前言这是低压开关设备和控制设备的协调CSA组和UL标准-第5-2部分:控制电路设备和开关元件-接近开关。它是CSA C22.2第二版60947-5-2号和UL 60947-5-2第四版。本版CSA C22.2 No.60947-5-2取代了2014年发布的前一版CAN/CSA-C22.2 No.60947-5-2。本协调标准基于2012年9月发布的IEC出版物60947-5-2:3.1版《低压开关设备和控制设备-第5-2部分:控制电路设备和开关元件-接近开关》。IEC 60947- 5-2受IEC版权所有。本协调标准由CSA集团和美国保险商实验室有限公司（UL）编制。感谢美洲国家电工标准协调理事会工业控制设备技术协调委员会（CANENA）的努力和支持。本标准被认为适用于本标准规定范围内的合格评定。本标准由CSA工业控制综合委员会审查，由CSA工业产品技术委员会和CSA电气安全要求战略指导委员会管辖，并已由CSA技术委员会正式批准。 本标准是根据加拿大标准委员会对加拿大国家标准的要求制定的。CSA集团已将其发布为加拿大国家标准。总则IEC 60947-1中通则的规定适用于本标准，具体要求如下。因此适用的一般规则条款和子条款以及表格、图和附录通过参考IEC 60947-1进行识别，例如IEC 60947-1的子条款7.1.9.3或IEC 60947-1的附录C。第1至8条包含一般要求。附录A中给出了各种接近开关的具体要求。 1DV D2通过添加以下内容对第1条进行修改:附录DVA定义了本标准中被视为规范性、信息性或不适用的具体条款、表格和图形。必须遵守规范性条款、表格和数字；符合信息性条款、表格和图表是可选的。1.1范围和目标IEC 60947的本部分适用于感应和电容接近开关，感应金属和/或非金属物体的存在，超声波接近开关，感应声音反射物体的存在，光电接近开关，感应物体和非金属物体的存在- 机械磁性接近开关，用磁场感应物体的存在。这些接近开关是独立的，具有半导体开关元件，拟连接到额定电压不超过250 V 50 Hz/60 Hz a.c.或300 V d.c.的电路。本标准不适用于具有模拟输出的接近开关。本标准的目的是说明接近开关:-定义；-分类；-特征；-产品信息；-正常服务、安装和运输条件；-结构和性能要求- 验证额定特性的试验。1.1DV D2通过添加以下内容对1.1进行修改:本设备拟用于根据加拿大CSA C22.1、加拿大电气规范（CE规范，第一部分）和CSA C22.2第301号以及美国NFPA 70、国家电气规范（NEC）和NFPA 79定义和安装的工业机械或批量生产工业设备。

PrefaceThis is the harmonized CSA Group and UL standard for Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches. It is the second edition of CSA C22.2 No. 60947-5-2, and the fourth edition of UL 60947-5-2. This edition of CSA C22.2 No. 60947-5-2 supersedes the previous edition published in 2014 as CAN/CSA-C22.2 No. 60947-5-2. This harmonized standard is based on IEC Publication 60947-5-2: Edition 3.1, Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches, issued September 2012. IEC 60947-5-2 is copyrighted by the IEC. This harmonized standard was prepared by CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Committee for Industrial Control Equipment, of the Council on the Harmonization of Electrotechnical Standards of the Nations of the Americas (CANENA), are gratefully acknowledged.This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the CSA Integrated Committee on Industrial Control, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. General The provisions of the general rules in IEC 60947-1 are applicable to this standard, where specifically called for. General rules clauses and subclauses thus applicable, as well as tables, figures and appendices, are identified by references to IEC 60947-1, e.g. subclause 7.1.9.3 of IEC 60947-1 or Annex C of IEC 60947-1. Clauses 1 to 8 contain the general requirements. Specific requirements for the various types of proximity switches are given in Annex A. 1DV D2 Modification of Clause 1 by adding the following: Annex DVA defines the specific clauses, tables, and figures in this standard which are to be considered normative, informative, or not applicable. Compliance with the normative clauses, tables, and figures is mandatory; compliance with the informative clauses, tables, and figures is optional.1.1 Scope and object This part of IEC 60947 applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field. These proximity switches are self-contained, have semiconductor switching elements(s) and are intended to be connected to circuits, the rated voltage of which does not exceed 250 V 50 Hz/60 Hz a.c. or 300 V d.c. This Standard is not intended to cover proximity switches with analogue outputs.The object of this standard is to state for proximity switches:- definitions;- classification;- characteristics;- product information;- normal service, mounting and transport conditions;- constructional and performance requirements;- tests to verify rated characteristics.1.1DV D2 Modification of 1.1 by adding the following: This equipment is intended for use on industrial machinery or mass production industrial equipment as defined and installed in accordance with CSA C22.1, Canadian Electrical Code (CE Code, Part I), and CSA C22.2 No. 301 in Canada, and NFPA 70, National Electrical Code (NEC), and NFPA 79 in the USA.