IEC 60947-5-3:20 13系列提供了IEC 60947-5-2中给出的附加要求。它解决了故障条件下具有定义行为的接近设备的故障性能方面（PDDB）。它没有解决特定应用可能需要的任何其他特性。这第二版取代了1999年出版的第一版及其2005年出版的修正案。这是一次技术修订。与上一版相比，此版本包括以下重大技术变更: a)IEC 61508系列总则； b)按IEC 62061要求分类； c)根据ISO 13849-1进行分类。 本出版物应与IEC 60947-1:20 07和IEC 60947-5-2:20 07一起阅读。

IEC 60947-5-3:2013 series provides additional requirements to those given in IEC 60947-5-2. It addresses the fault performance aspects of proximity devices with a defined behaviour under fault conditions (PDDB). It does not address any other characteristics that can be required for specific applications. This second edition replaces the first edition published in 1999 and its amendment published in 2005. It is a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) general principles of IEC 61508 series;
b) classification according to the requirements of IEC 62061;
c) classification according to ISO 13849-1.

This publication is to be read in conjunction with IEC 60947-1:2007 and IEC 60947-5-2:2007.