SIST EN ISO 12643-3:2024

SLOVENSKI STANDARD
01-marec-2024
Nadomešča:
SIST EN 1010-3:2003+A1:2009
SIST ISO 12643-3:2014
Grafična tehnologija - Varnostne zahteve za grafično tehnološko opremo in
sisteme - 3. del: Oprema v knjigoveznici in grafični dodelavi ter sistemi (ISO 12643-
3:2023)
Graphic technology - Safety requirements for graphic technology equipment and
systems - Part 3: Binding and finishing equipment and systems (ISO 12643-3:2023)
Graphische Technik - Sicherheitsanforderungen an Ausrüstungen und Systeme der
graphischen Technik - Teil 3: Ausrüstungen und Systeme in der Buchbinderei und
Druckweiterverarbeitung (ISO 12643-3:2023)
Technologie graphique - Exigences de sécurité pour les systèmes et l'équipement de
technologie graphique - Partie 3: Systèmes et équipement de reliure et de finissage (ISO
12643-3:2023)
Ta slovenski standard je istoveten z: EN ISO 12643-3:2023
ICS:
37.100.10 Reprodukcijska oprema Reproduction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 12643-3
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 37.100.10 Supersedes EN 1010-3:2002+A1:2009, EN 1010-
4:2004+A1:2009
English Version
Graphic technology - Safety requirements for graphic
technology equipment and systems - Part 3: Binding and
finishing equipment and systems (ISO 12643-3:2023)
Technologie graphique - Exigences de sécurité pour les Graphische Technik - Sicherheitsanforderungen an
systèmes et l'équipement de technologie graphique - Ausrüstungen und Systeme der graphischen Technik -
Partie 3: Systèmes et équipement de reliure et de Teil 3: Ausrüstungen und Systeme in der Buchbinderei
finissage (ISO 12643-3:2023) und Druckweiterverarbeitung (ISO 12643-3:2023)
This European Standard was approved by CEN on 19 November 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12643-3:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 12643-3:2023) has been prepared by Technical Committee ISO/TC 130
"Graphic technology" in collaboration with Technical Committee CEN/TC 198 “Printing and paper
machinery - Safety” 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 June 2024, and conflicting national standards shall be
withdrawn at the latest by June 2026.
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 1010-3:2002+A1:2009 and EN 1010-4:2004+A1:2009.
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 12643-3:2023 has been approved by CEN as EN ISO 12643-3:2023 without any
modification.
INTERNATIONAL ISO
STANDARD 12643-3
Third edition
2023-11
Graphic technology — Safety
requirements for graphic technology
equipment and systems —
Part 3:
Binding and finishing equipment and
systems
Technologie graphique — Exigences de sécurité pour les systèmes et
l'équipement de technologie graphique —
Partie 3: Systèmes et équipement de reliure et de finissage
Reference number
ISO 12643-3:2023(E)
ISO 12643-3:2023(E)
© ISO 2023
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 12643-3:2023(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Significant hazards . 4
5 Guarding of significant hazards . 4
5.1 General . 4
5.2 Interlocks . 5
5.2.1 Interlocking with guard locking . 5
5.2.2 Exception for machine motion at inching speed . 6
5.2.3 Exception for machine motion at production speed . 6
5.3 Guarding of hoppers and hopper feeders . 6
5.3.1 Manually loaded hoppers . 6
5.3.2 Guarding of automatically fed hoppers . 6
5.3.3 Protection of unused hoppers and hopper feeders . 7
5.3.4 Separating elements on hopper feeders . 7
5.4 Guarding on binding and finishing machines . 7
5.4.1 Hand-fed riveting, eyeletting and attaching machines . 7
5.4.2 Hand-fed flat- and saddle-stitching machines . 7
5.4.3 Gang stitchers and drum stitchers . 8
5.4.4 Gathering machines . 11
5.4.5 Perfect binders . 13
5.4.6 Paper drills . 15
5.4.7 Book signature presses . 17
5.4.8 Book press . 17
5.4.9 Sheet-folding machines . 18
5.4.10 Book production lines for the production of hard-cover books . 19
5.4.11 Back-rounding and pressing machines. 20
5.4.12 Backlining and head-banding machines. 20
5.4.13 Casing-in (case-binding) machines . 21
5.4.14 Book-cover crease-forming machines (presses) .23
5.5 Inserting and collating machines . 23
5.6 Counter-stackers . .23
5.6.1 Safeguarding divert gates (waste separator) .23
5.6.2 Safeguarding hazard points at turntable . 24
5.6.3 Pneumatic system . 24
5.7 Paper-embossing machines. 24
5.7.1 Safeguarding in-running nips on guide rollers . 24
5.7.2 Stretch rollers and counter rollers . 24
5.7.3 Safeguarding movement of counter roller . 24
5.7.4 Insulation of heated parts . 25
5.8 Finishing machines . 25
5.8.1 Coaters . 25
5.8.2 Laminators . 27
5.9 Guillotine cutters .30
5.9.1 Knife cycles . . .30
5.9.2 Interruption of cutting cycles . 31
5.9.3 Clamping . 31
5.9.4 Failure of knife and clamp bar linkages. 32
5.9.5 Backgauge . 32
5.9.6 Guarding front (operating side) of a guillotine.34
iii
ISO 12643-3:2023(E)
5.9.7 Pile-support angles (jogging blocks) .38
5.9.8 Knife changing and adjustment .39
5.9.9 Hazards from integral feeding and delivery equipment on guillotine cutters .39
5.10 Trimmers and three knife trimmers . 41
5.11 Three-knife trimmer with manual infeed . 42
5.12 Inserters/attaching machines . 43
5.13 Overcover/protective wrapper gluers. 43
5.14 Corner-rounding machines . 43
6 Verification of the safety requirements and/or protective/ risk reduction measures . 44
7 Information for use — Contents of instruction handbook .47
7.1 Information for gang stitchers . 47
7.2 Information for gathering machines . 47
7.3 Information for perfect binders . 47
7.4 Information for sheet folding machines .48
7.5 Information for inserting machines .48
7.6 Information for machines for the production of envelopes .48
7.7 Information for guillotine cutters .49
7.8 Information for integral feeding and delivery equipment for guillotine cutters .49
7.9 Information for trimmers .49
7.10 Information for corner-rounding machines .50
7.11 Information for contact with hot surfaces above 65 °C .50
Annex A (normative) Safety distance of ESPDs on guillotine cutters and three knife
trimmers with manual infeed — Formulae for the calculation of safety distance of
ESPDs .51
Annex B (informative) List of significant hazards .52
Bibliography .62
iv
ISO 12643-3:2023(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 130, Graphic technology, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 198, Printing
and paper machinery — Safety, in accordance with the Agreement on technical cooperation between ISO
and CEN (Vienna Agreement).
This third edition cancels and the second edition (ISO 12643-3:2010), which has been technically
revised.
The main changes are as follows:
— in 5.2, requirements for interlocks have been included (specific clause in ISO 12643-1 has been
deleted);
— in 5.3.4, requirements for residual pile monitoring as a safety device on hopper feeders have been
revised
— in 5.4.4, requirements on feeders and feeding sections at gathering machines have been added;
— in 5.4.4.4, requirements for residual pile monitoring as a safety device on feeders at gathering
machines have been revised
— in 5.4.5, the requirements on safety-related control systems for temperature control and temperature
monitoring in the gluing unit at perfect binders have been revised;
— in 5.4.5.7, requirements for safeguarding milling head cutters at perfect binders have been added;
— in 5.4.5.9, requirements for emergency stop at perfect binders have been added;
— requirements related to hazards dealt with in ISO 12643-1 have been deleted throughout the
document (inclusion in the list of significant hazards);
v
ISO 12643-3:2023(E)
— in 5.4.5, the requirements on safety-related control systems for temperature control and temperature
monitoring in the gluing section for hardcover lines have been revised;
— in 5.9.2, requirements for retraction of knife and clamp at guillotine cutters have been added;
— in 5.9.6; Figures 29 and 30 on guillotine cutters have been revised (30 mm added)
— the formula for the calculation of the minimum safety distance at guillotine cutters has been moved
to A.1 as it also refers to the new subclause 5.11;
— a new subclause 5.11, Three-knife trimmers with manual infeed, has been added;
— in Clause 6, the table for the verification of the safety requirements and/or protective/risk reduction
measures has been added;
— the list of significant hazards has been moved to Annex B;
— a reference to ISO 13849-2 has been added in Bibliography.
This document is intended to be used in conjunction with ISO 12643-1:2023.
A list of all parts in the ISO 12643 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
vi
ISO 12643-3:2023(E)
Introduction
This document is a type-C standard as stated in ISO 12100:2010.
This document is of relevance, in particular, for the following stakeholder groups representing the
market players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.)
Others can be affected by the level of machinery safety achieved with the means of the document by the
above-mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (e.g. trade unions, organizations for people with special needs);
— service providers, e. g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting
process of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events
are covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or
type-B standards, the requirements of this type-C standard take precedence over the requirements of
the other standards for machines that have been designed and built according to the requirements of
this type-C standard.
During the development of this document, existing relevant standards of other countries were taken
into consideration. In cases where it was known that there is a national requirement that differs from
this document, that has been noted.
The full set of requirements for graphic technology equipment and systems are those given in the part
of ISO 12643 applicable to that type, together with the relevant requirements from ISO 12643-1:2023,
to the extent specified in the Scope of the applicable part of ISO 12643.
This document supplements and modifies the general requirements of ISO 12643-1:2023. Where a
requirement of this document conflicts with a requirement of ISO 12643-1:2023 the requirement of this
document will take precedence.
vii
INTERNATIONAL STANDARD ISO 12643-3:2023(E)
Graphic technology — Safety requirements for graphic
technology equipment and systems —
Part 3:
Binding and finishing equipment and systems
1 Scope
This document provides safety requirements specific to binding and finishing equipment and systems.
It provides additional safety requirements for the design and construction of new equipment used to
convert printed or blank substrates into cut, folded, collated, assembled, bound, or otherwise finished
product.
This document is applicable to processes for preparing substrate for the printing process. It is also
applicable to a wide range of equipment used in the binding and finishing process.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 12643-1:2023, Graphic technology — Safety requirements for graphic technology equipment and
systems — Part 1: General requirements
ISO 13849-1:2023, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper
and lower limbs
ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of
fixed and movable guards
ISO 14123-1:2015, Safety of machinery — Reduction of risks to health resulting from hazardous substances
emitted by machinery — Part 1: Principles and specifications for machinery manufacturers
ISO 14123-2:2015, Safety of machinery — Reduction of risks to health resulting from hazardous substances
emitted by machinery — Part 2: Methodology leading to verification procedures
IEC 62061:2021, Safety of machinery — Functional safety of safety-related electrical, electronic and
programmable electronic control systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12643-1:2023,
ISO 13849-1:2023 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
ISO 12643-3:2023(E)
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
anti-repeat device
mechanical or electromechanical mechanism that ensures that only one cutting cycle occurs for each
manual activation or automatic cut if the primary stopping system or single-cycle device (3.30) fails
3.2
automatic cutting sequence
programmed succession of clamping operations and/or cutting movements that is initiated by the
operator and proceeds to a specified point without further intervention by the operator
3.3
back-rounding and pressing machine
apparatus for processing book signatures, i.e. for rounding the spine and the trimmed front edge of
book signatures and compressing the resulting signatures
3.4
backgauge
movable device (automatic or manual) on a guillotine cutter, positioned square to the cutting table,
used to stop the stack of material to be cut when the material is pushed into the opening under the
cutting blade by the operator, as well as to determine the dimensions of the cut
3.5
backlining and head-banding machine
equipment for the automatic production of hard-cover books where the
binding together of the signatures is rounded or flat, with glue, gauze, or paper
3.6
book-cover crease-forming machine
apparatus for creating, under heat and pressure, a permanent bend in the
cover of a hard-cover book, then pressing the entire cover surface
3.7
book press
device used for flattening books
3.8
book signature press
power-operated device used for flattening book signatures, which are fed and aligned manually
3.9
casing-in machine
apparatus for gluing the end papers of the book signatures to the interior
surfaces of the book cover
3.10
clamp bar
device using pressure to secure product so that it does not move during an operation
3.11
coater
finishing machine that applies a predetermined thickness of a liquid substance (e.g. glue, varnish, ink)
on substrates made of paper or a similar material
3.12
counter-stacker
machine for stacking piles of leaflets, books, magazines or newspapers such that the successive layers
are positioned at 180° to the previous layer
ISO 12643-3:2023(E)
3.13
cutting cycle
programmed succession of operations that begins when
the knife drive is activated and ends when the knife returns to its retracted position
3.14
cutting cycle
programmed succession of operations that begins when
high-pressure clamping is initiated and ends when the knife and clamp bar (3.10) return to their
retracted positions after a single clamp bar/knife stroke
3.15
cutting zone
three-dimensional space through which any part of the knife (knives) and/or clamp bar(s) (3.10) travels
during the entire cutting cycle (3.14)
3.16
gang stitcher
machine for stitching folded sheets of paper, during the operation in which individual folded sheets are
removed by feeding grippers and the open sheets are stacked on top of each other on a transport chain
for subsequent back-stitching
3.17
gathering machine
apparatus that assembles sheets or folded sheets in a binding line
3.18
guillotine cutter
power-driven machine having a single knife that is used primarily to cut paper products, stacks of
paper, or other substrates, as specified by the manufacturer
3.19
high-pressure clamping
operation of clamp bar(s) (3.10) with a dynamic force in excess of 300 N for machines up to and including
1,6 m in width, or in excess of 500 N for machines greater than 1,6 m in width, when measured at 75 %
of the clamp bar opening (e.g. with the clamp bar at 25 % of its maximum travel distance measured
from the retracted position)
Note 1 to entry: The 75 % value is to ensure that the measurement is made at the position that approximates to
the size of an operator's hand.
3.20
inserting machine
apparatus that inserts printed matter such as leaflets and magazines at a predetermined position in
other printed products, such as newspapers or magazines
3.21
knife drive
mechanism by which the knife of the guillotine is forced through the material to be cut
3.22
laminator
paper-finishing machine that applies a solid material (e.g. foil, paper) to a substrate made of paper or a
similar material
ISO 12643-3:2023(E)
3.23
low-pressure clamping
operation of clamp bar(s) (3.10) with a dynamic force not
exceeding 300 N for machines up to and including 1,6 m in width, or not exceeding 500 N for machines
greater than 1,6 m in width, when measured at 75 % of the clamp bar opening (with the clamp bar at
25 % of its maximum travel measured from the retracted position)
Note 1 to entry: The 75 % value is to ensure that the measurement is made at the position that approximates to
the size of an operator's hand.
3.24
manual clamping
operation of clamp bar(s) (3.10) in which the dynamic and static forces and motion of the clamp bar are
directly supplied by the operator
3.25
paper drill
machine used to drill holes into piles of paper
3.26
paper-embossing machine
machine for finishing paper surfaces by using cylinders to press a design in relief into the paper
3.27
perfect binder
machine for the automatic production of brochures (soft-cover) or book signatures (hard-cover) where
gathered folded sheets or single sheets are bound to form book or brochure signatures by applying glue
on the pre-processed book back, and where book or brochure signatures are inserted into covers by
gluing the cover on the back and/or sides
3.28
safety distance
minimum distance a protective device is required to be placed from a hazard zone
3.29
sheet-folding machine
apparatus to cut, perforate and/or crease single or multiple folds in single sheets of paper
3.30
single-cycle device
mechanism that ensures that only one cutting cycle occurs for each manual activation or automatic cut
Note 1 to entry: See anti-repeat device (3.1).
3.31
stored energy
potential energy that can be released without actuation of the machine drive or controls
4 Significant hazards
The list of significant hazards covered in this document is given in Annex B.
5 Guarding of significant hazards
5.1 General
Guarding, consistent with operation of the machine, shall be provided in those areas where it
is recognized that operators are exposed to significant hazards. The guarding requirements of
ISO 12643-1:2023 apply.
ISO 12643-3:2023(E)
Binding and finishing equipment and systems conforms with the requirements of ISO 12643-1:2023 as
far as not modified or replaced by the requirements of this document.
5.2 Interlocks
5.2.1 Interlocking with guard locking
Interlocking guards shall be designed so that the sensor (interlock) shall be activated within the limits
specified in Table 1, depending on the distance to the hazard. Otherwise, guard locking shall be utilized.
Interlocking with guard locking is also required where the hazardous movement cannot be stopped in
10 s or less after actuation of the position detector.
Table 1 — Requirements for interlocking guards without guard locking
a a
Safety distance , L , between guard Maximum opening , L , of the guard
sr g
opening and hazard point while the detector changes its state
mm mm
<80 ≤30
≥80 and <500 ≤40
≥500 and <850 ≤80
≥850 ≤160
a
See Figure 1 for location of the measurements.

a) Motor running b) Motor stopped
Key
1 failsafe limit switch
2 guard closed
3 motor
4 guard open
L safety distance
sr
L maximum opening
g
Figure 1 — Distances related to requirements for guard locking
ISO 12643-3:2023(E)
5.2.2 Exception for machine motion at inching speed
If a machine is operating at inching speed and under conditions defined in ISO 12643-1:2023, 5.3.6,
motion may continue when an interlocked guard is opened.
5.2.3 Exception for machine motion at production speed
This exception shall apply only to the specific machines identified in this document and does not apply
to all equipment.
There might be parts of the equipment that cannot be observed or adjusted with the guard closed
and need to be accessed by an authorized person with an interlocked guard open. Under these
circumstances, the following alternative safety measures shall be taken.
a) A mechanical key lock shall be provided adjacent to the access area. There shall be only one key for
this lock. The key for this lock shall be accessible only by an authorized person.
b) The key lock shall operate as a hold-to-run device as follows:
1) inserting the key shall initiate a timer that has a maximum setting of 2 min;
2) turning the key shall override the guard interlock of only that guard, up to the preset time
limit;
3) as long as the key is held in the turned position, the guard may be opened with machine motion
at production speed until such time as the timer reaches the preset time limit;
4) when the key is released, it shall automatically return to the neutral position and the guard
interlock shall be automatically reactivated;
5) if the key remains in the lock for a period longer than the preset time limit (which shall not
exceed 2 min), the interlock on the guard shall be reactivated automatically and the equipment
safety system shall stop machine motion.
c) The bypassing means shall be in accordance with at least ISO 13849-1:2023, PL d or IEC 62061:2021,
SIL 2.
d) When adjustments are necessary, they shall be performed from outside the hazardous area.
e) A safety sign identifying the possible existing hazards with the guard open shall be provided
adjacent to the lock. The label shall clearly indicate that, when the key is in the lock, the adjacent
guard is overridden.
If a machine is equipped with this alternative safety measure, information regarding its safe use shall
be contained in the instruction handbook.
5.3 Guarding of hoppers and hopper feeders
5.3.1 Manually loaded hoppers
On machines using manually loaded hoppers, the hazard points on the separating elements of the
hopper feeder shall be safeguarded in accordance with 5.3.4. The exception defined in 5.2.2 can be
applied to the hopper feeder, if necessary.
5.3.2 Guarding of automatically fed hoppers
On automatically fed hoppers where manual intervention during normal operation is not required and
the material used makes access difficult, tunnel-type guards arranged with a safety distance of 550 mm
from the nearest hazard point are considered adequate.
The exception defined in 5.2.2 can be applied to the hopper feeder, if necessary.
ISO 12643-3:2023(E)
5.3.3 Protection of unused hoppers and hopper feeders
For hoppers that are not used and cannot be stopped, blanking boards shall be provided to safeguard
the hazard points at the separating elements.
5.3.4 Separating elements on hopper feeders
The hazard points on separating elements outside the sidelays on feeders shall be safeguarded for every
format size used.
NOTE This safeguarding can be achieved, for example, by using accordion-type bellows or by the use of
additional guards.
For hazard points within sidelays, the residual pile monitoring shall be used as a safety device.
Measures for fault detection [diagnostic coverage DC)] and to prevent manipulation of the safety device
are required.
5.4 Guarding on binding and finishing machines
5.4.1 Hand-fed riveting, eyeletting and attaching machines
Hazard points between tools on riveting, eyeletting and attaching machines either shall be prevented
by design or shall be safeguarded.
Means to satisfy this requirement include, but are not limited to, the following:
— observing a maximum distance of 4 mm between the tools in the open position;
— ensuring that the closing force of the movable tool is less than 50 N; a stronger closing force is
allowed to become effective only after a sensing device has confirmed that no part of a human
body is located between the two tools. The control system shall satisfy the requirements of
ISO 12643-1:2023, 5.10.1.2.
NOTE The sensing device function, for example, can be based on the fact that the workpiece and a body part
have different electrical resistances or different thicknesses.
Hazard points are safeguarded if guards are provided in accordance with ISO 13857:2019 or the
machine can be started only by two-hand control.
For machines that are not guarded by a fixed or movable guard, a workpiece support shall be provided,
and two-hand controls meeting the requirements of ISO 12643-1:2023 shall be used. If the workpiece
needs to be held by hand outside the hazard zone, a hold-to-run control shall be provided for starting
the machine instead of the two-hand control.
5.4.2 Hand-fed flat- and saddle-stitching machines
Adjustable guards shall be provided on flat-stitching, saddle-stitching and combination-stitching
machines for operational reasons (see Figure 2 and Figure 3). Instructions that describe the safe
adjustment of the guards in a clear and easily understandable format shall be provided on the machine.
NOTE This marking requirement is satisfied, for example, by providing safety signs that illustrate the safety
distances required for the various stitching thicknesses by means of sketches and measurements.
On combination-stitching machines in the saddle-stitching mode, the guard for the upper tool shall
extend to the height of the upper edge of the lower tool (upper edge of the saddle) and shall enclose the
upper tool to prevent inadvertent access (see Figure 3).
Guarding can be by either two separate guards or a combined reversible guard. Combined reversible
guards shall be suitable for saddle stitching as well as for flat stitching.
ISO 12643-3:2023(E)
Key
1 upper tool
2 guard
Figure 2 — Flat stitcher
Key
1 upper edge of saddle
2 guard
3 workpiece
Figure 3 —
...