SIST ISO 12643-1:2010

INTERNATIONAL ISO
STANDARD 12643-1
Second edition
2009-12-15
Graphic technology — Safety
requirements for graphic technology
equipment and systems —
Part 1:
General requirements
Technologie graphique — Exigences de sécurité pour les systèmes et
l'équipement de technologie graphique —
Partie 1: Exigences générales
Reference number
©
ISO 2009
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©  ISO 2009
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ii © ISO 2009 – All rights reserved

Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.2
3 Terms and definitions .4
4 Conformity with this part of ISO 12643 .11
5 Risk assessment .11
6 Guarding of significant hazards .12
6.1 General .12
6.2 Guards .12
6.3 In-running (in-going) nips.16
6.4 Guarding in-running nips .17
6.5 Interlocks.20
6.6 Hold-to-run controls.23
6.7 Other safeguarding measures .24
6.8 Guarding reel unwinding, rewinding and transport devices .25
6.9 Threading of web material.28
6.10 Feeding units, delivery units (pile lifting and lowering devices).28
7 Requirements for protection against other hazards.33
7.1 General .33
7.2 Fire and explosion.33
7.3 Electrical equipment .34
7.4 Working platforms, access stairs, passageways and raised workplaces.36
7.5 Stability.39
7.6 High contact temperatures.40
7.7 Noise.41
7.8 Radiation hazards.41
7.9 Stationary knives.42
7.10 Rotary tools.42
7.11 Transport and storage of hazardous tools .42
7.12 Protruding machine parts.42
7.13 Handwheels and cranks.42
7.14 Routine handling of heavy machine parts.43
7.15 Oxidizers, incinerators or thermal cleaning plants.43
7.16 Protection against crushing and shearing hazards.43
7.17 Contact with hazardous substances .44
8 Release from hazardous situation.45
9 Control zones.45
9.1 General .45
9.2 Purpose of zone configuration .45
9.3 Motion-control stations in control zones.45
10 Controls.46
10.1 General .46
10.2 Manual control devices.46
10.3 Initiating machine motion.54
10.4 Hold-to-run controls.54
10.5 Two-hand controls .55
10.6 Electro-sensitive protective devices .55
10.7 Pressure-sensitive mats, pressure-sensitive bumpers, trip devices.55
10.8 Braking devices and clutches .56
11 Control stations .57
11.1 Motion-control stations.57
11.2 Remote access.58
12 Control systems.61
12.1 Hydraulic, pneumatic, electric and electronic control systems .61
12.2 Electronic adjustable speed drives.62
12.3 Cut-off of main energy source.62
12.4 Residual-pile monitoring systems .62
12.5 Unobserved unguarded hazard zones.63
12.6 Cableless controls.63
12.7 Additional requirements for hand-fed machines.63
13 Ergonomics and labelling of indicators and actuators.64
14 Signals and warning devices.64
14.1 General.64
14.2 Audible warning system .64
14.3 Area-light warning system.67
15 Safety signs and labels .67
15.1 General.67
15.2 Specific requirements for machine markings.68
16 Contents of instruction handbook.68
16.1 General.68
16.2 Machines using flammable liquids .69
16.3 Machines with cutting knives.69
16.4 Handling heavy machine parts.69
16.5 Machines with automatic paper loading .70
16.6 Residual risks using ESPDs .70
16.7 Pile turners and reel turners.70
16.8 Pile carriers .70
16.9 Residual risk for hold-to-run speeds of above 10 m/min under two-hand control.70
16.10 Use of stroboscopes .70
Annex A (informative) Risk analysis relating to the pitch angle of access stairs .71
Annex B (informative) Noise .73
Annex C (normative) Area-light warning system.75
Annex D (informative) Example layout of instruction handbooks .77
Bibliography .79

iv © ISO 2009 – All rights reserved

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 12643-1 was prepared by Technical Committee ISO/TC 130, Graphic technology.
This second edition of ISO 12643-1 constitutes a technical revision of the first edition (ISO 12643-1:2007).
Significant changes incorporated into this second edition include, but are not limited to, the following:
⎯ addition of prepress systems, converting equipment and systems, and stand-alone platen presses to the
Scope;
⎯ requirements for performance levels (PL) or safety integrity levels (SIL) as defined in the current version
of ISO 13849-1 and IEC 62061, respectively;
⎯ additional requirements for fixed guards;
⎯ additional requirements for interlocking with guard locking;
⎯ additional requirements for hydraulic, pneumatic, electric and electronic control systems.
It is the intent of ISO/TC 130 that both the first and second editions of ISO 12643-1 be applicable until
2010-12-31. ISO 12643-1:2007 is thus provisionally retained until this date.
As from 2011-01-01, ISO 12643-1:2009 will cancel and replace ISO 12643-1:2007. Accordingly, as from
2011-01-01, only ISO 12643-1:2009 will be applicable to new equipment manufactured.
ISO 12643 consists of the following parts, under the general title Graphic technology — Safety requirements
for graphic technology equipment and systems:
⎯ Part 1: General requirements
⎯ Part 2: Prepress and press equipment and systems
⎯ Part 3: Binding and finishing equipment and systems
⎯ Part 4: Converting equipment and systems
⎯ Part 5: Stand-alone platen presses
Requirements specific to printing prepress and press equipment and systems, binding and finishing
equipment and systems, converting equipment and systems and stand-alone platen presses that are not
included in this part of ISO 12643, are given in subsequent parts of ISO 12643 that contain additional
requirements specific to that type of equipment.
Introduction
During the development of this part of ISO 12643, existing relevant standards of other countries were taken
into consideration. An effort has been made to take into consideration the requirements of many countries,
recognizing that national standards or laws may dictate national requirements. In cases where it was known
that there is a national requirement that differs from this part of ISO 12643, that has been noted.
This part of ISO 12643 was developed to harmonize the requirements of the following U.S. and European
safety standards:
⎯ ANSI B65.1, Graphic technology — Safety standard — Printing press systems;
⎯ ANSI B65.2, Graphic technology — Safety requirements for binding and finishing systems and
equipment;
⎯ ANSI B65.3, Safety standard — Guillotine paper cutters, mill trimmers, and integral handling equipment;
⎯ ANSI B65.4, Safety standard — Three-knife trimmers, including rotary, and single- and multiple-knife
trimmers;
⎯ ANSI B65.5, Safety standard — Stand-alone platen presses
⎯ EN 1010-1, Safety of machinery — Safety requirements for the design and construction of printing and
paper converting machines — Part 1: Common requirements;
⎯ EN 1010-2, Safety of machinery — Safety requirements for the design and construction of printing and
paper converting machines — Part 2: Printing and varnishing machines including pre-press machinery;
⎯ EN 1010-3, Safety of machinery — Safety requirements for the design and construction of printing and
paper converting machines — Part 3: Cutting machines;
⎯ EN 1010-4, Safety of machinery — Safety requirements for the design and construction of printing and
paper converting machines — Part 4: Bookbinding, paper converting and finishing machines.

vi © ISO 2009 – All rights reserved

INTERNATIONAL STANDARD ISO 12643-1:2009(E)

Graphic technology — Safety requirements for graphic
technology equipment and systems —
Part 1:
General requirements
1 Scope
This part of ISO 12643 provides safety specifications for the design and construction of new equipment used
in prepress systems, printing press systems, binding and finishing systems, converting systems and
stand-alone platen presses. It is applicable to equipment used in stand-alone mode, or in combination with
other machines, including ancillary equipment, in which all the machine actuators (e.g. drives) of the
equipment are controlled by the same control system.
The requirements given in this part of ISO 12643 are applicable to the equipment covered by all parts of
ISO 12643, unless otherwise noted. This part of ISO 12643 is intended to be used in conjunction with the
applicable part of ISO 12643 that contains additional requirements specific to a particular type of equipment.
This part of ISO 12643 addresses recognized significant hazards specific to equipment and systems in the
following areas:
⎯ mechanical;
⎯ electrical;
⎯ slipping, tripping, falling;
⎯ ergonomics;
⎯ noise;
⎯ UV and laser radiation;
⎯ fire and explosion;
⎯ thermal;
⎯ other types of emissions [e.g. ozone, ink mist, volatile organic compounds (VOCs), etc.].
The safety principles established in this part of ISO 12643 can also be applicable to the design of equipment
within areas of technology that are not specified in ISO 12643.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety signs
in workplaces and public areas
ISO 3864-2, Graphical symbols — Safety colours and safety signs — Part 2: Design principles for product
safety labels
ISO 3864-3, Graphical symbols — Safety colours and safety signs — Part 3: Design principles for graphical
symbols for use in safety signs
ISO 7010, Graphical symbols — Safety colours and safety signs — Safety signs used in workplaces and
public areas
ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and
conductivity
ISO 11553-1, Safety of machinery — Laser processing machines — Part 1: General safety requirements
ISO/TR 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning
ISO 11689, Acoustics — Procedure for the comparison of noise-emission data for machinery and equipment
ISO 12100-1, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic
terminology, methodology
ISO 12100-2, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical
principles
ISO 12643-2, Graphic technology — Safety requirements for graphic technology equipment and systems —
Part 2: Prepress and press equipment and systems
ISO 12643-3, Graphic technology — Safety requirements for graphic technology equipment and systems —
Part 3: Binding and finishing equipment and systems
ISO 12643-4, Graphic technology — Safety requirements for graphic technology equipment and systems —
Part 4: Converting equipment and systems
ISO 12643-5, Graphic technology — Safety requirements for graphic technology equipment and systems —
Part 5: Stand-alone platen presses
ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human responses to
contact with surfaces — Part 1: Hot surfaces
ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for
design
ISO 13850, Safety of machinery — Emergency stop — Principles for design
ISO 13851, Safety of machinery — Two-hand control devices — Functional aspects and design principles
ISO 13854, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
2 © ISO 2009 – All rights reserved

ISO 13855, Safety of machinery — Positioning of protective equipment with respect to the approach speeds of
parts of the human body
ISO 13856-1, Safety of machinery — Pressure-sensitive protective devices — Part 1: General principles for
design and testing of pressure-sensitive mats and pressure-sensitive floors
ISO 13857, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 14119:1998, Safety of machinery — Interlocking devices associated with guards — Principles for design
and selection
ISO 14120, Safety of machinery — Guards — General requirements for the design and construction of fixed
and movable guards
ISO 14121-1, Safety of machinery — Risk assessment — Part 1: Principles
ISO 14122-1, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of fixed
means of access between two levels
ISO 14122-2, Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms
and walkways
ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders
and guard-rails
ISO/TR 15847, Graphic technology — Graphical symbols for printing press systems and finishing systems,
including related auxiliary equipment
IEC 60079-1, Explosive atmospheres — Part 1: Equipment protection by flameproof enclosures “d”
IEC 60079-2, Explosive atmospheres — Part 2: Equipment protection by pressurized enclosures “p”
IEC 60079-5, Explosive atmospheres — Part 5: Equipment protection by powder filling “q”
IEC 60079-6, Explosive atmospheres — Part 6: Equipment protection by oil immersion “o”
IEC 60079-7, Explosive atmospheres — Part 7: Equipment protection by increased safety “e”
IEC 60079-11, Explosive atmospheres — Part 11: Equipment protection by intrinsic safety “i”
IEC 60079-14, Explosive atmospheres — Part 14: Electrical installations design, selection and erection
IEC 60079-18, Explosive atmospheres — Part 18: Equipment protection by encapsulation “m”
IEC 60204-1, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
IEC 60825-1, Safety of laser products — Part 1: Equipment classification and requirements
IEC 60947-2, Low-voltage switchgear and controlgear — Part 2: Circuit-breakers
IEC 60947-3, Low-voltage switchgear and controlgear — Part 3: Switches, disconnectors, switch-
disconnectors and fuse-combination units
IEC 60947-5-1, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching
elements — Electromechanical control circuit devices
IEC 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use —
Part 1: General requirements
IEC 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,
acoustic and tactile signals
IEC 61310-2, Safety of machinery — Indication, marking and actuation — Part 2: Requirements for marking
IEC 61310-3, Safety of machinery — Indication, marking and actuation — Part 3: Requirements for the
location and operation of actuators
IEC 61496-1, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements
and tests
IEC 61496-2, Safety of machinery — Electro-sensitive protective equipment — Part 2: Particular requirements
for equipment using active opto-electronic protective devices (AOPDs)
IEC 62061, Safety of machinery — Functional safety of safety-related electrical, electronic and programmable
electronic control systems
EN 1127-1, Explosive atmosphere — Explosion prevention and protection — Part 1: Basic concepts and
methodology
EN 1760-2, Safety of machinery — Pressure sensitive protective devices — Part 2: General principles for the
design and testing of pressure sensitive edges and pressure sensitive bars
EN 12198-1:2000, Safety of machinery — Assessment and reduction of risks arising from radiation emitted by
machinery — Part 1: General principles
EN 13023, Noise measurement methods for printing, paper converting, paper making machines and auxiliary
equipment — Accuracy grades 2 and 3
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 13849-1 and the following apply.
3.1
actuator
part of the actuating system to which an external actuating force is applied
[22]
[IEV 441-15-22]
NOTE 1 The actuator can take the form of a handle, knob, pushbutton, roller, plunger, trip wire, pressure-sensitive mat,
etc.
NOTE 2 There are some actuating means that do not require an external actuating force, but only an action; e.g. light
beams. Such actuating means are not considered to be actuators.
3.2
armed condition
machine status in which machine motion can be automatically initiated
NOTE Zero speed (3.68) is considered to be an armed condition.
3.3
audible alarm
horn, bell or other distinctive audible warning device that sounds to indicate impending machine motion
4 © ISO 2009 – All rights reserved

3.4
authorized person
person identified by management as having special training or designated to act in specified situations
NOTE Examples of “specified situations” include:
⎯ special tasks to be performed;
⎯ the function of the adjustments in the work zone;
⎯ proper operation of adjustments and controls;
⎯ all types of hazards in the area where the task is to be performed;
⎯ the application of equivalent, alternative protection to perform the task;
⎯ improper actions that can cause injury and the consequences of those improper actions.
3.5
auxiliary device
mechanism or machine, either built-in or attached, used for the production process
3.6
barrier guard
guard (3.21) that reduces or prevents physical access to a hazard zone by closing off access to an area
containing one or more hazards
EXAMPLE A perimeter fence or tunnel guard.
3.7
binding and finishing system
combination of machines functioning in an integrated configuration to turn an incomplete printed product into a
finished product by means of one or more processes, such as cutting, folding, binding, stitching, gluing,
wrapping, etc.
3.8
Category 0 stop
uncontrolled stop
stopping by immediate removal of power to the machine actuators (3.29)
[IEC 60204-1:2009, 9.2.2]
3.9
Category 1 stop
controlled stop with power available to the machine actuators (3.29) to achieve the stop and then removal of
power when the stop is achieved
[IEC 60204-1:2009, 9.2.2]
3.10
Category 2 stop
controlled stop with power left available to the machine actuators (3.29)
[IEC 60204-1:2009, 9.2.2]
3.11
continuous run
machine motion at a steady speed initiated by a momentary-contact control
3.12
control station
defined location containing one or more controls
3.13
control zone
control configuration of single or multiple machine motions using the same control devices
NOTE See Clause 9.
3.14
drive
mechanism, divided into the following two general categories, which causes a machine or any of its elements
to move:
⎯ drives with no stored energy, which include, but are not limited to, direct-motor drives;
⎯ drives having stored energy, which include, but are not limited to, motor-flywheel-clutch drives and
hydraulic-pneumatic drives
3.15
electrical hazard
source of potential injury or death from electric shock or burn
NOTE Adapted from ISO 12100-1:2003.
3.16
electro-sensitive protective device
ESPD
apparatus that detects the presence of a person or part of a person or object in a defined area, using any
detection means, including, but not limited to, photoelectric, light screen, ultrasonic, etc.
3.17
emergency stop device
manually actuated control used to initiate an emergency stop function (3.18)
NOTE Adapted from ISO 13850:1996.
3.18
emergency stop function
mechanism activated by a single human motion and intended to halt machine activity in order to avoid injury to
persons, damage to machinery or damage to work in progress
3.19
exposing device
machinery used for creating images by exposing photo-sensitive material such as printing plates or printing
formes
3.20
fixed guard
guard (3.21) that is securely affixed by fasteners that require a tool(s) to remove in order to gain access to an
area with a significant hazard
3.21
guard
physical barrier that restricts access to a significant hazard
3.22
hazard point
location of a hazard on a machine where a person can be injured
6 © ISO 2009 – All rights reserved

3.23
hazard zone
any area within and/or around machinery in which a person is exposed to risk of injury or damage to health
NOTE Adapted from ISO 12100-1:2003.
3.24
hold-to-run control
control that starts and maintains machine motion only as long as the control is activated
3.25
inch
jog
〈operation of machinery〉 machine motion requiring maintained activation engagement of a hold-to-run control
and which will continue until the control is released or until a pre-determined displacement (limited inch) has
been reached
3.26
infrequently used workplace
area in which an activity is carried out, such as observation, make-ready, jam clearing, minor servicing,
crossing inserting hoppers or conveyer belts, etc., that is routine, repetitive, integral to (but not necessarily
during) production, and is done only on an occasional basis
3.27
in-running nip
in-going nip
area created either by two rotating components that are rotating inward, or by one component rotating toward
an adjacent surface
NOTE See Figure 3 for examples of in-running nips.
3.28
interlock
〈for safeguarding〉 arrangement that interconnects guard(s) or device(s) with the control system and/or all or
part of the electrical energy distributed to the machine
[IEC 60204-1:2009, definition 3.32]
3.29
machine actuator
power mechanism used to affect motion of the machine
[IEC 60204-1:2009, definition 3.34]
3.30
maintained-contact control
control that remains in an open or closed state after its activation
3.31
maintenance
operation(s) required to ensure that the machine remains in acceptable operating condition and that is/are
usually performed when the machine is not available for production
NOTE Maintenance (for example, repairing or replacing broken, worn or damaged parts; performing lubrication;
preventive servicing) is normally performed by qualified maintenance personnel, or operators, who have been trained
about the types of hazards in the area in which their tasks are to be performed and about how these hazards can be
avoided. Such maintenance is generally performed with energy isolated, when possible.
3.32
make-ready
tasks preceding a production run, such as adjusting ink controls for proper colour, plate alignment for proper
registration, adjusting pressures, measurement with quality control devices, etc.
3.33
manual control device
mechanism comprising part of the actuating system to which a manual action is applied
[22]
[IEV 441-15-22]
3.34
manually fed
substrate is placed into and/or removed from the machine by hand
3.35
mechanical hazard
source of potential injury to a person created by motion of machinery, components or material
EXAMPLES Crushing and shearing points; trapping points; in-running nips; cutting, punching and impact points; gear,
chain and worm drives; V-belt, flat belt, cord and rope drives; pulling and supporting elements on continuous conveyors;
spoke wheels and fly wheels; shafts and shaft ends; rollers; slides; push rods and similar parts, tools and clamping
devices.
3.36
momentary-contact control
control that is opened or closed only during its actuation
3.37
motion control
control that initiates machine movement or movement at zero speed (3.68), or places the machine in the
armed condition (3.2)
3.38
motion-control station
station that contains a motion control (3.37)
3.39
motion zone
area defined by any machine component, or group of machine components, which is driven directly by the
system drive motor(s) or machine actuator(s) (3.29), or indirectly by other means
3.40
movable control station
control station that is permanently wired to the equipment, but which can be moved within a range limited by
the length of the attached cable
3.41
movable guard
guard (3.21) that does not require a tool to move or remove it to gain access to a significant hazard
3.42
nip guard
guard (3.21) located at an in-going nip
EXAMPLES Nip bar, finger bar, finger guard.
8 © ISO 2009 – All rights reserved

3.43
normal operation
usual functioning and conditions that exist during set-up, make-ready, production and minor servicing,
adjusting and cleaning performed by operators, but not including maintenance (3.31) operations
3.44
operating position
location where normal functions (make-ready and other routine, repetitive tasks) requiring control of the main
drive motor(s) are performed
3.45
permissive period
time interval during which machine motion can be initiated
NOTE See 14.2.3.
3.46
personnel warning light
red or green light used to indicate the ready, running and safe conditions of the machine relative to personnel
safety
NOTE These lights are not the same as machine status lights (3.60).
3.47
portable control station
control station that can be disconnected from one location, moved to another location and be reconnected
NOTE This is not the same as a remote control (3.52).
3.48
positive mechanical action
linkage of one component with another component such that movement of the former inevitably compels
movement of the latter, either by direct contact or by a rigid connection
NOTE 1 This definition also applies to a component that prevents any movement of another component by virtue of its
presence.
NOTE 2 When the movement of one mechanical component simply allows another component to move freely (e.g. by
gravity, spring force, etc.), there is no positive mechanical action of the former component on the latter.
3.49
positive opening
contact separation as the direct result of a specified movement of the actuator (3.1) through non-resilient
members, e.g. those not dependent on springs
3.50
raised workplace
area where functions are regularly performed, and are at least 0,5 m above access level
3.51
ready condition
status of a machine in which motion can be initiated by the operator
3.52
remote control
access connection to one or more control stations of a machine by use of an external communication link
NOTE This is not the same as portable control station (3.47).
3.53
routine and regular access
repetitive access to a hazard point (3.22) that is required during normal production activity
3.54
safe condition
machine status in which movement of the main drive motor(s) (prime mover) of the motion zone is prevented,
which may apply to the entire machine or to one or more motion zones, and which exists only when one or
more stop/safe or emergency stop control(s) is/are activated
3.55
safety distance
minimum distance a protective device is required to be placed from a hazard zone (3.23)
[ISO 13857:2008, definition 3.2]
3.56
separating element
part on feeders of sheets, blanks or similar materials that separates the individual sheets, blanks, etc.
3.57
sheet-fed
substrate is fed in separate sheets, either manually or mechanically
3.58
significant hazard
potential source of severe or disabling injury or death
3.59
smooth cylinder
smooth roller
elongated body, solid or hollow, with a circular cross-section having a smooth surface with either of the
following:
a) grooves no more than 4 mm deep (measured in the radial direction) and no more than 8 mm wide
(measured in the circumferential direction), with no sharp or cutting edges (see Figure 1); or
b) grooves no more than 4 mm wide (measured in the circumferential direction), with no sharp or cutting
edges
NOTE “Cylinders” includes plate cylinders, blanket cylinders, impression cylinders, etc. Ink rollers, dampening water
rollers or distribution drums are not considered to be cylinders as defined in this part of ISO 12643.
Dimensions in millimetres
Figure 1 — Smooth roller/cylinder
10 © ISO 2009 – All rights reserved

3.60
status light
light that indicates machine status or machine process condition
NOTE Status lights are not the same as personnel warning lights (3.46).
3.61
tool
implement, such as a key or wrench, designed to operate a fastener
NOTE An item such as a coin or fingernail file is not considered to be a tool.
3.62
trip device
protective device that activates the interlocking safety system of the machine
3.63
trip nip bar
movable protective bar located at an in-running nip which, when pushed, activates the interlocked safety
system of the machine
3.64
two-hand control
safety device that consists of two manual control devices that must be operated simultaneously by a single
operator to initiate potentially hazardous machine motion
3.65
warning period
time interval during which machine motion is prevented and a warning is given to personnel that machine
motion is about to occur
3.66
web-fed
substrate is fed from a roll or a pack of continuous stock
3.67
wireless control
transmission of commands and signals between a machine-control system and the motion-control station(s)
using means other than a physical connection
3.68
zero speed
condition of machine movement in which the drive control system is actively holding the machine at a position
and while machine movement is not discernible, machine movement can be initiated without warning
NOTE Zero speed is considered to be an armed condition (3.2).
4 Conformity with this part of ISO 12643
In order to claim conformity with this part of ISO 12643, all equipment manufactured as of 2011-01-01 shall be
in accordance with this second edition of ISO 12643-1 rather than ISO 12643-1:2007.
5 Risk assessment
Risk assessment on machinery covered by all parts of ISO 12643 shall be conducted in accordance with
ISO 12100-1, ISO 12100-2 and ISO 14121-1.
6 Guarding of significant hazards
6.1 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. Exposure to significant hazards is not considered to exist if,
during normal operation, the distance to the hazard complies with those specified in ISO 13857. Machinery
shall be designed using the risk assessment process of ISO 14121-1 and the principles of ISO 12100-1 and
ISO 12100-2 for hazards, and the relevant parts of ISO 12643 for significant hazards.
Significant hazards vary from machine to machine. It is important that each machine be evaluated to
determine what hazards might exist and that shall be guarded.
Machines should be designed to allow normal production operations such as make-ready, wash-up,
operator-performed maintenance or troubleshooting without machine motion. Where machine motion is
required to perform these functions, guards and safety devices shall provide protection against hazards.
These operations shall be carried out using a hold-to-run device as specified in this part of ISO 12643, and
specified in the requirements for hold-to-run controls defined in ISO 12643-2 for prepress and press
equipment and systems, ISO 12643-3 for binding and finishing equipment and systems, ISO 12643-4 for
converting equipment and systems, or ISO 12643-5 for stand-alone platen presses.
Where moving components or product flow require surveillance, equipment shall be designed to allow the
needed visibility and to allow adjustments, if needed, to equipment operation with the guards remaining closed.
EXAMPLES A transparent guard or remote viewing system.
6.2 Guards
6.2.1 Guard types and travel
6.2.1.1 Type of guards
For the purpose of this part of ISO 12643, there are two types of guards, fixed
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