SIST EN 930:2000+A2:2009
(Main)Footwear, leather and imitation leather goods manufacturing machines - Roughing, scouring, polishing and trimming machines - Safety requirements
Footwear, leather and imitation leather goods manufacturing machines - Roughing, scouring, polishing and trimming machines - Safety requirements
1.1 This standard applies to the following machines which are intended to work material for the manufacture of footwear:
- Automatic and manual roughing, scouring and polishing machines;
- Automatic and manual edge contour trimming machines.
1.2 This standard does not apply to modular shoe repair machines.
1.3 This standard specifies safety requirements for design, construction and operation.
It takes account of intended use, foreseeable misuse, component and system failure.
1.4 This standard covers all hazards relevant to the footwear, leather and imitation leather goods manufacturing industries.
The use of machines within the scope of this standard in different industries may give rise to hazards which were not taken into account at the time of its preparation.
1.5 This document is not applicable to roughing, scouring, polishing and trimming machines which are manufactured before the date of its publication as EN.
Maschinen zur Herstellung von Schuhen, Leder- und Kunstlederwaren - Aufrauh-, Ausglas-, Polier- und Kantenbearbeitungsmaschinen - Sicherheitsanforderungen
Machines pour la fabrication de chaussures et d'articles en cuir et matériaux similaires - Machines à carder, à verrer, à polir et à fraiser - Prescriptions de sécurité
1.1 La présente norme s'applique aux machines indiquées ci-dessous qui sont destinées à travailler les matériaux employés pour la fabrication de chaussures et d'articles chaussants :
- machines automatiques et manuelles à carder, poncer et lustrer ;
- machines automatiques et manuelles à rafraîchir à bord (fraiser).
1.2 La présente norme ne s'applique pas aux machines modulaires pour la réparation de chaussures.
1.3 La présente norme spécifie les prescriptions de sécurité requises pour la conception, la fabrication et le fonctionnement.
Elle prend en considération l'utilisation normale, les mauvais usages prévisibles, les défaillances des composants et du système.
1.4 La présente norme couvre tous les risques relatifs aux industries de fabrication de chaussures et articles chaussants en cuir et autres matériaux.
L'utilisation des machines mentionnées dans la présente norme dans des industries différentes peut causer des risques qui n'ont pas été pris en compte lors de son élaboration.
1.5 #Le présent document ne s’applique pas aux machines à carder, à verrer, à polir et à fraiser qui ont été fabriquées avant sa date de publication en tant qu’EN.$
Stroji za izdelavo obutve ter izdelkov iz usnja in njegovih imitacij - Stroji za grobo obdelavo, brušenje, loščenje in robljenje - Varnostne zahteve
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 930:2000+A2:2009
01-oktober-2009
6WURML]DL]GHODYRREXWYHWHUL]GHONRYL]XVQMDLQQMHJRYLKLPLWDFLM6WURML]DJURER
REGHODYREUXãHQMHORãþHQMHLQUREOMHQMH9DUQRVWQH]DKWHYH
Footwear, leather and imitation leather goods manufacturing machines - Roughing,
scouring, polishing and trimming machines - Safety requirements
Maschinen zur Herstellung von Schuhen, Leder- und Kunstlederwaren - Aufrauh-,
Ausglas-, Polier- und Kantenbearbeitungsmaschinen - Sicherheitsanforderungen
Machines pour la fabrication de chaussures et d'articles en cuir et matériaux similaires -
Machines à carder, à verrer, à polir et à fraiser - Prescriptions de sécurité
Ta slovenski standard je istoveten z: EN 930:1997+A2:2009
ICS:
59.140.40 Stroji in oprema za Machines and equipment for
proizvodnjo usnja in krzna leather and fur production
61.060 Obuvala Footwear
SIST EN 930:2000+A2:2009 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 930:2000+A2:2009
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SIST EN 930:2000+A2:2009
EUROPEAN STANDARD
EN 930:1997+A2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2009
ICS 59.140.40; 61.060 Supersedes EN 930:1997
English Version
Footwear, leather and imitation leather goods manufacturing
machines - Roughing, scouring, polishing and trimming
machines - Safety requirements
Machines pour la fabrication de chaussures et d'articles en Maschinen zur Herstellung von Schuhen, Leder- und
cuir et matériaux similaires - Machines à carder, à verrer, à Kunstlederwaren - Aufrauh-, Ausglas-, Polier- und
polir et à fraiser - Prescriptions de sécurité Kantenbearbeitungsmaschinen - Sicherheitsanforderungen
This European Standard was approved by CEN on 16 July 1997 and includes Amendment 1 approved by CEN on 16 August 2004, and
Amendment 2 approved by CEN on 16 July 2009.
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 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 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: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 930:1997+A2:2009: E
worldwide for CEN national Members.
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EN 930:1997+A2:2009 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .4
2 Normative references .4
3 ####Terms and definitions$$$$ .6
4 ####List of significant hazards$$$$ . 10
5 Safety requirements and/or measures . 20
6 Verification of the safety requirements and/or measures . 25
7 Information for use . 28
Annex A (normative) Interlocking guards. 31
Annex B (normative) Trip device . 33
Annex C (normative) Stop and release control device . 34
Annex D (normative) Well tried components and principles . 35
Annex E (informative) !!Noise Test Code for roughing and scouring machines$$ . 36
!! $$
Annex F (normative) !!!!Noise test code for trimming machines$$$$ . 40
Annex ZA (informative) ##Relationship between this European Standard and the Essential
##
Requirements of EU Directive 98/37/EC$$$$ . 45
Annex ZB (informative) ####Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC$$$$ . 46
Bibliography . 47
2
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EN 930:1997+A2:2009 (E)
Foreword
This document (EN 930:1997+A2:2009) has been prepared by Technical Committee CEN/TC 201 “Leather
and imitation leather goods and footwear manufacturing machinery - Safety”, the secretariat of which is held
by UNI.
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 February 2010, and conflicting national standards shall be withdrawn
at the latest by February 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 930:1997.
This document includes Amendment 1, approved by CEN on 2004-08-16 and Amendment 2, approved by
CEN on 2009-07-16.
The start and finish of text introduced or altered by amendment is indicated in the text by tags
!" and # $.
This European Standard 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 Annexes ZA and ZB, which are integral parts of this
document.$
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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.
3
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EN 930:1997+A2:2009 (E)
Introduction
#This document is a type C standard as stated in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are
covered are indicated in the scope of this document.
When provisions of this type C standard are different from those which are stated in type A or B standards, the
provisions of this type C standard take precedence over the provisions of the other standards, for machines
that have been designed and built according to the provisions of this type C standard.$
1 Scope
1.1 This standard applies to the following machines which are intended to work material for the manufacture
of footwear:
Automatic and manual roughing, scouring and polishing machines;
Automatic and manual edge contour trimming machines.
1.2 This standard does not apply to modular shoe repair machines.
1.3 This standard specifies safety requirements for design, construction and operation.
It takes account of intended use, foreseeable misuse, component and system failure.
1.4 This standard covers all hazards relevant to the footwear, leather and imitation leather goods
manufacturing industries.
The use of machines within the scope of this standard in different industries may give rise to hazards which
were not taken into account at the time of its preparation.
1.5 #This document is not applicable to roughing, scouring, polishing and trimming machines which are
manufactured before the date of its publication as EN.$
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.$
#deleted text$
EN 294:1992, Safety of machinery - Safety distance to prevent danger zones being reached by the upper
limbs
#deleted text$
4
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#EN 547-2, Safety of machinery - Human body measurements - Part 2: Principles for determining the
dimensions required for access openings$
#EN 574, Safety of machinery — Two-hand control devices — Functional aspects — Principles for
design$
EN 626-1:1994, Safety of machinery – Reduction of risks to health from hazardous substances emitted by
machinery – Part 1: Principles and specifications for machinery manufacturers
#EN 894-1, Safety of machinery — Ergonomics requirements for the design of displays and control
actuators —Part 1: General principles for human interactions with displays and control actuators$
#EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of
fixed and movable guards$
#deleted text$
EN 982:1996, Safety of machinery - Safety requirements for fluid power systems and their components -
Hydraulics
EN 983:1996, Safety of machinery - Safety requirements for fluid power systems and their components -
Pneumatics
#EN 999, Safety of machinery — The positioning of protective equipment in respect of approach speeds of
parts of the human body$
#deleted text$
#EN 1005-2, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery
and component parts of machinery$
#EN 1005-3, Safety of machinery — Human physical performance — Part 3: Recommended force limits for
machinery operation$
#EN 1037, Safety of machinery - Prevention of unexpected start-up$
#deleted text$
EN 1088:1995, Safety of machinery - Interlocking devices with or without guard locking – General principles
and provisions for design
#EN 1093-1, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 1:
Selection of test methods$
5
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#EN 1127-1:2007, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts
and methodology$
!EN 12545:2000, Footwear, leather and imitation leather goods manufacturing machines - Noise test code -
Common requirements"
!deleted text"
!EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1:1995)"
#deleted text$
#EN ISO 12100–1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1:
Basic terminology, methodology (ISO 12100-1:2003)$
#EN ISO 12100–2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2:
Technical principles (ISO 12100-2:2003)$
#EN ISO 13849-1, Safety of machinery - Safety-related parts of control systems - Part 1: General principles
for design (ISO 13849-1:2006)$
#EN ISO 13850, Safety of machinery - Emergency stop - Principles for design (ISO 13850:2006)$
#deleted text$
#EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General
requirements (IEC 60204-1:2005 (modified))$
#EN 60947-4-1, Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-starters —
Electromechanical contactors and motor-starters (IEC 60947-4-1:2000)$
#EN 60947-5-1, Low-voltage switchgear and control gear — Part 5-1: Control circuit devices and switching
elements — Electromechanical control circuit devices (IEC 60947-5-1:2003)$
#EN 61310-1, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual,
acoustic and tactile signals (IEC 61310-1:2007)$
#EN 61496-1, Safety of machinery — Electro-sensitive protective equipment — Part 1: General
requirements and tests (IEC 61496-1:2004, modified)$
#CLC/TS 61496-2, Safety of machinery - Electro-sensitive protective equipment - Particular requirements
for equipment using active optoelectronic protective devices (AOPDs) (IEC 61496-2:2006)$
3 ####Terms and definitions$$$$
#For the purposes of this document, the terms and definitions given in EN ISO 12100-1:2003 and the
following apply.$
3.1
roughing machine
a machine which transmits energy from a prime mover to a tool for the purpose of roughing surfaces of
material used in the manufacture of footwear, leather and imitation leather goods and other related
components prior to cementing
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Key
1 abrasive band
2 transporter belt
Figure 1 — Roughing machine
3.2
scouring machine
a machine which transmits energy from a prime mover to a tool for the purpose of removing layers of material
used in the manufacture of footwear, leather and imitation leather goods and other related components to
obtain a semi-finished surface
Key
1 abrasive band
2 transporter roller
Figure 2 — Scouring machine
7
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3.3
polishing and/or buffing machine
a machine which transmits energy from a prime mover to a tool for the purpose of removing or applying layers
of material used in the manufacture of footwear, leather and imitation leather goods and other related
components to obtain a finished surface
Key
1 abrasive band
2 drive shaft
Figure 3 — Polishing and/or buffing machine
3.4
trimming machine
a machine which transmits energy from a prime mover to a rotary tool for the purpose of trimming the edges of
material used in the manufacture of footwear, leather and imitation leather goods and other related
components
Key
1 plate clamp
2 trimming tools
3 mobile arm
Figure 4 — Trimming machine
8
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3.5
tool
the part of the machine which acts directly on the material to be worked and which carries out the roughing,
scouring, trimming or polishing action. It includes those tools defined in 3.5.1 to 3.5.7.
3.5.1
abrasive wheel
a wheel, cylinder, disc or cone which consists of abrasive particles held together by mineral, metallic or
organic bonds whether natural or artificial
3.5.2
abrasive disc
a disc of metal, wood, cloth, felt, rubber or paper having any surface consisting wholly or partly of abrasive
material
3.5.3
abrasive band
a continuous band of cloth, felt, rubber, paper or similar material the outside surface of which consists wholly
or partly of abrasive material
3.5.4
abrasive steel tool
a tool with a rotating surface to which removable tips are fitted. These tips have an abrasive action
3.5.5
rotary cutter
a tool, with a rotating surface, which has multiple cutting edges
3.5.6
rotary polishing brush or mop
a device used to polish or brighten the surface
3.5.7
metal rotary brush
a device made of metal wire used for roughing the surface of the material being worked
3.6 Material feeding and handling device
3.6.1
transporter roller(s)
a cylindrical device for feeding the material to be worked
3.6.2
transporter belt
a movable band-shaped device for feeding the material to be worked to the operating area and then removing
it
3.6.3
carriage
a mechanical feed device with or without clamps which has a reciprocating motion along guides
3.6.4
mobile arm
a handling device which may be adjusted to various positions in the operating area
3.7 Clamp, plate clamp
A device for holding the lasted shoe and/or components.
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3.8 Working area
The zone of a machine which includes:
a) The tool, where roughing, scouring, polishing and trimming takes place;
b) The loading area where loading takes place;
c) The operator's standing area.
3.9 Stop and release control
Device which stops the machine at any point in its cycle and returns the machine to rest.
4 ##List of significant hazards$$
## $$
4.1 #This clause contains all the significant hazards, hazardous situations and events, as far as they are
dealt with in this document, identified by risk assessment as significant for this type of machinery and which
require action to eliminate or reduce the risk.$
4.2 #The significant hazards at roughing, scouring, trimming and polishing machines are outlined in 4.3 to
4.9.$
The danger zones which give rise to mechanical hazards are illustrated in figures 5 to 10. The figures are
informative only.
Table 1 — ####List of significant hazards$$$$
Danger zone or source of hazard Type of hazard Zone Figure
4.3 Mechanical hazards
10
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Crushing and shearing A 5
4.3.1 The zone between clamps, parts of
the pincers and fixed machine
Cutting, severing, drawing-in and B 6
4.3.2 The rotary cutters or moving tools
trapping, entanglement
and guides
Drawing-in, trapping, crushing, impact, C 7
4.3.3 Material handling and feed devices,
entanglement
loading and clamping
Ejection of tool parts, friction and D 8
4.3.4 All abrasive rotary tools: wheel,
abrasion
disc, band, etc.
Ejection of the processed material E 9
4.3.5 Tool area
and/or of machine parts, impact
Entanglement, drawing-in and trapping F 10
4.3.6 Transmission machinery and drive
friction, impact
mechanism
(continued)
11
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DANGER ZONE A
Key
12
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EN 930:1997+A2:2009 (E)
1 abrasive band
2 plate clamp
3 mobile head
4 mobile arm
5 trimming tool
6 clamps
7 steel brush
8 self centering clamps
Figure 5 — Crushing and shearing hazard
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DANGER ZONE B
Key
5 trimming tool
Figure 6 — Cutting, severing, drawing-in and trapping, entanglement hazard
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DANGER ZONE C
Key
1 abrasive band
9 transporter belt
10 mobile hinged arm
11 carriage
12 transporter roller
13 transporter belt-rollers
15 mobile carriage
16 abrasive tool
17 rotative table
Figure 7 — Drawing-in, trapping, crushing, impact, entanglement hazard
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DANGER ZONE D
Key
16 abrasive tool
Figure 8 — Ejection of tool parts, friction and abrasion hazard
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DANGER ZONE E
Key
1 abrasive band
5 trimming tool
Figure 9 — Ejection of processed material, impact hazard
17
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EN 930:1997+A2:2009 (E)
DANGER ZONE F
Key
18 driven shaft
Figure 10 — Entanglement, drawing-in and trapping, friction, impact hazards
Table 1 – (continued)
Danger zone or source of hazard Type of hazard
4.4 Electrical hazard
Electrical contact, direct or indirect caused by: Electric shock, burns
component failure,
insulation failure,
incorrect design, installation or component
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Danger zone or source of hazard Type of hazard
specification of the electrical equipment.
4.5 Noise
Noise generated by: Hearing loss or interference with communication and
acoustic signals
the action of the tool on the material or
!Tinnitus, tiredness and stress"
component being worked,
hydraulic unit,
pneumatic equipment.
4.6 Emission of dusts and fumes
The action of the tool on the materials being worked Health, risk of occupational disease
can give rise to high levels of leather, rubber or
plastic dust emission which can be injurious to health
4.7 Fire
The ignition of dust created by the action of the tool Asphyxiation, burns
on the material being worked (for example leather
dust). Fire may occur with exhaust ventilation
systems attached to machines, particularly the
collector unit.
4.8 Functional disorder
Burns and injury from hot oil or tubing
High pressure ejection of fluid or ejection of a
part of a burst hydraulic component
Unexpected movement and process start-up
failure of energy supply,
Unexpected dangerous movements
failure of control system,
Unexpected dangerous movements
errors of fitting.
(continued)
Danger zone or source of hazard Type of hazard
4.9 Neglect of ergonomic principles
Excessive efforts (production rates too fast or slow on Stress
automatic machines)
Bad working posture Fatigue
Machine design incompatible with human anatomy Fatigue
(for example the height and size of working area)
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Danger zone or source of hazard Type of hazard
Poor control, layout and graphics Fatigue
5 Safety requirements and/or measures
5.1 General
#Machinery shall comply with the safety requirements and/or protective measures of this clause.
In addition, the machine shall be designed according to the principles of EN ISO 12100 for relevant but not
significant hazards which are not dealt with by this document.
For hazards which are to be reduced by the application of a type B-standard such as EN 294, EN ISO 13850,
EN 547, EN 60204-1 etc., the manufacturer shall carry out a risk assessment to establish the requirements of
the B-standards which are to be applied.$
5.2 Common requirements for all roughing, scouring, polishing and trimming machines
5.2.1 Mechanical equipment
5.2.1.1 Transmission machinery which gives rise to dangers shall be enclosed by fixed enclosing guards or
fencing in accordance with #EN 953$. Fencing shall be positioned in accordance with the distances of EN
294:1992.
5.2.1.2 Hazardous movement of machinery parts, tools and workpieces shall be safeguarded by fixed
enclosing guards, covers, fencing or trip devices unless other protective devices are specifically called for in
this standard.
Where these protective measures cannot be used, devices shall be provided which will stop hazardous
movement before the danger zone can be reached. Such devices include trip devices, trip bars and
electrosensitive protective devices (#See among others EN 61496-1 and CLC/TS 61496-2$).
5.2.1.3 Fixed enclosing guards, covers and fencing shall be designed in such a manner that fixing or
removal can only be achieved using a tool #, in accordance with 3.2, 3.9 and 3.10 of EN 953:1997.$
#deleted text$
#Fixing systems of fixed guards and fixed covers shall remain attached to these parts or to the machine
when the parts are removed.$
5.2.2 Electrical equipment
5.2.2.1 Electrical systems and equipment shall satisfy #EN 60204-1$ and #EN 60947-5-1$.
5.2.2.2 The operator controls and electrical controls which require adjustment for changing the working
process shall be located on the outside of switch cabinets.
5.2.3 Noise
!The methodology for low-noise design given in EN ISO 11688-1 shall be followed. Possible noise
reduction measures at the design stage are:"
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a) Reduction of vibration through the static and dynamic balancing of rotating parts;
b) Reduction of vibration within the machine by reducing both the mass of moving parts and their
acceleration;
c) Proper choice and design of transmission components (gears, pulleys, belts, bearings);
d) Design of the machine structures taking into consideration vibration damping, and avoidance of structural
resonance;
e) Fitting pneumatic exhaust silencers, damping of hydraulic circuits;
f) Reduction of impact noise caused by, for example, clutches, blades, rotating tools.
This list of noise reduction techniques is informative only and not meant to be complete. These measures are
recommended but not compulsory. Alternative measures with identical or higher efficacy can be used.
!NOTE EN ISO 11688-2 gives useful information on noise generation mechanisms in machinery
The criterion for assessing the efficiency of these measures is the actual noise emission values from the
machines of the same family and not the nature of the reduction measures themselves."
5.2.4 Material and substance emission
Roughing, scouring, trimming and polishing operations may result in the emission of fume, dust or gas liable
to be injurious to health. Machines shall be fitted with an extraction system forming an integral part of the
machine or fitted with means of connecting to an external extraction system. #Information shall be given in
accordance with 7.1 and 7.2 of EN 626-1:1994 (see also Clause 7). Guidance on the selection of testing
methods can be found in EN 1093-1.$
5.2.5 Fire
5.2.5.1 Machines shall be designed and constructed in accordance with #6.4 of EN 1127-1:2007$ to
prevent risk of fire caused by dust accumulations which may be ignited by machine overheating or sparks.
5.2.5.2 Zones of machines where dust accumulation could cause a fire hazard shall be easily accessible
by the operator without auxiliary equipment. This zone shall not contain danger points.
5.2.6 Functional disorders
5.2.6.1 To prevent high pressure ejection of fluid or ejection of a burst hydraulic component part the
hydraulic and pneumatic system shall satisfy #4.10 of EN ISO 12100-2:2003, EN 982 and EN 983.$
5.2.6.2 Devices shall be fitted, in accordance with #EN 1037$, which prevent uncontrolled dangerous
movements caused by irregularities, failures or unexpected reconnection of the power supply or when the
control circuit has been switched off.
5.2.6.3 Unless otherwise indicated in 5.3, safety related parts of the machine control system:
Shall have at least the same level of safety as the safeguarding used
and
#Shall as a minimum comply with performance level "c" as defined in
EN ISO 13849-1$
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The use of programmable electronic systems (PES) shall not reduce any level of safety laid down in this
standard. When a machine is fitted with a PES, safety related functions shall not rely solely on it. This
requirement is met by the use of:
An additional hardwired control system,
Or
Other provisions for redundancy.
5.2.7 Ergonomics
#The design shall be in accordance with the requirements of EN 547-2, EN 894-1, EN 1005-2 and EN 1005-
3.$
5.3 Requirements for specific machines
5.3.1 Hand roughing, scouring and polishing machines
5.3.1.1 The general design of guarding shall be such that the tool is enclosed to the greatest extent
possible, taking into consideration the nature of the tool and the type of work being carried out. In particular
the following shall apply:
5.3.1.2 #The tool shall be enclosed by a fixed guard in accordance with EN 953 and EN 294:1992,
Tables 1, 3 or 4 as relevant, except for that part that is necessarily exposed for the work process.$ Such
exposure shall not exceed 180˚ of arc and there shall be no access to inrunning nips formed between the tool
(e.g. abrasive band) and its drive rollers (See 4.3 and zone D of figure 8).
5.3.1.3 #If movable guards in accordance with 3.3 of EN 953:1997 have to be opened to allow access for
tool changing, such opening shall not permit access to dangerous moving parts. This shall be achieved either
by compliance with EN 294:1992, Tables 1
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