1、BRITISH STANDARDBS EN 60950-23:2006Information technology equipment Safety Part 23: Large data storage equipmentICS 35.020; 29.020g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g5
2、1g60g53g44g42g43g55g3g47g36g58Incorporating rrigendumOctober 2008coThis British Standard was published under the authority of the Standards Policy and Strategy Committee on National forewordThe UK participation in its preparation was entrusted to Technical Committee A list of organizations represent
3、ed on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corr
4、igenda issued since publicationDate CommentsBS EN 60950-23:2006This British Standard is the UK implementation of EN 60950-23:2006, incorporating corrigendum October 2008. It is identical with IEC 60950-23:2005.EPL/108, Safety of electronic equipment within the field of audio/video,information techno
5、logy and communication technology.31 March 2009Implementation of CENELEC corrigendum October 2008.Date of withdrawal of national conflicting standards has been changed31 May 2006 BSI 2009ISBN 978 0 580 65618 7EUROPEAN STANDARD EN 60950-23 NORME EUROPENNE EUROPISCHE NORM April 2006 CENELEC European C
6、ommittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENE
7、LEC members. Ref. No. EN 60950-23:2006 E ICS 35.020; 29.020 Incorporating corrigendum October 2008English version Information technology equipment - Safety Part 23: Large data storage equipment (IEC 60950-23:2005) Matriels de traitement de linformation - Scurit Partie 23: Matriels de grande taille p
8、our le stockage des donnes (CEI 60950-23:2005) Einrichtungen der Informationstechnik - Sicherheit Teil 23: Groe Einrichtungen zur Datenspeicherung (IEC 60950-23:2005) This European Standard was approved by CENELEC on 2005-12-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regul
9、ations 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 Central Secretariat or to any CENELEC member. Thi
10、s European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC member
11、s are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, S
12、weden, Switzerland and the United Kingdom. 60950-23:2006 - 2 - Foreword The text of document 108/144/FDIS, future edition 1 of IEC 60950-23, prepared by IEC TC 108, Safety of electronic equipment within the field of audio/video, information technology and communication technology, was submitted to t
13、he IEC-CENELEC parallel vote and was approved by CENELEC as EN 60950-23 on 2005-12-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-12-01 latest date by which the nati
14、onal standards conflicting with the EN have to be withdrawn (dow) 2010-12-01 This Part 23 of EN 60950 is intended to be used with EN 60950-1. The subclauses of EN 60950-1 apply as is reasonable. Where safety aspects are similar to those of Part 1, the relevant Part 1 clause or subclause is shown for
15、 reference in parentheses after the clause or subclause title in Part 23. Where a requirement in Part 23 refers to a requirement or criterion of Part 1, a specific reference to EN 60950-1 is made. EN 60950 consists of the following parts, under the general title Information technology equipment Safe
16、ty: Part 1: General requirements; Part 21: Remote power feeding; Part 22: Equipment installed outdoors; Part 23: Large data storage equipment. In this standard, the following print types are used: requirements proper and normative annexes: roman type; compliance statements and test specifications: i
17、talic type; notes in the text and in tables: smaller roman type; terms that are defined in Clause 2 and in EN 60950-1: SMALL CAPITALS. Annex ZA has been added by CENELEC. _ BS ENEndorsement notice The text of the International Standard IEC 60950-23:2005 was approved by CENELEC as a European Standard
18、 without any modification. _ 60950-23:2006BS EN - - 3BS EN 60950-23:2006CONTENTS 1 2 3 4 5 5.1 5.2 6 7 8 Annex ZA (normative) Normative references to international publications with their 4 Scope 5 Normative references .5 Terms and definitions .6 Protection of persons in the work cell6 Interlock ove
19、rride7 General .7 Visual indicator7 Emergency stop system7 Endurance tests .9 Abnormal operation 10corresponding European publications12 Bibliography .11 INFORMATION TECHNOLOGY EQUIPMENT SAFETY Part 23: Large data storage equipment 1 Scope This part of IEC 60950 specifies requirements for informatio
20、n technology equipment (ITE) with self contained data storage systems that contain hazardous moving parts. These data storage systems are typically large enough to permit a person to enter completely, however, the systems also include similar large equipment permitting complete limb or head access t
21、o the area containing hazardous moving parts. These requirements are additional to the relevant requirements in IEC 60950-1. The maximum three dimensional reach of a cartridge accessory assembly typically has a minimum motion envelop of 0,75 m3or more. The equipments shall be installed in a RESTRICT
22、ED ACCESS LOCATION, such as a data centre. The exceptions for 2.1.3 and 4.5.4 noted in 1.2.7.3 of IEC 60950-1 do not apply to this Part 23. NOTE 1 An example of equipment covered by this scope is an automated information mass storage and retrieval system that uses integral hazardous moving parts for
23、 the handling of recorded media (for example, tape cartridges, tape cassettes, optical disks, etc.) and similar functions. This standard is not applicable to equipment with non-self-contained hazardous moving parts, such as robotic equipment installed in an industrial environment. NOTE 2 For standar
24、ds related to robotic equipment in an industrial environment, see IEC 60204-1, IEC 60204-11 and ISO 10218. 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, t
25、he latest edition of the referenced document (including any amendments) applies. IEC 60947-5-5:1997, Low-voltage switchgear and controlgear Part 5-5: Control circuit devices and switching elements Electrical emergency stop device with mechanical latching function IEC 60950-1:2005, Information techno
26、logy equipment Safety Part 1: General requirements IEC 60073:2002, Basic and safety principles for man-machine interface, marking and identification - Coding principles for indicators and actuators IEC 61058-1, Switches for appliances Part 1: General requirements 5 BS EN 60950-23:20063 Terms and def
27、initions For the purposes of this document, the terms and definitions given in IEC 60950-1 and the following apply. NOTE Defined terms are printed in SMALL CAPS where they occur in the text. 3.1 work cell space within the equipment of such size that a person may completely or partially (for example,
28、 entire limb or head) enter and where mechanical hazards may be present NOTE A WORK CELL may contain more than one compartment. A compartment can be used for either operational or service purposes. 4 Protection of persons in the work cell During normal use, no hazards within the meaning of IEC 60950
29、-1 shall be accessible at an outer ENCLOSURE of the equipment. The equipment shall be provided with safeguards to reduce the risk of injury due to hazardous moving parts in the WORK CELL. For protection against other hazards, the WORK CELL shall be treated as an OPERATOR ACCESS AREA. NOTE 1 Examples
30、 of safeguards include interlocks, barriers and awareness signals, together with designated procedures and training. NOTE 2 The design should take into account the fact that some authorities may require installation of fire detection and extinguishing systems in WORK CELLS. Access to a WORK CELL or
31、any of its compartments shall be controlled by either of the following methods: Method 1 No key or TOOL is needed to gain entry to the WORK CELL. Interlocks meeting the requirements of 2.8 of IEC 60950-1 shall be provided to prevent access to the WORK CELL while power is available to the hazardous m
32、oving parts in that compartment. Power to the moving parts shall not be restored until the doors are closed and latched. Method 2 A key or TOOL shall be used to gain and control access to the WORK CELL, and access to the WORK CELL shall be prevented while power is available to the hazardous moving p
33、arts in that compartment. The operating and servicing instructions, as appropriate, shall specify that the key or TOOL must be carried by the person while in the WORK CELL. NOTE 3 The key or TOOL may be used as the means to remove power before access to the WORK CELL or compartment. Opening of the i
34、nterlocked access door into any compartment of a WORK CELL containing hazardous moving parts, or an access door between a compartment containing hazardous moving parts and one that has been disabled, shall automatically remove drive power from those moving parts and fully stop them without the need
35、of software control within 3 s. Except as permitted in 5.1, it shall not be possible to start or restart the system until all relevant access doors are closed and latched. 6 BS EN 60950-23:2006Where it is possible to enter a WORK CELL completely, an automatically activated mechanical interlock shall
36、 be provided so that the door cannot be closed inadvertently, if this closure would allow the system to be restarted. It shall be possible to open any door from inside the WORK CELL without the use of a key or TOOL. The means of opening the door from inside the WORK CELL shall be readily identifiabl
37、e and visible, whether the door is open or closed, irrespective of the operating status of the equipment. Compliance is checked by inspection. 5 Interlock override 5.1 General If it is necessary for a SERVICE PERSON to override a SAFETY INTERLOCK for access to a WORK CELL or compartment, an override
38、 system complying with 2.8.6 of IEC 60950-1 shall be provided. In addition, when an override system is used, an emergency stop system shall be provided in accordance with Clause 6, and shall comply with the operational endurance requirements of Clause 7. Compliance is checked by inspection. 5.2 Visu
39、al indicator A set of two or more bright flashing indicators complying with IEC 60073 shall operate under the following conditions: a) for a WORK CELL or compartment that can be entered completely, to indicate the equipment is being restored to normal operation and motion is pending, or b) for any e
40、quipment, when the interlock is overridden and drive power is available to hazardous moving parts. The indicators shall be readily visible at any point within the WORK CELL or relevant compartment, and at the point of entry. For condition a), the indicators shall operate for a minimum of 10 s prior
41、to movement of a hazardous moving part along the most significant axis. If condition a) can occur while condition b) is in effect, there shall be a change of light sequencing such that the change in status will be obvious to persons in or at the point of entry to the WORK CELL. NOTE The most signifi
42、cant axis is usually the horizontal (X) axis. Compliance is checked by inspection and test. 6 Emergency stop system This clause only applies if a SAFETY INTERLOCK override is provided as specified in Clause 5. An emergency stop system shall override all other controls, remove drive power from hazard
43、ous moving parts and employ automatic braking, if necessary, to cause all these moving parts to stop. 7 BS EN 60950-23:2006Components of the emergency stop system shall be of an electromechanical type. An emergency stop control may consist of: a switch complying with IEC 61058-1, that also meets the
44、 requirements of 2.8.4, 2.8.7, 2.8.8 of IEC 60950-1, and that is provided with a latching type mechanism meeting the requirements of IEC 60947-5-5, or equivalent, or an emergency stop device in accordance with IEC 60947-5-5. NOTE 1 In the United Kingdom an emergency stop system complying with the re
45、quirements of IEC 60204-1 and ISO 13850 is required where there is a risk of personal injury. Restarting of the mechanical system shall only be possible by initiating a start control procedure after the emergency stop control has been manually reset. For equipment where a person may completely enter
46、 the WORK CELL, the emergency stop system shall include a minimum of two emergency stop controls, one outside the WORK CELL and one within the WORK CELL. The system start up procedure shall include a non-hazardous method to ensure no person is present in the WORK CELL. If it can be shown, after appl
47、ication of the 7.1 single fault tests to the movement control circuitry or other sensing means, that such tests do not by-pass the non-hazardous start up procedure, the emergency stopping distance test of this subclause is not required. For equipment where a person may only partially enter a WORK CE
48、LL or compartment, a minimum of one emergency stop control shall be provided outside of the WORK CELL. The emergency stop system shall be operable by the person needing to have access to the WORK CELL. An emergency stop control provided outside the WORK CELL shall be readily visible and shall be loc
49、ated on the equipment such that the person operating it can see if the WORK CELL is occupied. The installation instructions shall require that space be provided around the control so that an OPERATOR or SERVICE PERSON can easily reach and activate it. An emergency stop control provided inside the WORK CELL shall be readily accessible from anywhere inside the WORK CELL and shall be provided with lighting to permit easy identification. It shall consist of a red palm or mushroom head button or be provide
