1、 STDmBSI BS EN b053q-b-L-ENGL 1798 1b2Libb7 b70327 387 BRITISH STANDARD Industrial-process control valves Part 6. Mounting details for attachment of positioners to control valves Section 1. Positioner mounting on linear actuators The European Standard EN 6053441 : 1997 has the status of a British St
2、andard ICs 23.060.40 BS EN 60534-6-1 : 1998 IEC 60534-6-1 1997 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 60534-6-1 : 1998 AmdNo. Date This British Standard, having been prepared under the direction of the Electrotchnical Sector Board, was published under the author
3、ity of the Standards Board and comes into effect on 15 March 1998 Text affected O BSI 1998 ISBN O 680 29354 8 National foreword This British Standard is the English language version of EN 60-1 : 1997. It is identical with IEC 60534-6-1 : 1997. It partially supersedes BS 5793 : Part 6 : 1986, which i
4、s an identical standard to IEC 534-6 published by IEC in 1985. IEC 534-6 will be withrawn when IEC 60W2 is published at some future date. The UK participation in its preparation was entrusted by Technical Committee GEU65, Measurement and control, to Subcommittee GEU65I2, Elements of systems, which h
5、as the responsibility to: - aid enquirers to understand the text; - present to the responsible internationailEuropean committee any enquiries on the intepretation, or proposals for change, and keep the UK interests informed; - monitor relatecl international and European developments and promulgate t
6、hem in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the cha
7、nge over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC standards nonnally include an annex which lists nomative references to international publications with their corresponding Eur
8、opean publications. The British Standards which implement these intedonal or European publications may be found in the BSI Standards Catalogue under the section entitled Intedonal Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Stand
9、ard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a b) those whic
10、h use some form of central tube yoke to connect the actuator power unit to the valve; c) those in which the yoke incorporates two or more columns or pillars to connect the actuator power unit to the valve. 2 Definitions For the purpose of this section of IEC 60534-6, the definitions given in the oth
11、er parts of IEC 60534 apply. 3 Basic design principles The objective is to standardize the attachment of the positioner to the side of the actuator to assure compatibility of products from different manufacturers. 3.1 For this purpose, the manufacturer of the actuator shall observe the design criter
12、ia described in figures 1 through 4. Such criteria consist of one or more of the following attachment means provided on the actuator yoke: a) one or more suitable rib(s) with fixing hole(s) (see figure le): b) a plane surface allowing the mounting of the positioner by means of two or more of the fou
13、r outer threaded holes (see figure 2c); c) a suitable shape allowing the fastening of the mounting plate by means of U-bolts as indicated in figure 3c. Page 5 EN 60534-6-1 : 1997 It is recommended that two means of the attachment of the same design be provided on both sides of the yoke in order to a
14、llow the reversal of positioner mounting from one side to the other side. However, if the actuator yoke can be turned by 180“ without any change, then one side only attachment means may be provided. 3.2 The design of the positioner mounting shall assure: a) correct positioning of the positioner in r
15、elation to the actuator stem; b) rigid mounting of the positioner. 3.3 The manufacturer of the positioner may design a positioner incorporating a means of attachment compatible with this standard. Alternatively, a separate mounting plate may be supplied which is compatible with the standardized moun
16、ting. 4 Feedback connection In order to standardize the feedback attachment to the actuator, a connection piece shall be provided which shall have four threaded holes tapped M6 surrounded with a bearing area of at least 10 mm diameter for each hole (see figure 2). The remaining design of the feedbac
17、k attachment is not specified and may be designed to meet the requirements of each manufacturer. If the design permits the connection piece to be rotated through 180“, only two threaded holes, on one side only, need be provided. The manufacturer of the positioner shall provide adequate means of tran
18、smitting the motion of the actuator stem to the positioner by use of the above connection piece. 5 Mounting plate design The positioner shall either incorporate the attachment means for the direct mounting or be provided with a mounting plate in accordance with the details given in figure 4. It shou
19、ld be noted that only the standardized details are given. Details such as material thickness to provide rigidity and design of mounting means of the positioner have not been standardized. The design of the mounting plate shall ensure sufficient contact with the rib or plane surface to ensure that th
20、e objective of 3.2b) is attained. 6 Actuator yoke mounting The actuator yoke shall be provided with one of the following means for mounting the positioner: a) ribs of the cross-section shown in figure le and relative position shown in figures la, lb and IC; b) two U-bolts as shown in figures 3c and
21、5 provided that the diameter of the supporting pillars is between 20 mm and 35 mm; c) any two of the outer fixing holes in the bracket on a suitable surface. Page 6 EN 60634-6-1 : 1997 i I 60 min. 1, / 52,5 min. - 60 min. d Rib design 100 I I I I I l I I I I I l l I 1 I -i fi I l I 40 to 110- Plane
22、surface design I I I- - I 35to105 A-A IEC l(KI7B7 Dimensions in millimetres NOTE - The feedback connection is shown at mid-travel of the stem. Figure la - Cast or fabricated yoke design Figure 1 - Dimensions of standardized actuators STD-BSI BS EN b0534-b-1-ENGL 1998 m lb24bb7 b90337 453 m Page 7 EN
23、 60534-6-1 : 1997 I I I I 60 min. I I I Rib design 1 O0 I Plane sudace l I I l max. 1 design 40 to 110 hi-1 35 to 105 A-A IEC TO9 Fax: O181 996 7400. BSI offers members an individuai updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. B
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