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BS EN IEC 60947-5-8:2021 – TC:2022 Edition

BS EN IEC 60947-5-8:2021 – TC:2022 Edition

$217.84

Tracked Changes. Low-voltage switchgear and controlgear – Control circuit devices and switching elements. Three-position enabling switches

Published By Publication Date Number of Pages
BSI 2022 80
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IEC 60947-5-8:2020 is available as IEC 60947-5-8:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60947-5-8:2020 specifies requirements for three-position enabling switches. These switches are used as components of enabling devices to provide signals that, – when activated, allow machine operation to be initiated by a separate start control, and – when de-activated, — initiate a stop function, and — prevent initiation of machine operation. This second edition cancels and replaces the first edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – due to the increasing range of useful applications of three-position enabling switches, note of scope, operational characteristics and tests are reviewed; – figures for example of devices incorporating enabling switch are added in Annex A; – new Annex B for procedure to determine reliability data for the switch used in functional safety applications is added.

PDF Catalog

PDF Pages PDF Title
1 30454148
47 A-30363021
48 undefined
53 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
54 Annex ZZ (informative)Relationship between this European standard and the safety objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be covered
55 English
CONTENTS
56 FOREWORD
58 1 Scope
2 Normative references
59 3 Terms and definitions
60 4 Classification
5 Characteristics
61 6 Product information
62 7 Normal service, mounting and transport conditions
63 8 Constructional and performance requirements
65 Figure 1 – Operation of three-position enabling switches
66 Figure 2 – Operating force, travel and enabling contact status
Table 1 – Force values for F2
67 9 Tests
74 Annex A (informative) Example of enabling devices incorporating a three-position enabling switch
Figure A.1 – Grip type enabling device
Figure A.2 – One hand teaching pendant type enabling device
75 Figure A.3 – Two hand teaching pendant type enabling device
Figure A.4 – Manual pulse generator
Figure A.5 – Grip type enabling device for hand-held machine
76 Figure A.6 – Foot actuated enabling device
Figure A.7 – Hoist controller
Figure A.8 – Joystick type enabling device
77 Annex B (normative) Procedure to determine reliability data for three-position enabling switches used in functional safety applications
78 Bibliography

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BS EN IEC 60947-5-8:2021 - TC
$217.84