SIST EN 1088:2000/A1:2007
(Main)Safety of machinery - Interlocking devices associated with guards - Principles for design and selection
Safety of machinery - Interlocking devices associated with guards - Principles for design and selection
This standard specifies principles for the design and selection - independent of the nature of the energy source - of interlocking devices associated with guards (as defined in 3.23.1 'interlocking device [interlock]', 3.22.4 'interlocking guard' and 3.22.5 'interlocking guard with guard locking' of EN 292-1). It also provides requirements specifically intended for electrical interlocking devices (see clause 6). This standard covers the parts of guards which actuate interlocking devices. Requirements for guards are given in prEN 953. The processing of the signal from the interlocking device to stop and immobilize the machine is dealt with in prEN 954-1.
Sicherheit von Maschinen - Verriegelungseinrichtungen in Verbindung mit trennenden Schutzeinrichtungen - Leitsätze für Gestaltung und Auswahl
Sécurité des machines - Dispositifs de verrouillage associés a des protecteurs - Principes de conception et de choix
Varnost strojev - Zaporne naprave, povezane z varovali - Načela za načrtovanje in izbiro
General Information
Relations
Standards Content (Sample)
SLOVENSKI SIST EN 1088:2000/oprA1:2005
PREDSTANDARD
maj 2005
Varnost strojev - Zaporne naprave, povezane z varovali - Načela za
načrtovanje in izbiro – Dopolnilo 1
Safety of machinery - Interlocking devices associated with guards - Principles for
design and selection - DRAFT AMENDMENT 1: Design to minimize defeat
possibilities
ICS 13.110 Referenčna številka
SIST EN 1088:2000/oprA1:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
EN 1088:1995
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
March 2005
ICS 13.110
English version
Safety of machinery - Interlocking devices associated with
guards - Principles for design and selection - DRAFT
AMENDMENT 1: Design to minimize defeat possibilities
Sécurité des machines - Dispositifs de verrouillage Sicherheit von Maschinen - Verriegelungseinrichtungen in
associés à des protecteurs - Principes de conception et de Verbindung mit trennenden Schutzeinrichtungen - Leitsätze
choix - PROJET AMENDEMENT 1: Conception réduisant für Gestaltung und Auswahl - ÄNDERUNGSENTWURF 1:
les possibilités de fraude Gestaltung zur Verringerung von Umgehungsmöglichkeiten
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 114.
This draft amendment A1, if approved, will modify the European Standard EN 1088:1995. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment 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 Management Centre has the same status
as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1088:1995/prA1:2005: E
worldwide for CEN national Members.
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EN 1088:1995/prA1:2005 (E)
Foreword
This document (EN 1088:1995/prA1:2005) has been prepared by Technical Committee CEN/TC 114 “Safety
of machinery”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
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).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
This document corresponds to ISO 14119:1998/DAM1:2004 prepared by Technical Committee
ISO/TC 199 “Safety of machinery” (Secretariat: DIN), which is currently submitted to DIS vote. It is
foreseen to deal with the comments received on both enquiries in the same WG of ISO/TC 199, in
parallel.
2
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EN 1088:1995/prA1:2005 (E)
The aim of this document is the specification of more precise requirements in order to improve the provisions
for minimizing defeat possibilities.
Changed text — DRAFT AMENDMENT TO EN 1088:1995
Delete 5.7 "Design to minimize defeat possibilities" and substitute as follows:
5.7 Design to minimize defeat possibilities
5.7.1 General
Interlocking devices shall be designed and instructions for their installation and maintenance shall be given so
that they cannot be defeated in a simple manner.
NOTE "Defeat in a simple manner" means "intended operation achieved manually or with a readily available object".
Readily available objects may be :
screws, needles, sheet-metal pieces;
objects in daily use such as keys and coins;
spare actuators or spare keys for the trapped-key interlocking devices;
tools required by the intended use of the machine or readily available tools (e.g. screwdrivers, wrenches, hexagonal
keys and pliers.
“Defeat in a simple manner” includes the release of switches or actuators with the help of the above-mentioned tools, with
the intention to disable an interlocking device.
Provisions by which defeat may be made more difficult shall include at least one of the following measures:
a) provisions expressed in 5.2.2;
b) the use of interlocking devices or systems which are coded, e.g. mechanically, electrically, magnetically or
optically;
c) physical obstruction or shielding preventing access to the interlocking device while the guard is open (see
examples in Figures 5 and
...
SLOVENSKI STANDARD
SIST EN 1088:2000/A1:2007
01-september-2007
9DUQRVWVWURMHY=DSRUQHQDSUDYHSRYH]DQH]YDURYDOL1DþHOD]DQDþUWRYDQMHLQ
L]ELUR
Safety of machinery - Interlocking devices associated with guards - Principles for design
and selection
Sicherheit von Maschinen - Verriegelungseinrichtungen in Verbindung mit trennenden
Schutzeinrichtungen - Leitsätze für Gestaltung und Auswahl
Sécurité des machines - Dispositifs de verrouillage associés a des protecteurs -
Principes de conception et de choix
Ta slovenski standard je istoveten z: EN 1088:1995/A1:2007
ICS:
13.110 Varnost strojev Safety of machinery
SIST EN 1088:2000/A1:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN 1088:1995/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2007
ICS 13.110
English Version
Safety of machinery - Interlocking devices associated with
guards - Principles for design and selection
Sécurité des machines - Dispositifs de verrouillage Sicherheit von Maschinen - Verriegelungseinrichtungen in
associés à des protecteurs - Principes de conception et de Verbindung mit trennenden Schutzeinrichtungen - Leitsätze
choix für Gestaltung und Auswahl
This amendment A1 modifies the European Standard EN 1088:1995; it was approved by CEN on 8 March 2007.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1088:1995/A1:2007: E
worldwide for CEN national Members.
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EN 1088:1995/A1:2007 (E)
Foreword
This document (EN 1088:1995/A1:2007) has been prepared by Technical Committee CEN/TC 114 “Safety of
machinery”, the secretariat of which is held by DIN.
This Amendment to the European Standard EN 1088:1995 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by October 2007, and conflicting
national standards shall be withdrawn at the latest by April 2008.
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).
This document corresponds to ISO 14119:1998/DAM1:2006 prepared by Technical Committee ISO/TC 199
"Safety of machinery" (secretariat: DIN), which is currently submitted to FDIS vote.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
2
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EN 1088:1995/A1:2007 (E)
Introduction
The aim of this document is the specification of more precise requirements in order to improve the provisions
for minimizing the possibilities for defeat by machine operators. Research in some fields has shown that
operators often try to defeat a guard interlocking safety function by attempting to defeat the interlocking device,
the possibility of defeat being primarily attributable to shortcomings in the design of the machine.
1 Modification to 5.7
Delete 5.7 "Design to minimize defeat possibilities" and replace with the following:
“5.7 Design to minimize defeat possibilities
5.7.1 General
The requirements contained in this amendment for minimizing the possibilities for defeat of an interlocking
device need not apply if the safety interlocking function has other effective measures to minimize the
possibility of its defeat. These other measures include:
specification of the safety interlocking function is such that measures for minimizing the possibilities for
defeat are implemented at the system level and therefore do not rely on the interlocking device itself (e.g.
cyclical testing, status indication, time limitation), see NOTE 1;
specification of the safety interlocking function is such that measures for minimizing the possibilities for
defeat is achieved by removing the foreseeable reason for attempting to defeat the interlocking device.
This can include the provision of specific operating modes to facilitate the safe and efficient
accomplishment of all foreseeable tasks during the full lifecycle of the machine, see NOTES 1 and 2.
NOTE 1 The specification of safety functions and the design of safety related control systems that implement them are
outside the scope of this European Standard. For information on this subject see EN ISO 12100, EN 62061, EN ISO
13849-1 and EN ISO 13849-2.
NOTE 2 This approach can be effective at preventing any defeat of the safety function.
If the specification of the safety interlocking function is such that it is possible to defeat the safety function
solely by a reasonably foreseeable action at the interlocking device itself and if the device itself is to be relied
on to prevent defeat, it should provide measures to minimize the possibility of defeat. The extent to which
these measures are applied should depend on the likelihood of occurrence of attempts to defeat the device
and also on the risk exposed by the defeat of the safety function. This information shall be produced by risk
assessment (see EN 1050).
Interlocking devices shall be designed and instructions for their installation and maintenance shall be given, to
prevent the possibility of their defeat in a reasonably foreseeable manner.
NOTE 3 The implementation of alternative modes of operation can avoid the temptation and/or motivation of defeat.
NOTE 4 “Defeat in a reasonably foreseeable ma
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