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SUL 60947-5-21.1范围和目的本部分IEC 60947适用于感应金属和/或非金属物体存在的感应和电容接近开关，感应声音反射物体存在的超声波接近开关，感应物体存在的光电接近开关和感应有磁场物体存在的非机械磁性接近开关。这些接近开关是独立式的，具有半导体开关元件，并用于连接到额定电压不超过250 V 50 Hz/60 Hz交流或300 V直流的电路。本标准不适用于带有模拟输出的接近开关。 本标准旨在说明接近开关:定义；分类特点；产品信息；正常服务、安装和运输结构和性能要求；验证额定特性的试验。1.1DV。1通过添加1.1dv对1.1进行修改。1.1-1.1dv。1.2:1.1DV。1.1根据附录101，本设备用于普通场所。dvb，参考号1。在加拿大，适用于该设备的一般要求见表101的参考7。dvb。1.1DV。1.2这些要求包括附录101中定义的用于工业机械或大规模生产工业设备的电子接近开关。dvb，参考号4。 1.1DV。2修改1.1，添加以下内容:除非另有规定，否则设备要求适用于0至40°C的环境温度。 否则

Low-Voltage Switchgear and Controlgear - Part 5-2: Control Circuit Devices and Switching Elements - Proximity SwitchesUL 60947-5-21.1 Scope and objectThis 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 transportconstructional and performance requirements;tests to verify rated characteristics.1.1DV.1 Modification of 1.1 by adding 1.1dv.1.1 - 1.1dv.1.2:1.1DV.1.1 This equipment is for use in ordinary locations in accordance with Annex 101.dvb, Reference No. 1. In Canada, general requirements applicable to this equipment are provided in Reference No. 7 of Table 101.dvb.1.1DV.1.2 These requirements cover electronic proximity switches for use on industrial machinery or mass-production industrial equipment as defined by Annex 101.dvb, Reference No. 4. 1.1DV.2 Modification of 1.1 by adding the following:Equipment requirements are intended for use in an ambient temperature of 0 to 40° C unless specified.otherwise.