电敏保护设备，第2部分:使用有源光电保护装置（AOPD）的设备的特殊要求UL 61496-21范围将第1部分的本条款替换为以下内容:IEC 61496的本部分规定了用于机械防护的电敏保护设备（ESPE）的设计、制造和测试要求，采用有源光电保护装置（AOPD）实现传感功能。特别注意确保实现适当安全相关性能的功能。ESPE可包括可选的安全相关功能，其要求见第1部分附录A。本部分未规定检测区域的尺寸或配置，以及与任何特定应用的危险零件相关的处理，也未规定任何机器的危险状态。 它仅限于ESPE的功能及其与机器的接口方式。本部分不包括使用波长在400 nm至1500 nm范围之外的辐射的AOPD。本部分可能与保护人员以外的应用有关，例如保护机械或产品免受机械损坏。在这些应用中，可能需要额外的要求，例如，当传感功能识别的材料与人的材料具有不同的特性时。本部分不涉及EMC发射要求。

Electro-Sensitive Protective Equipment, Part 2: Particular Requirements for Equipment Using Active Opto-Electronic Protective Devices (AOPDs)UL 61496-21 ScopeThis clause of part 1 is replaced by the following:This part of IEC 61496 specifies requirements for the design, construction and testing of ELECTRO-SENSITIVE PROTECTIVE EQUIPMENT (ESPE) for the safeguarding of machinery, employing ACTIVE OPTO-ELECTRONIC PROTECTIVE DEVICES (AOPDS) for the sensing function. Special attention is directed to features that ensure an appropriate safety-related performance is achieved. An ESPE may include optional safety-related functions, the requirements for which are given in annex A of part 1.This part does not specify the dimensions or configurations of the detection zone and its disposition in relation to hazardous parts for any particular application, nor what constitutes a hazardous state of any machine. It is restricted to the functioning of the ESPE and how it interfaces with the machine.Excluded from this part are AOPDS employing radiation at wavelengths outside the range 400 nm to 1 500 nm.This part may be relevant to applications other than those for the protection of persons, for example the protection of machinery or products from mechanical damage. In those applications additional requirements may be necessary, for example when the materials that are to be recognized by the sensing function have different properties from those of persons.This part does not deal with EMC emission requirements.