作业名称:PLC 控制电动机正反转可编程控制器(1)期末大作业摘 要三相异步电动机一般采纳降压起动、能耗制动
针对传统的继电器一接触器控制的降压起动、能耗制动方法存在的不足,将 OMRON 公司的 CPM2*型可编程序控制器(PLC)与接触器相结合,用于三相异步电动机的 Y 一△降压起动、能耗制动控制,改进后的方法克服了传统方法手工操作复杂且不够可靠的缺点,控制简单易行
关键词:三相异步电动机;PLC 控制系统; Abstructthe Three-phase asynchronous motor step-down start, generally USES the braking energy
In traditional relay a contact device control step-down start braking energy, the shortcomings of the methods, the company will CPM2 * type OMRON PLC and contactor, combining for three-phase asynchronous motor step-down start a train of Y, braking energy control, the improved method can overcome the disadvantage of traditional method manual operation complex and not reliable enough shortcomings, simple and easy to control
Key words: the three-phase asynchronous motor; PLC control system 引言设