基于 PLC 的电动机综合控制摘要 本论文文设计了三相异步电动机的 PLC 控制电路，就是三相异步电动机的正反转控制，与传统的继电器控制相比，具有控制速度快、可靠性高、灵活性强等优点。非常有用。三相异步电动机的应用非常广泛，具有机构简单，效率高，控制方便，运行可靠，易于维修成本低的有点，几乎涵盖了工农业生产和人类生活的各个领域,在这些应用领域中,三相异步电动机运行的环境不同，所以造成其故障的发生也很频繁，所以要正确合理的利用它。本文讨论的这个系统的控制是采纳 PLC 的编程语言----梯形图,梯形语言是在可编程控制器中的应用最广的语言，因为它在继电器的基础上加进了许多功能，使用灵活的指令，使逻辑关系清楚直观，编程容易，可读性强，所实现的功能也大大超过传统的继电器控制电路，可编程控制器是一种数字运算操作的电子系统，它是专为在恶劣工业环境下应用而设计，它采纳可编程序的存储器，用来在内部存储执行逻辑运算，顺序控制，定时，计数和算术等操作的指令，并采纳数字式，模拟式的输入和输出，控制各种的机械或生产过程。关键词： PLC 三相异步电动机 可编程控制 梯形图 I下载后可任意编辑Plc control with a asynchronous motor controlAbstract This paper designed the three-phase asynchronous motor PLC control circuit, is a three-phase asynchronous motor positive inversion control, compared with the traditional relay control, with high speed, high reliability, flexibility and other advantages. Very practical. The three-phase asynchronous motor is widely used, has the advantages of simple mechanism, high efficiency, easy control, reliable operation, easy to repair and low cost a little, almost covers the industrial and agricultural production and all aspects of human life, in these applications, three-phase asynchronous motor running in different environments, so the fault occurrence is also very frequently, so a correct and reasonable use of it. This paper studies the system control is the use of PLC programming language - ladder, ladder language is in the programmable controller...
