EN 1870-16:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Varnost lesnoobdelovalnih strojev – Krožne žage – 16. del: Dvojne zajeralne žage za V-rezanjeSicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 16:
KlinkschnittkreissägemaschinenSécurité des machines pour le travail du bois - Machines a scier circulaires - Partie 16: Tronçonneuses doubles a coupe en VSafety of woodworking machines - Circular sawing machines - Part 16: Double mitre sawing machines for V-cutting79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-16:2005SIST EN 1870-16:2005en01-oktober-2005SIST EN 1870-16:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1870-16April 2005ICS 79.120.10English versionSafety of woodworking machines - Circular sawing machines -Part 16: Double mitre sawing machines for V-cuttingSécurité des machines pour le travail du bois - Machines àscier circulaires - Partie 16: Tronçonneuses doubles àcoupe en VSicherheit von Holzbearbeitungsmaschinen -Kreissägemaschinen - Teil 16: KlinkschnittkreissägemaschinenThis European Standard was approved by CEN on 21 February 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1870-16:2005: ESIST EN 1870-16:2005

Saw spindle dimensional tolerances.42 Annex B (informative)
Recommendations for safe use.43 SIST EN 1870-16:2005

Relationship between this European Standard and the Essential Requirements of EU Directive 98/37.44 Bibliography.47
EN 61029-1:1996 and EN 61029-2-9:2002. This document is not applicable to double mitre sawing machines for V-cutting fitted with hydraulic system. This document is not applicable to double mitre sawing machines for V-cutting which are manufactured before the date of publication of this document by CEN. NOTE 2 Machines covered by this document are listed under A.1.4 of Annex IV of the Machinery Directive. SIST EN 1870-16:2005

- Precision methods for anechoic and semi-anechoic rooms (ISO 3745:2003) EN ISO 3746:1995, Acoustics – Determination of sound power levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:1995) EN ISO 4871:1996, Acoustics – Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 9614-1:1995, Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993) EN ISO 11202:1995, Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at the work station and at other specified positions – Survey method in situ (ISO 11202:1995) EN ISO 11204:1995, Acoustics - Noise emitted by machinery and equipment - Measurement of emission sound pressure levels at a work station and at other specified positions – Method requiring environmental corrections (ISO 11204:1995) EN ISO 11688-1:1998, Acoustics - Recommended practice for the design of low-noise machinery and equipment - Part 1: Planning (ISO/TR 11688-1:1995) EN ISO 11688-2:2000, Acoustics – Recommenced practice for the design of low-noise machinery and equipment - Part 2: Introduction to the physics of low-noise design (ISO TR 11688-2:1998) 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) prEN ISO 13849-1:2004, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design (ISO/DIS 13849-1:2004) EN ISO 13849-2:2003, Safety of machinery – Safety-related parts of control systems – Part 2: Validation (ISO 13849-2:2003) ISO 7960, Airborne noise emitted by machine tools – Operating conditions for woodworking
machines HD 21-1 S3: 1997, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 1: General requirements HD 22-1 S3: 1997, Rubber insulated cables of rated voltages up to and including 450/750V - Part 1: General requirements
Key 1 Enclosure 2 Saw unit 3 Machine table 4 Fence 5 Workpiece clamping devices 6 Controls Figure 1 — Terminology of a vertical double mitre sawing machine for V-cutting SIST EN 1870-16:2005

Key 1 Enclosure 2 Saw unit 3 Machine table 4 Fence 5 Workpiece clamping devices 6 Controls Figure 2 — Terminology of a horizontal double mitre sawing machine for V-cutting 3.3 Definitions 3.3.1 cross-cutting operation of cutting across the grain of a wooden workpiece 3.3.2 double mitre sawing machine for V-cutting machine designed to make special cross-cuts for e.g. picture frames, furniture, doors or furnishings. The machine is fitted with one saw unit or two saw units (dual stroke machine). The saw unit consists of one or two saw blades whose spindles are situated above (vertical double mitre sawing machine for V-cutting, see
Figure 1) or behind the workpiece (horizontal double mitre sawing machine for V-cutting, see Figure 2) when the saw blades are in their rest positions. The angle between the saw spindle axes can be either fixed (normally 45°) or adjustable from 0° to 45° with respect to the centre line of the machine. The saw blades move into or through the workpiece in vertical or horizontal direction during the cut to produce a V-cut in one cycle. The feed of the saw unit can be manual or integrated feed SIST EN 1870-16:2005

electrical part of a control system whose failure can result in a hazard (3.2.4 of prEN 62061:2003
(CDV IEC 62061 edition 1 (document 44/441/CDV)) 3.3.16 embedded software software that is part of the system supplied by the manufacturer and is not accessible for modification by the end user NOTE 1 Embedded software is also referred to as firmware or system software see 3.2.49 of prEN 62061:2003
(CDV IEC 62061 edition 1 (document 44/441/CDV)). NOTE 2 Manufacturer means manufacturer of the system. Example The operating system of a speed monitoring device. 3.3.17 application software software specific to the application specifically implemented for the SRECS. In general it contains logic sequences, limits and expressions that control the appropriate outputs, decisions necessary to meet SRECS functional requirements (see 3.2.48 of prEN 62061:2003 (CDV IEC 62061 edition 1 (document 44/441/CDV)) Example The PLC program to run a machine. SIST EN 1870-16:2005

No
Hazards
EN ISO 12100
Relevant clause of this document
Part 1: 2003 Part 2: 2003
1 Mechanical hazards due to:
- machine parts or workpieces, e.g.: a) shape; 5.3.3, 5.3.6, 5.3.8, Annex A b) relative location; 5.3.3, 5.3.5, 5.3.6, 5.3.7,5.3.8 c) mass and stability (potential energy of elements which may move under the effect of gravity); 5.3.7
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.3.7, 5.3.8
e) inadequacy of mechanical strength. 4.2, 4.10 4.2.1, 4.2.2, 5 5.3.1, 5.3.2, 5.3.3, 5.3.6
- accumulation of energy inside the machinery e.g.: 4.2 4.10, 5.5.4
f) elastic elements (springs);
5.3.7
g)
gases under pressure;
5.3.7, 5.3.8 1.1 Crushing hazard 5.3.7, 5.3.8 1.2 Shearing hazard 5.3.7 1.3 Cutting or severing hazard 5.3.7 1.4 Entanglement hazard 5.3.3, 5.3.7 1.5 Drawing-in or trapping hazard 5.3.7 1.6 Impact hazard 5.3.7 1.9 High pressure air ejection hazard 4.2.1
5.4.6 to be continued
No
Hazards
EN ISO 12100
Relevant clause of this Standard
Part 1: 2003 Part 2: 2003
2 Electrical hazards due to:
2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4
5.4.4,
2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 4.3 4.9
5.4.4,
4 Hazards generated by noise, resulting in:
4.1 Hearing loss (deafness), other physiological disorders (e.g. loss of balance, loss of awareness) 4.5 4.2.2, 5
5.4.2 4.2 Interference with speech communication, acoustic signals, etc.
5.4.2 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 dusts 4.8 4.3b, 4.4
5.4.3 7.2 Fire hazard 4.8 4.4
5.4.1
8 Hazards generated by neglecting ergonomic principles in machinery design as, e.g. hazards from:
8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2, 4.11.2, 5.5.5, 5.5.6
5.2.2, 5.4.5, 6.3 8.2 Inadequate consideration of hand-arm or foot-leg anatomy 4.9 4.8.3
5.2.2, 5.4.5, 6.3 8.7 Inadequate design, location or identification of manual controls 4.9 4.8.7, 4.11.8
5.2.2, 5.2.3 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
5.2.1, 5.2.3, 5.2.4, 5.2.5, 5.2.6 10.2 Uncontrolled Restoration of energy supply after an interruption
4.11.4
5.2.7, 5.4.6 to be continued
No
Hazards
EN ISO 12100
Relevant clause of this document
Part 1: 2003
Part 2: 2003
10.3 External influences on electrical equipment
4.11.11 5.4.4, 5.4.7 10.4 Errors in the software
4.11.7 5.2.1.2 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
5.4.5, 5.4.10, 6.3 11 Impossibility of stopping the machine in the best possible conditions
4.11.1, 4.11.3, 5.5.2
5.2.4, 5.2.5, 5.3.4 13 Failure of the power supply
4.11, 4.11.4
5.2.7 14 Failure of the control circuit
4.11, 5.5.4
5.2.8 15 Errors of fitting 4.9
4.7, 6.5 5.4.8, 6.2 16 Break-up during operation 4.2.2 4.3
5.3.2, 5.3.3.2, 5.3.3.4 17 Falling or ejected objects or fluids 4.2.2 4.3, 4.10
5.3.3, 5.3.5 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
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. In addition, the machine shall be designed in accordance with the requirements of the principles of EN ISO 12100-1:2003 for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges of the machine frame). For guidance in connection with risk reduction by design, see Clause 4 of EN ISO 12100-2:2003, and for safeguarding measures, see Clause 5 of EN ISO 12100-2:2003. SIST EN 1870-16:2005

EN 954-1:1996 or prEN ISO 13849:2004:  starting: category 1 or 3 (see 5.2.3);  normal stopping: category 1 or 3 (see 5.2.4);  emergency stop: category 1 or 3 (see 5.2.5);  interlocking: category 1 or 3 (see 5.2.3, 5.3.7);  interlocking with guard locking: category 1 or 3 (see 5.3.7);  prevention of access by mechanically actuated trip device (trip bar): category 1 or 3 (see 5.3.7);  control by two hand control device: category 1 or 3 (see 5.3.7);  prevention of access by pressure sensitive mats: category 1 or 3 (see 5.3.7);  prevention of access by active opto-electronic protective device (light barrier): category 1 or 3 (see 5.3.7);  mode selection: category 1 or 3 (see 5.2.6);  initiation of braking: category 1 or 3 (see 5.2.4, 5.2.5, 5.3.4);  powered workpiece clamping: category 1 (see 5.3.8.2). Where more than one category is given further information about the necessary type is specified in the quoted clauses. Any combination of safety related parts of control systems of different categories which achieve at least the same level of fault resistance is acceptable in accordance with the requirements of 6.3 of EN 954-1:1996. Where category 2 is requested categories 3 and 4 also fulfil the requirement, where category 3 is requested category 4 also fulfils the requirement. Where category B or 1 is requested categories 2, 3 and 4 also fulfil the requirement. NOTE For combination of safety-related parts to the same or different categories see 6.3 of EN 954-1:1996 or
6.3 of prEN ISO 13849-1:2004. For all components exposed to environmental conditions, e.g. dust, fumes and/or gases, these conditions shall be taken into account. Verification: By checking the relevant drawings and/or circuit diagrams and inspection of the machine. SIST EN 1870-16:2005

EN 60204-1:1997; d) mechanical components if, for example they operate in the positive mode in accordance with the description given in 4.5 of EN ISO 12100-2:2003; e) interlocking devices with guard locking if they comply with the requirements of 5.3.7; f) pneumatic components and systems if they comply with EN 983:1996; g) two-hand control devices if they are as a minimum in accordance with type IIIA or type III B (see 5.3.7) as defined in EN 574:1996; h) pressure sensitive mats if they are as minimum in accordance with type 2 as defined in EN 1760-1:1997 and if they are tested together with their associated control circuits at least at each starting of the machine; i) active opto-electronic protective devices (light barrier) if they are as minimum in accordance with type 2 as defined in CEN/TS 61496-2:2004 and if they are tested together with the associated control circuits at least at each starting of the machine; j) trip bars if they are as minimum in accordance with type 2 as defined in EN 1760-2:2001 and if they are tested together with their associated control circuits at least at each starting of the machine. NOTE For assessment of well-tried components, possible exclusion of faults etc. see EN ISO 13849-2:2003. Verification: By checking the relevant drawings and/or circuit diagrams and inspection of the machine. 5.2.1.3 Safety Related Electronic Control Systems (SRECS) 5.2.1.3.1 General For the implementation of any safety related function with electronic equipment the appropriate requirements of prEN ISO 13849-1:2004 shall apply. SIST EN 1870-16:2005

EN 61508-3:2001. Access to the embedded software of standard components shall not be possible. b) Application software Programming of the SRECS shall fulfil the instructions (technical manual) of the component’s manufacturer. SIST EN 1870-16:2005

62061:2003 (CDV IEC 62061:2003) edition 1 (document 44/441/CDV) shall be taken into account for the application software development. These requirements for application software may be achieved by use of techniques such as defensive programming, structured programming, modularity (i.e. logic/function blocks, sequence diagrams, etc.), re-use of software modules that satisfy the above requirements, depending of the programming tool available with the SRECS. It is recommended to apply pre-certified software modules (e.g. two-hand controls, emergency stop) if available. Verification: Verification has to be carried out against the specification(s) by checking relevant drawings and/or circuit diagrams, calculation, inspection. c) Validation A SRECS shall be validated to ensure that the specified machine safety function performance is achieved. This validation shall show that all parts interact correct to perform the safety function and that unintended functions do not occur. Validation of the SRECS shall be in accordance with the requirements of EN ISO 13849-2:2003, e.g. by checking the relevant drawings and/or diagrams, flow charts, simulation of faults, inspection, measurement and relevant functional testing on the machine. Validation includes the use of testing and analysis techniques (e.g. static, dynamic or failure analysis). These analysis techniques may be used to reduce the number of test cases. 5.2.2 Position of controls 5.2.2.1 Manual machines The main electrical control devices of the machine for starting the saw spindles, normal stopping and emergency stop (if provided) shall be located at the front side of the machine within 600 mm from the centre line of the V-cut and between a minimum height of 600 mm and a maximum height of 1 800 mm from the floor level on a fixed part of the machine e.g. frames or panels. The handle(s) to feed the saw unit(s) to the workpiece shall be in direct reach from the operator's position. Where a foot pedal is used to control powered workpiece clamping it shall be shrouded against unintentional activation. The force required to actuate the foot pedal shall not exceed 350 N. The switching device of the foot pedal shall be hardwired and the safety related parts of the control system shall conform to category 1 in accordance with the requirements of EN 954-1:1996. Verification: By checking the relevant drawings, measurement and inspection of the machine. SIST EN 1870-16:2005

at the front of the machine workpiece at a minimum height of 750 mm from the floor level. The controls for initiation of workpiece clamping, if not included as an integral part of the cutting cycle itself, shall be situated either: c) such that workpiece clamping initiation control can be actuated together with two hand control for cycle initiation at the same time; or d) within 400 mm measured horizontally of the two hand control device; or e) on a foot pedal integrated as part of the machine or as a separate item. Where a foot pedal is used for workpiece clamping initiation it shall be shrouded against unintentional activation. The force required to actuate the foot pedal shall not exceed 350 N. The foot pedal shall be hardwired and the safety related parts of the control system shall conform to category 1 in accordance with the requirements of EN 954-1:1996. See 5.3.8.2 for powered workpiece clamping. Verification: By checking the relevant drawings, measurement and inspection of the machine. 5.2.2.3 Automatic machines The main electrical control devices of the machine for starting the working cycle (including workpiece clamping and workpiece positioning), normal stopping, emergency stopping and the controls for the workpiece positioning device shall be located together and situated as follows: a) at the front of the machine at a minimum height of 600 mm and a maximum height of 1 800 mm from the floor level; or b) behind and above the fence, and within 850 mm measured horizontally from the front edge of the workpiece support and at a maximum height of 1
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