EN 1870-8:2001+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 8: Einblattbesäum- und Leistenkreissägemaschinen mit kraftbetätigtem Sägeaggregat und Handbeschickung und/oder HandentnahmeSécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 8: Déligneuses monolames à déplacement mécanisé du groupe de sciage et à chargement manuel et/ou déchargement manuelSafety of woodworking machines - Circular sawing machines - Part 8: Single blade edging circular rip sawing machines with power driven saw unit and manual loading and/or unloading79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-8:2001+A1:2009SIST EN 1870-8:2002+A1:2009en01-november-2009SIST EN 1870-8:2002+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-8:2001+A1
September 2009 ICS 79.120.10 Supersedes EN 1870-8:2001English Version
Safety of woodworking machines - Circular sawing machines - Part 8: Single blade edging circular rip sawing machines with power driven saw unit and manual loading and/or unloading
Sécurité des machines pour le travail du bois - Machines à scier circulaires - Partie 8: Déligneuses monolames à déplacement mécanisé du groupe de sciage et à chargement manuel et/ou déchargement manuel
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 8: Einblattbesäum- und Leistenkreissägemaschinen mit kraftbetätigtem Sägeaggregat und Handbeschickung und/oder Handentnahme This European Standard was approved by CEN on 30 September 2001 and includes Amendment 1 approved by CEN on 30 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 worldwide for CEN national Members. Ref. No. EN 1870-8:2001+A1:2009: ESIST EN 1870-8:2002+A1:2009

!!!!List of significant hazards"""" . 135 Safety requirements and/or measures . 165.1 Controls . 165.1.1 Safety and reliability of control systems . 165.1.2 Position of controls . 175.1.3 Starting . 185.1.4 Normal stopping . 185.1.5 Emergency stop . 195.1.6 Integrated feed . 195.1.7 Sawblade changing . 205.1.8 Speed changing . 205.1.9 Control duplication . 205.1.10 Failure of the power supply . 205.1.11 Movement of the fence . 205.2 Protection against mechanical hazards . 215.2.1 Stability . 215.2.2 Risk of break-up during operation . 215.2.3 Tool holder and tool design . 225.2.4 Braking . 235.2.5 Devices to minimise the possibility or the effect of ejection . 245.2.6 Workpiece supports and guides . 305.2.7 Prevention of access to moving parts . 315.2.8 Workpiece clamping. 335.2.9 Safety appliances. 355.3 Protection against non-mechanical hazards . 365.3.1
!!!!Fire"""" . 365.3.2 Noise . 365.3.3 Emission of chips, dust and gases . 375.3.4 Electricity . 375.3.5 Ergonomics and handling . 375.3.6 Lighting . 385.3.7 Pneumatic . 385.3.8 Hydraulic . 385.3.9 Heat . 385.3.10 Substances . 385.3.11 Vibration . 385.3.12
!!!!Electromagnetic compatibility"""" . 385.3.13 Laser . 395.3.14 Static electricity . 395.3.15 Errors of fitting . 395.3.16 Isolation . 395.3.17 Maintenance . 39SIST EN 1870-8:2002+A1:2009

Saw spindle dimensional tolerances . 45Annex B (normative)
Riving knife mounting strength test . 46Annex C (normative)
Lateral stability riving knife test . 47Annex D (normative)
Sectional safety curtain material rigidity test . 48Annex E (normative)
Operating conditions for noise emission measurement . 49E.1 General . 49E.2 Noise measurements . 49E.3 General data sheet . 50Annex ZA (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC"""" . 55Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 56Bibliography . 57
!EN ISO 12100-1:2003" for a description of A, B and C standards). 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. SIST EN 1870-8:2002+A1:2009

0 Introduction This European Standard has been prepared to be a harmonised standard to provide one means of conforming to the essential safety requirements of the Machinery Directive, and associated EFTA regulations. This European Standard is a type “C” standard as defined in !EN ISO 12100-1:2003". The extent to which hazards are covered is indicated in the scope of this European Standard. The requirements of this European Standard concern designers, manufacturers, suppliers and importers of single blade edging circular rip sawing machines with power driven saw unit and manual loading and/or unloading. This European Standard also includes information to be provided by the manufacturer to the user. Common requirements for tooling are given in !EN 847-1:2005".
1 Scope !This document deals with all significant hazards, hazardous situations and events as listed in Clause 4 which are relevant to single blade edging circular rip sawing machines with power driven saw unit and manual loading and/or unloading, hereinafter referred to as “machines”, designed to cut solid wood, chipboard, fibreboard and plywood." !deleted text" For Computer Numerically Controlled (CNC) machines this European Standard does not cover hazards related to Electro-Magnetic Compatibility (EMC). This European Standard applies to machines where the workpiece is stationary, the vertical and horizontal movements of the saw unit are power driven, and where the machine is provided with workpiece clamping the workpiece may or may not be clamped during cutting. This European Standard does not apply to machines:  where the workpiece is fed to the sawblade during cutting;  designed specifically for cutting veneers;  provided with a device situated behind the line of cut, which moves in a direction parallel to the line of cut, for automatically unloading the workpiece during the return of the saw unit to the rest position. This European Standard is primarily directed at machines which are manufactured after the date of issue of this European Standard. 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" SIST EN 1870-8:2002+A1:2009

Part 1: Emission EN 50370-2:2003, Electromagnetic compatibility (EMC) — Product family standard for machine-tools —
Part 2: Immunity" !EN 60204-1:2006", Safety of machinery — Electrical equipment of machines — Part 1: General requirements !(IEC 60204-1:2005, modified) " !EN 60439-1:1999, Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies (IEC 60439-1:1999) " EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) SIST EN 1870-8:2002+A1:2009

Key 1 Sectional safety curtain
2 Sawblade in rest position
3 Riving knife
4 Foot-pedal
5 Workpiece end stop
6 Workpiece
7 Extraction outlet
8 Sectional safety curtain support
9 Front deterring/impeding device (on machines with raising and lowering of the saw unit at alternative positions)
10 Workpiece clamping device (pressure beam) (optional) Figure 1 — Terminology 3.2 Definitions 3.2.1 single blade edging circular rip sawing machines with power driven saw unit and manual loading and/or unloading machine where the workpiece is supported in the horizontal plane during cutting. The saw unit is mounted below the workpiece and the cutting stroke is power driven. The sawblade is automatically raised through the slot in the worktable and is retracted from the workpiece for the return stroke. The machine is designed to cut against the feed in a single straight line only (see Figure 1) SIST EN 1870-8:2002+A1:2009

b) the facility to tilt the sawblade for angled cutting; c) limitation of the cutting stroke length; d) workpiece clamping; e) the facility to vary the feed speed; f) powered movement of the fence; g) the facility to allow raising and lowering of the saw unit at alternative positions; h) the facility for multiple cutting. 3.2.2 workpiece end stop adjustable end stop to hold the workpiece in the direction of the line of cut (see Figure 1) 3.2.3 saw unit rest position position to which the saw unit returns at the end of each cutting cycle (see Figure 1) 3.2.4 sectional safety curtain device to prevent inadvertent access to the sawblade during the cutting stroke (see Figure 1) 3.2.5 workpiece clamping device optional device which extends over the full cutting length of the machine. Clamping can be achieved either by a pressure beam between the sectional safety curtains (see Figure 1) or the sectional safety curtain support is designed to also be the clamping device 3.2.6 multiple cutting where the fence position is under numeric control to allow several cutting strokes for the same workpiece 3.2.7 machine actuator power mechanism used to effect motion of the machine 3.2.8 integrated feed feed mechanism for the workpiece or tool which is integrated with the machine and where the workpiece or machine element with incorporated tool are held and controlled mechanically during the machining operation 3.2.9 safety appliance additional device which is not an integral part of the machine but which assists the operator in the safe feeding of the workpiece e.g. see Figure 2 SIST EN 1870-8:2002+A1:2009

Figure 2a) — Example of push stick
Figure 2b) — Example of push block Figure 2 — Examples of a push stick and push block 3.2.10 ejection unexpected movement of the workpiece or parts of it or part of the machine from the machine during processing 3.2.11 run-up time time elapsed from the actuation of the start control device until the spindle reaches the intended speed 3.2.12 run-down time time elapsed from the actuation of the stop control device up to spindle standstill SIST EN 1870-8:2002+A1:2009

4 !!!!List of significant hazards"""" !This clause contains all significant hazards, hazardous situations and events (see EN 1050:1996) as far as they are dealt with in this document, 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 Table 1 in accordance with Annex A of EN 1050:1996. Table 1 — List of significant hazards
No Hazards, hazardous situations and hazardous events EN ISO 12100 Relevant sub-clause of this document
Part 1: 2003 Part 2: 2003
1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 4.2 4.2.1, 4.2.2, 5 5.1.11, 5.2.3, 5.2.5, 5.2.7, 5.2.8, 5.2.9
b) relative location; 5.1.2, 5.1.3, 5.2.5, 5.2.7, 5.2.8
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.2.6
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.2.6 SIST EN 1870-8:2002+A1:2009

e) mechanical strength. 5.2.2, 5.2.3, 5.2.5, 5.2.6
- accumulation of energy inside the machinery:
f) elastic elements (springs), or 4.2 4.10, 5.5.4 5.2.8
g) liquids and gases under pressure; 4.2 4.10, 5.5.4 5.3.7, 5.3.8 1.1 Crushing hazard 4.2.1
5.1.8, 5.1.11, 5.2.7, 5.2.8 1.2 Shearing hazard 5.2.7 1.3 Cutting or severing hazard 5.2.4, 5.2.7, 5.2.8, 5.2.9 1.4 Entanglement hazard 5.2.7 1.5 Drawing-in or trapping hazard 5.2.7, 5.2.9 1.9 High pressure fluid injection or ejection hazard 5.3.7, 5.3.8 2 Electrical hazards due to: 2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4 5.3.4, 5.3.16 2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 4.3 4.9 5.3.4, 5.3.16 4 Hazards generated by noise, resulting in: 4.1 Hearing loss (deafness), other physiological disorders (loss of balance, loss of awareness) 4.5 4.2.2, 5 5.3.2 4.2 Interference with speech communication, acoustic signals.
5.3.2 6 Hazards generated by radiation 6.5 Lasers 4.7
5.3.13 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 4.8 4.3b, 4.4
5.3.3 7.2 Fire hazard 4.8 4.4
5.3.1, 5.3.3, 6.3 8 Hazards generated by neglecting ergonomic principles in machinery design related to: 8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2, 4.11.12, 5.5.5, 5.5.6 5.1.2 8.2 Hand-arm or foot-leg anatomy 4.9 4.8.3
5.1.2 8.4 Local lighting
4.8.6 6.3 8.6 Human error, human behaviour
4.8, 4.11.8, 4.11.10, 5.5.2, 6 6.3 8.7 Design, location or identification of manual controls
4.8.7, 4.11.8 5.1.2 8.8 Design or location of visual display units
4.8.8, 6.2 5.1.2 SIST EN 1870-8:2002+A1:2009

5.1.7 10 Unexpected start up, unexpected overrun/overspeed (or any similar malfunction) from: 10.1 Failure/disorder of the control system
4.11, 5.5.4
5.1.1, 5.1.11 10.2 Restoration of energy supply after an interruption
4.11.4
5.1.10, 5.1.11 10.3 External influences on electrical equipment
4.11.11 5.1.1, 5.3.4, 5.3.12 10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 4.9 4.8, 4.11.8, 4.11.10, 5.5.2, 6 5.1.1, 5.3.5,
6.3 11 Impossibility of stopping the machine in the best possible conditions
4.11.1, 4.11.3, 5.5.2
5.1.2, 5.1.4, 5.1.5 13 Failure of the power supply
4.11.1, 4.11.4 5.1.10 14 Failure of the control circuit
4.11, 5.5.4
5.1.1 15 Errors of fitting 4.9
4.7, 6.5
5.3.15 16 Break-up during operation 4.2.2 4.3 5.2.2 17 Falling or ejected objects or fluids 4.2.2 4.3, 4.10
5.2.2, 5.2.3, 5.2.5, 5.2.6, 5.3.8 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
5.2.1 "
5 Safety requirements and/or measures For guidance in connection with risk reduction by design, see !4.1 of EN ISO 12100-2:2003", and in addition: 5.1 Controls 5.1.1 Safety and reliability of control systems For the purposes of this European Standard a safety related control system is one from and including the initial manual control or position detector to the point of input to the final actuator or element e.g. motor. The safety related control systems of this machine (see !EN ISO 13849-1:2008") are those for:  starting (see 5.1.3);  normal stopping (see 5.1.4);  emergency stopping (see 5.1.5);  interlocking (see 5.1.6, 5.1.7, 5.1.8, 5.1.11, 5.2.7 and 5.2.8);  interlocking with guard locking (see 5.2.7);  hold-to-run control device (see 5.1.8 and 5.1.11);  the braking system (see 5.2.4);  the trip bar (if provided) (see 5.2.8);  clamping (if provided) (see 5.2.8);  stepless speed changing (if provided) (see 5.1.9);  speed limitation of powered fence movement (if provided) (see 5.2.6.1). Unless otherwise stated in this European Standard these control systems shall, as a minimum, be designed and constructed in accordance with category 1 as defined in !EN ISO 13849-1:2008". For the purposes of this European Standard "well tried components and principles" means: a) electrical components if they comply with relevant standards including the following as: 1) !EN 60947-5-1:2004" (section 3) for control switches with positive opening operation used as mechanical actuated position detectors for interlocking guards and for relays used in auxiliary circuits; 2) !EN 60947-4-1:2001" for electromechanical contactors and motor-starters used in main circuits; 3) !HD 22.1 S4:2002" for rubber-insulated cable; 4) !HD 21.1 S4:2002" for polyvinyl chloride cable if this cable is additionally protected against mechanical damage by positioning (e.g. inside frames); b) electrical principles if they comply with the first four measures listed in 9.4.2.1 of !EN 60204-1:2006". The circuits shall be either “hardwired”, or if electronic components are used in safety related control SIST EN 1870-8:2002+A1:2009

Key 1 Area Y
2 Area Z
3 Table surface
4 Bottom edge of sectional safety curtain in its highest position Figure 3 — Position of controls 5.1.3 Starting See 9.2.5.2 of !EN 60204-1:2006" first and second sentence and in addition: For the purposes of this European Standard "all of the safeguards in place and functional" is achieved by the interlocking arrangements described in 5.2.7 and “operation” means rotation and/or powered adjustment of any saw spindle and/or any workpiece holding device and/or saw unit cutting stroke. The exceptions described in 9.2.5.2 of !EN 60204-1:2006" are not relevant. The cutting stroke shall be under manual control. This control shall be a hold-to-run control device and protected against inadvertent operation. The sequence of the cutting stroke shall be as follows: a) the sectional safety curtain shall be lowered to its lowest position before the cutting stroke can be initiated; b) the sawblade shall have reached its retracted position below the table before the upward movement of the sectional safety curtain is initiated; c) the sawblade shall have reached its retracted position below the table before the return stroke of the saw unit is initiated. A new cycle shall only be capable of being started when the previous cycle is complete and the hold-to-run control is released. Verification:By checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.4 Normal stopping The machine shall be fitted with a stop control which, when actuated, shall disconnect power from all the SIST EN 1870-8:2002+A1:2009

!EN 60204-1:2006". When initiated the stopping sequence shall be: a) stop the saw unit traversing movement and lower the sawblade below the table; b) stop sawblade rotation (the saw unit may return to its rest position) and activate the brake if fitted; c) release clamp where fitted; d) return the sectional safety curtain to its upper position; e) maintain guard locking until the sawblade is stationary; f) cut power to all machine actuators. The stopping sequence shall be satisfied at the level of the control circuits. If a time delay device is used, the time delay shall be at least the maximum run-down time and either, the time delay shall be fixed, or, the time delay adjustment device shall be sealed. Verification:By checking relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.5 Emergency stop See !EN ISO 13850:2008" and in addition: The machine shall be fitted with emergency stop control device(s) positioned in accordance with the requirements of 5.1.2. This emergency stop control device(s) shall satisfy the requirements of 9.2.5.4 and 10.7 of !EN 60204-1:2006". !10.7.4 of EN 60204-1:2006" does not apply (see also 5.1.11). The stop function shall be of category 1 in accordance with 9.2.2 of !EN 60204-1:2006" and the stopping sequence shall be: a) stop the saw blade traversing movement and lower the sawblade below the table; b) stop sawblade rotation and activate the brake (if fitted); c) maintain guard locking until the sawblade is stationary; d) cut power to all machine actuators. The stopping sequence shall be satisfied at the level of the control circuits. If a time delay device is used, time delay shall be at least the maximum run-down time. Either the time delay shall be fixed, or the time delay adjustment device shall be sealed. Verification:By checking the relevant drawings and/or circuit diagrams, inspection and relevant functional testing of the machine. 5.1.6 Integrated feed The cutting stroke of the saw unit shall not operate unless the rotation of the saw spindle is initiated. Initiation of the saw blade stop control shall also stop the integrated feed. Where it is necessary to move the saw unit to its rest position with the guards open e.g. for the removal of SIST EN 1870-8:2002+A1:2009
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