14119:2025)
Sicherheit von Maschinen - Verriegelungseinrichtungen in Verbindung mit trennenden
Schutzeinrichtungen - Leitsätze für Gestaltung und Auswahl (ISO 14119:2025)
Sécurité des machines - Dispositifs de verrouillage associés à des protecteurs -
Principes de conception et de choix (ISO 14119:2025)
Ta slovenski standard je istoveten z: EN ISO 14119:2025
ICS:
13.110 Varnost strojev Safety of machinery
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14119
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2025
EUROPÄISCHE NORM
ICS 13.110 Supersedes EN ISO 14119:2013
English Version
Safety of machinery - Interlocking devices associated with
guards - Principles for design and selection (ISO
14119:2024)
Sécurité des machines - Dispositifs de verrouillage Sicherheit von Maschinen -
associés à des protecteurs - Principes de conception et Verriegelungseinrichtungen in Verbindung mit
de choix (ISO 14119:2024) trennenden Schutzeinrichtungen - Leitsätze für
Gestaltung und Auswahl (ISO 14119:2024)
This European Standard was approved by CEN on 21 July 2024.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14119:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of 2006/42/EC aimed to be covered . 4

European foreword
This document (EN ISO 14119:2025) 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 September 2025, and conflicting national standards
shall be withdrawn at the latest by September 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14119:2013.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 14119:2024 has been approved by CEN as EN ISO 14119:2025 without any modification.

Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
Mandate to CEN and CENELEC for Standardisation in the field of machinery" to provide one voluntary
means of conforming to essential requirements of 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).
Once this standard is cited in the Official Journal of the European Union under that Directive,
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 Annex I of
Directive 2006/42/EC
The relevant Essential Clause(s)/subclause(s) of this EN Remarks/Notes
Requirements of Directive
2006/42/EC
1.1.2 6, 7, 8, Annex K
1.2.1 6, 9
1.2.2 6, 7, Annex K
1.2.3 9
1.2.4 9
1.4.2.2 5, 6, 7, 8
1.5.4. 6
1.5.14 6, 7, Annex K
1.6.1 6, 8, 10
1.7.3 10
1.7.4.2 10
Table ZA.2 — Applicable Standards to confer presumption of conformity as described in this
Annex ZA
Reference in Clause 2 International Title Corresponding
Standard Edition European Standard
Edition
ISO 12100:2010 ISO 12100:2010 Safety of machinery — EN ISO 12100:2010
General principles for design
— Risk assessment and risk
reduction
ISO 13849-1:2023 ISO 13849-1:2023 Safety of machinery — EN ISO 13849-1:2023
Safety-related parts of
control systems — Part 1:
General principles for design
ISO 13849-2:2012 ISO 13849-2:2012 Safety of machinery — EN ISO 13849-2: 2012
Safety-related parts of
control systems — Part 2:
Validation
ISO 13855:20— ISO 13855:2023 Safety of machinery — EN ISO 13855: 20—
Positioning of safeguards
with respect to the approach
speeds of parts of the human
body
ISO 14118:2017 ISO 14118:2017 Safety of machinery — EN ISO 14118:2017
Prevention of unexpected
start-up
IEC 60204-1:2016 +AM IEC 60204-1:2016 + Safety of machinery — EN 60204-1:2018
D1:2021 AMD1:2021 Electrical equipment of
machines — Part 1: General
requirements
IEC 60947-1:2020 IEC 60947-1:2020 Low-voltage switchgear and EN IEC 60947-1: 2021
controlgear — Part 1:
General rules
IEC 60947-3 IEC 60947-3 Low-voltage switchgear and EN IEC 60947-3: 2021
controlgear — Part 3:
Switches, disconnectors,
switch-disconnectors and
fuse-combination units
IEC 60947-5-1:2016 +C IEC 60947-5-1:2016 Low voltage switchgear and EN 60947-5-1:2017
OR:2016 +COR:2016 controlgear — Part 5-1:
Control circuit devices and
switching elements —
Electromechanical control
circuit devices
IEC 60947-5-3 IEC 60947-5-3 Low-voltage switchgear and EN 60947-5-3:2013
controlgear — Part 5-3:
Control circuit devices and
switching elements —
Requirements for proximity
devices with defined
behaviour under fault
conditions (PDDB)
IEC 62061:2021 IEC 62061:2021 Safety of machinery - EN IEC 62061:2021
Functional safety of safety-
related control systems
The documents listed in the Column 1 of Table ZA.2, in whole or in part, are normatively referenced in
this document, i.e. are indispensable for its application. The achievement of the presumption of
conformity is subject to the application of the edition of Standards as listed in Column 4 or, if no
European Standard Edition exists, the International Standard Edition given in Column 2 of Table ZA.2.
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
International
Standard
ISO 14119
Third edition
Safety of machinery — Interlocking
2024-09
devices associated with guards —
Principles for design and selection
Sécurité des machines — Dispositifs de verrouillage associés à des
protecteurs — Principes de conception et de choix
Reference number
ISO 14119:2024(en) © ISO 2024
ISO 14119:2024(en)
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 14119:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols . 9
5 Operating principles and types of interlocking devices associated with guards .10
5.1 General .10
5.2 Principles of guard interlocking without guard locking . 13
5.3 Principles of guard interlocking with guard locking . 13
5.3.1 General . 13
5.3.2 Interlocking device with guard locking .14
6 Requirements for the design and the arrangements of interlocking devices with and
without guard locking .16
6.1 General .16
6.2 Arrangement and fastening of position switches, bolt locks and access locks .16
6.3 Arrangement and fastening of actuators .17
6.3.1 General .17
6.3.2 Cams .17
6.4 Act
...

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