本文件规定了与防护装置相关的联锁装置的设计和选择原则（独立于能源的性质），并提供了以合理可预见的方式尽量减少联锁装置失效可能性的措施指导。 本文件涵盖了以下设计、选择和应用的原则: --驱动联锁装置的防护装置部件； --用于机械应用的闭锁钥匙装置和系统。 注:ISO 14120规定了主要用于保护人员免受机械危险的防护装置的设计和构造的一般要求。ISO 14118、ISO 13849-1和IEC 62061涵盖了联锁装置的信号处理，以停止机器并防止意外启动。

This document specifies principles for the design and selection (independent of the nature of the energy source) of interlocking devices associated with guards and provides guidance on measures to minimize the possibility of defeat of interlocking devices in a reasonably foreseeable manner. This document covers principles for the design, selection and application of the following: —     parts of the guards which actuate interlocking devices; —     trapped key interlocking devices and systems for machinery applications. NOTE            ISO 14120 specifies general requirements for the design and construction of guards provided primarily to protect persons from mechanical hazards. The processing of the signal from the interlocking device to stop the machine and prevent unexpected start up is covered in ISO 14118, ISO 13849-1 and IEC 62061.