EN 1870-4:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 4: Mehrblattkreissägemaschinen für Längsschnit mit Handbeschickung und/oder HandentnahmeSécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 4 : Scies circulaires à déligner multi-lames à chargement et/ou déchargement manuelSafety of woodworking machines - Circular sawing machines - Part 4: Multi-blade rip sawing machines with manual loading and/or unloading79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-4:2012SIST EN 1870-4:2012en,fr01-julij-2012SIST EN 1870-4:2012SLOVENSKI
STANDARDSIST EN 1870-4:2002+A1:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-4
March 2012 ICS 79.120.10 Supersedes EN 1870-4:2001+A1:2009English Version
Safety of woodworking machines - Circular sawing machines - Part 4: Multiblade rip sawing machines with manual loading and/or unloading
Sécurité des machines pour le travail du bois - Machines à scies circulaires - Partie 4: Scies circulaires à déligner multilames à chargement et/ou déchargement manuel
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 4: Mehrblattkreissägemaschinen für Längsschnitt mit Handbeschickung und/oder Handentnahme This European Standard was approved by CEN on 21 January 2012.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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Dimensional tolerances of saw spindles . 57Annex B (normative)
Braking tests . 58B.1 Conditions for all tests . 58B.2 Tests . 58B.2.1 Un-braked run-down time . 58B.2.2 Braked run-down time . 58Annex C (normative)
Type test for anti-splinter system . 59C.1 General . 59C.2 Test method . 59C.2.1 Preliminary remarks . 59C.2.2 Test equipment . 59C.2.3 Test sample, tools, installation . 61C.2.4 Test operation . 62C.3 Test result. 62C.4 Test report . 63Annex D (normative)
Impact test method for guards . 64D.1 General . 64D.2 Test method . 64D.2.1 Preliminary remarks . 64D.2.2 Testing equipment . 64D.2.3 Projectile for guards . 64D.2.4 Sampling. 65D.2.5 Test procedure . 65D.3 Results . 65D.4 Assessment . 65D.5 Test report . 66D.6 Test equipment for impact test . 66Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 67Bibliography . 70 SIST EN 1870-4:2012

Machines covered by this document are listed under 1.3 of the Machinery Directive. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 614-1:2006+A1:2009, Safety of machinery  Ergonomic design principles  Part 1: Terminology and general principles EN 847-1:2005+A1:2007, Tools for woodworking  Safety requirements  Part 1: Milling tools, circular saw blades EN 894-1:1997+A1:2008, 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 894-2:1997+A1:2008, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 894-3:2000+A1:2008, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 1005-1:2001+A1:2008, Safety of machinery — Human physical performance — Part 1: Terms and definitions EN 1005-2:2003+A1:2008, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and component parts of machinery EN 1005-3:2002+A1:2008, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation EN 1005-4:2005+A1:2008, Safety of machinery — Human physical performance — Part 4: Evaluation of working postures and movements in relation to machinery EN 1037:1995+A1:2008, Safety of machinery — Prevention of unexpected start-up EN 1049-2:1993, Textiles — Woven fabrics — Construction — Methods of analysis — Part 2: Determination of number of threads per unit length (ISO 7211-2:1984 modified) SIST EN 1870-4:2012

(IEC 60825-1:2007) EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1:2007) EN 61496-1:2004, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified) EN 61800-5-2:2007, Adjustable speed electrical power drive systems  Part 5-2: Safety requirements  Functional (IEC 61800-5-2:2007) EN ISO 1421:1998, Rubber- or plastics-coated fabrics  Determination of tensile strength and elongation at break (ISO 1421:1998) EN ISO 2060:1995, Textiles  Yarn from packages  Determination of linear density (mass per unit length) by the skein method (ISO 2060:1994) EN ISO 2286-2:1998, Rubber- or plastics-coated fabrics  Determination of roll characteristics  Part 2: Methods for determination of total mass per unit area, mass per unit area of coating and mass per unit area of substrate (ISO 2286-2:1998) EN ISO 3743-1:2010, Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for small moveable sources in reverberant fields — Part 1: Comparison method for a hard-walled test room (ISO 3743-1:2010) EN ISO 3743-2:2009, Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, moveable sources in reverberant fields — Part 2: Methods for special reverberation test rooms (ISO 3743-2:1994)
1) EN 60439-1:1999 is impacted by EN 60439-1:1999/A1:2004. 2) EN 60529:1991 is impacted by EN 60529:1991/A1:2000. SIST EN 1870-4:2012

EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of controls systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 13850:2008, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) EN ISO 13857:2008, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) ISO 4649:2010, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating cylindrical drum device ISO 7960:1995, Airborne noise emitted by machine tools — Operating conditions for woodworking machines 3 Terms and definitions 3.1 General For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the following apply. SIST EN 1870-4:2012

a) Cutting against the feed b) Climb cutting Key 1 fixed saw blade 2 workpiece : feed direction Figure 1 — Relation between cutting direction and feed direction 3.2.2 machine actuator power mechanism used to effect motion of the machine 3.2.3 integrated feed feed mechanism for the workpiece (or tool) which is integrated with the machine and where the workpieces (or machine element with incorporated tool) are held and controlled mechanically during the machining operation Note 1 to entry
In the case of machines covered by this document, integrated feed is in the form of rollers, chain conveyor or chain bed. The words in brackets are not applicable to the machine covered by this document. 3.2.4 stationary machine machine designed to be located on or fixed to the floor or other parts of the structure of the premises and to be stationary during use SIST EN 1870-4:2012

The words in brackets are not applicable to the machine covered by this document. 3.2.8 anti-kickback fingers moveable elements at the infeed or the outfeed of the machine to prevent kickback of the workpiece or divided parts of it 3.2.9 anti-splinter fingers moveable elements at the infeed of the machine to prevent the ejection of splinters 3.2.10 run-up time time elapsed from the actuation of the start control device until the spindle speed reaches the intended speed 3.2.11 run-down time time elapsed from the actuation of the stop control device up to spindle standstill 3.2.12 cutting width capacity maximum distance between external cutting surfaces of the two outside saw blades mounted at extreme positions on the saw spindle Note 1 to entry
See Figure 2, f. SIST EN 1870-4:2012

Key a maximum distance between the two outer cutting planes of the outside saw blades b distance between the inner surface of the outside saw blade and the lateral limitation given by the feed system c width of the workpiece conveyor d maximum distance between saw blade and fence e cutting width of the saw blade f cutting width capacity, distance between the inner cutting planes of the outside saw-blades Figure 2  Cutting width capacity 3.2.13 manual loading of power fed machines where the workpiece is presented by the operator directly to the machine integrated feed, e.g. rotating feed rollers, chain conveyor or chain bed; i.e. for which there is no intermediate loading device to receive and transfer the workpiece from the operator to the integrated feed 3.2.14 manual unloading of power fed machines where the workpiece is removed by the operator directly from the machine outfeed, i.e. for which there is no intermediate unloading device to receive and transfer the workpiece from the machine outfeed to the operator 3.2.15 information of the supplier statements, sales literature, leaflets or other documents where the manufacturer (or supplier) declares either the characteristics or the compliance of the material or product, to a relevant standard 3.2.16 safety programmable logic controller (PLC) programmable logic controller dedicated to safety related application designed in the required PL according to EN ISO 13849-1:2008 SIST EN 1870-4:2012

Embedded software is usually written in full variability language (FVL) defined in 3.1.35 of
EN ISO 13849-1:2008. Note 2 to entry
For example the operating system of a speed monitoring device. 3.2.19 safety-related application software (SRASW) software specific to the application, that is implemented by the machine manufacturer, generally containing logic sequences, limits and expressions that control the appropriate inputs, outputs, calculations and decisions necessary to meet SRP/CS requirements (EN ISO 13849-1:2008, 3.1.36) 3.2.20 performance level PL discrete level used to specify the ability of safety-related parts of control systems to perform a safety function under foreseeable conditions (EN ISO 13849-1:2008, 3.1.23) 4 List of significant hazards This clause contains all the significant hazards, hazardous situations and events (see EN ISO 12100:2010), identified by risk assessment as significant for the machines as defined in the scope and which require action to eliminate or reduce the risk. This document deals with these significant hazards by defining safety requirements and/or measures or by reference to relevant standards. These hazards are listed in Tables 1. SIST EN 1870-4:2012

No Hazards, hazardous situations and hazardous events EN ISO 12100:2010 Relevant sub-clause of this document
1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 6.2.2.1, 6.2.2.2, 6.3 5.3.2, 5.3.3, 5.3.5, 5.3.7, Annex A
b) relative location; 5.2.2, 5.2.5, 5.2.10, 5.3.5, 5.3.7, 5.4.5
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.2.7
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.2.8, 5.2.9, 5.3.5, 5.3.6
e) mechanical strength. 5.3.2, 5.3.5
- accumulation of energy inside the machinery:
f) liquids and gases under pressure; 6.2.10, 6.3.5.4 5.3.5.2, 5.4.7, 5.4.8 1.1 Crushing hazard
5.3.6, 5.3.7.2, 5.3.7.3 1.2 Shearing hazard 5.3.6, 5.3.7 1.3 Cutting or severing hazard 5.3.3, 5.3.4, 5.3.5, 5.3.6, 5.3.7 1.4 Entanglement hazard 5.3.6, 5.3.7 1.5 Drawing-in or trapping hazard 5.3.6, 5.3.7 1.6 Impact hazard 5.3.2, 5.3.5 1.7 Stabbing and puncture hazard 5.3.2, 5.3.5 1.9 High pressure fluid injection or ejection hazard 6.2.10 5.3.5.2, 5.4.7, 5.4.8 2 Electrical hazards due to: SIST EN 1870-4:2012

5.4.9 7 Hazards generated by materials and substances (and their constituent elements) processed or used by the machinery 7.1 Hazards from contact with or inhalation of harmful fluids and dusts 6.2.3, 6.2.4
5.4.3, 6.3 7.2 Fire hazard 6.2.4
5.4.1 8 Hazards generated by neglectingergonomic principles in machinery design related to: 8.1 Unhealthy postures or excessive effort 6.2.7, 6.2.8, 6.2.11.12, 6.3.5.5, 6.3.5.6 5.2.2, 5.4.5 8.2 Hand-arm or foot-leg anatomy 6.2.8 5.2.2, 5.4.5 8.4 Local lighting 6.2.8 6.3 8.5 Mental overload and underload, stress 6.2.8 6.3 8.6 Human error, human behaviour 6.2.8, 6.2.11.8, 6.2.11.10, 6.3.5.2, 6.4 5.2.1, 5.4.5, 6.3 8.7 Design, location or identification of manual controls 6.2.8.f, 6.2.11.8 5.2.2, 5.4.5 8.8 Design or location of visual display units 6.2.8, 6.4.2 5.2.2, 5.4.5 10 Unexpected start up, unexpected overrun/overspeed (or any similar malfunction) from: 10.1 Failure/disorder of the control system 6.2.11, 6.3.5.4
5.2.1, 5.2.11, 5.4.13 SIST EN 1870-4:2012

5.2.10, 5.4.6, 5.4.7 10.3 External influences on electrical equipment 6.2.11.11 5.2.1, 5.4.8 10.5 Errors in the software 6.2.11.7 5.2.1
10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 6.2.8, 6.2.11.8, 6.2.11.10, 6.3.5.2, 6.4 5.4.5, 6.3 11 Impossibility of stopping the machine in the best possible conditions 6.2.11.1, 6.2.11.3, 6.3.5.2
5.2.2, 5.2.4, 5.2.5 12 Variations in the rotational speed of tools 6.2.2.2, 6.2.3 5.2.9 13 Failure of the power supply 6.2.11.1, 6.2.11.4 5.2.10 14 Failure of the control circuit 6.2.11, 6.3.5.4
5.2.11 15 Errors of fitting 6.2.7, 6.4.5 5.4.11 16 Break-up during operation 6.2.3 5.3.2 17 Falling or ejected objects or fluids 6.2.3, 6.2.10
5.3.5, Annex D 18 Loss of stability / overturning of machinery 6.3.2.6
5.3.1 5 Safety requirements and/or measures 5.1 General The machine shall comply with the safety requirements and/or protective measures of Clause 5. NOTE 1 In addition, the machine should be designed according to the principles of EN ISO 12100:2010 for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges of the machine frame). NOTE 2 For guidance in connection with risk reduction by design, see 6.2 of EN ISO 12100:2010, and for safeguarding measures, see 6.3 of EN ISO 12100:2010. 5.2 Controls 5.2.1 Safety and reliability of control systems 5.2.1.1 General 5.2.1.1.1 Safety functions For the purpose of this document safety-related parts of a control system (SRP/CS) start at the point where the safety-related input signals are initiated (including e.g. the actuating cam and the roller of the position switch) and end at the output of the power control elements (including, for example, the main contacts of a contactor). For the implementation of any safety-related function the appropriate requirements of EN ISO 13849-1:2008 shall apply. SIST EN 1870-4:2012

NOTE If monitoring systems are used for diagnostics, they are also considered as SRP/CS. 5.2.1.1.2 Performance level (PL) For the safety-related parts of the control system (SRP/CS) with the functions listed in column 1 of Table 2 the minimum performance level (see EN ISO 13849-1:2008, 4.5) shall be in accordance with column 2 of Table 2. Table 2 — Safety functions, Performance Levels (PL) Function Performance level (PL) Relevant Clause(s) of this document starting = c 5.2.3 prevention of unexpected start-up = c 5.2.10, 5.2.11, 5.3.6 normal stopping = c 5.2.4 emergency stop = c 5.2.5 interlocking of guards for drives = c 5.3.7.3 interlocking of guards for tools with guard locking = c 5.3.7.1, 5.3.7.2, 5.3.7.3 interlocking of functions = c 5.2.4, 5.2.7, 5.2.8, 5.3.4, 5.3.5.1, 5.3.6, 5.3.7 feed speed indication/detection = c 5.2.9 zero speed detection = c 5.3.7.1 in setting mode: initiation of powered saw blades axial adjustment
for positioning the saw blades,
feed roller height
and pressure board/shoes = c 5.2.7 mode selection = c 5.2.6, 5.3.6 hold-to-run control = c 5.2.7, 5.2.8 mechanical operated trip device = c 5.3.7.2 braking system = b or = c 5.3.4 empty machine detection = c 5.2.7, 5.3.5.1.2, 5.3.7.1 workpiece clamping
= c 5.2.6, 5.2.7, 5.3.6
NOTE The average probability of a dangerous failure per hour for the different performance levels is described in Table 3 of EN ISO 13849-1:2008. If on machines designed for different modes of operation the same SRP/CS is used for all safety functions in the different modes the SRP/CS shall meet the requirements of the highest PL of the different modes. Where a combination of SRP/CS is used the overall PL identified according 6.3 of EN ISO 13849-1:2008 shall comply at least with the PL required in Table 2. SRP/CS for which a special standard exists shall fulfil all requirements of this document. SIST EN 1870-4:2012

Unless safety-related electronic parts of the control system (SRP/CS) being part of a component for which a special standard exists they shall fulfil the environmental requirements according to 6.1 and 6.2 of EN 50178:1997. Unless SRP/CS dedicated to realise performance level b) or c) being part of a component for which a special standard exists, they shall fulfil the EMC requirements for type 2 in accordance with the requirements of EN 61496-1:2004 and EN 61496-1:2004/A1:2008. Unless SRP/CS dedicated to realise performance level d) or e) being part of a component for which a special standard exists, they shall fulfil the EMC requirements for type 4 in accordance with the requirements of EN 61496-1:2004 and EN 61496-1:2004/A1:2008. NOTE 1 See also 5.4.8 for the EMC requirements on the complete machine. Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine, measurement and relevant functional testing on the machine. NOTE 2 For the components characteristics a confirmation from the components' manufacturers can be useful.
5.2.1.2 Protective devices Protective devices shall be in accordance with the specific standards. For the devices listed below the following requirements apply: a) magnetic/proximity switches shall be in accordance with the requirements of 6.2 of EN 1088:1995+A2:2008 and the related control system shall be PL = c in accordance with the requirements of EN ISO 13849-1:2008; b) if a time delay is used it shall be of fail safe technique e.g. of capacity type conforming to the requirements of PL = c in accordance with the requirements of EN ISO 13849-1:2008. NOTE 1 Also see 5.4.8 for the EMC requirements on the complete machine. See also 5.2.1.1. Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine, measurement and relevant functional testing of the machine. NOTE 2 For the components characteristics a confirmation from the components' manufacturers can be useful.
5.2.2 Position of controls Hand operated controls, for start and stop of the motor(s) for the saw spindle(s), for the feed and for the height adjustment of the upper roller support shall be situated either as shown in Figure 3 or on a moveable control panel at the loading position. SIST EN 1870-4:2012

Verification: By checking the relevant drawings measurement and inspection of the machine. Dimensions in millimetres
Front view Side view Key 1 position of the operator at infeed left side
2 infeed table 3 feed direction Figure 3  Position of controls (front and side views of infeed) 5.2.3 Starting Before starting or re-starting the machine all interlocked guard(s) (where fitted as indicated in 5.3.7) shall be in place and functional. This is achieved by the interlocking arrangements described in 5.3.7.1, 5.3.7.2 and 5.3.7.3. For
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