“故障-安全”原理在电梯安全功能电路设计上的应用  

A Brief Discussion of"Fail-Safety"Principle and Its Typical Application on Safety Function Circuit

作　　者：陈华[1] Chen Hua(Special Equipment Safety Supervision Inspection Institute of Jiangsu Province,Nanjing 210036)

机构地区：[1]江苏省特种设备安全监督检验研究院,南京210036

出　　处：《中国特种设备安全》2021年第10期37-40,70,共5页China Special Equipment Safety

摘　　要：本文以电梯ST0安全功能电路为实例,介绍“故障-安全”原理和相关设计要求,重点探讨“组合式故障-安全”及“反应式故障-安全”在电梯ST0安全电路设计中的应用,分析由双通道实现“组合式故障-安全”的内在逻辑和电路构架,给出通过输入通道实时检测、通道上电检测、微处理器实时检测和电源实时监控实现“反应式故障-安全”的方法,为电梯安全电路的设计提供思路。Taking the elevator STO safety function circuit as an example,this paper discusses the"Fail-Safbty"related design requirements,focuses on the application of"Composite fail-safety"and"Reactive fail-safety"in the design of elevator STO safety circuit.The internal logic and circuit architecture of realizing"Composite fail-safety"by dual channels are analyzed.The method of"Reactive fail-safety"is realized by channel power on detection,microprocessor real-time detection and power real-time monitoring.The ideas for the design of elevator safety circuit are provided.

关 键 词：电梯 故障-安全 功能安全 安全力矩关闭 

分 类 号：X941[环境科学与工程—安全科学]