摘要
基于CPU314C-2DP为主机的S7-300 PLC为核心控制器件,充分利用S7-300PLC的编程容易和集成度高等优点,通过PROFIBUS DP总线完成其与SIMATIC HMI和6SE70矢量变频器的组态,实现PLC、SIMATIC HMI、变频器对交流电机进行闭环控制,以及不同转速之间的平滑过渡。本文通过简略介绍设计全过程,为读者深入研究通过PLC300连接SIMATIC HMI直接控制变频器的交流调速打下了良好的基础。
The main introduction based on CPU314C-2DP as the host of the S7-300 PLC as the core control device, taking advantage of S7-300 PLC programming easy and anti- jamming ability, etc., via the PROFIBUS DP bus to complete its configuration with SIMATIC HMI and 6SE70 vector inverter, Achieving the Iosed-loop control between PLC, flexible wincc,inverter and AC motor, as well as smooth transition between different speed. By introducing the schematic design process, it has laid a good foundation, for the readers in deep study by the PLC300 connection SlMATIC HMI AC speed control inverter directly.
