D4C-3324 D4C-3231 D4C-3331原装欧姆龙限位开关

限位开关的工作原理和用途主要有哪些

限位开关就是用以限定机械设备的运动极限位置的电气开关。限位开关有式的和非式的。式的比较直观，机械设备的运动部件上，安装上行程开关，与其相对运动的固***上安装极限位置的挡块，或者是相反安装位置。当行程开关的机械触头碰上挡块时，切断了（或改变了）控制电路，机械就停止运行或改变运行。由于机械的惯性运动，这种行程开关有一定的“超行程”以保护开关不受损坏。非式的形式很多，常见的有干簧管、光电式、感应式等，这几种形式在电梯中都能够见到。当然还有更多的***形式。
限位开关可广泛应用于建筑、港口、矿山等行业的起重、传输机械的空间三坐标的控制和限位，限位开关由高精度的大传动比减速器和与其输出轴同步的机械记忆控制机构、传感器组成，因WTAU系列限位开关具有体积小、功能多、精度高、限位可调、通用性强及安装和使用方便等特点在工程机械中应用***广泛。

限位开关就是以限定机械设备的运动极限位置的电气开关。它主要可以分为两种，式的和非式的。

限位开关 又称行程限位开关，用于控制机械设备的行程及限位保护。在实际生产中，将行程限位开关安装在预先安排的位置。

限位开关分工作限位开关和极限限位开关，工作限位开关是用来给出机构到位的。极限限位开关是防止机构超出设计范围而发生事故的。

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