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一、PC概况 传统的电气控制装置是采用各种各样的继电器、接触器和实现某一特定功能的电子器件为基本元件(称为“硬连线器件”),根据被控制设备的不同要求,先设计好电气控制原理图,再设计好器件布置图和配线图,然后经“硬连接组合而成的。采用“硬连线器件”组成电气控制装置必须根据被控设备的控制要求选用相应的“硬连线器件”及连线方式,组成特定的电器控制盘箱,这种控制装置的控制功能是专一的,不可变更
First, the PC Overview Traditional electrical control device is the use of a variety of relays, contactors and electronic devices to achieve a specific function as the basic components (referred to as “hardwired devices”), according to the different requirements of the controlled device , First design good electrical control schematic diagram, and then design a good device layout and wiring diagram, and then by the “hard wired combination.” The use of “hard wired devices” consisting of electrical control device must be controlled equipment requirements The corresponding “hardwired devices” and connections, the formation of specific electrical control panel, the control function of this control device is specific, can not be changed