捆扎机采用继电-接触器控制系统，功能单一，存在多种缺点。在分析控制要求的基础上，采用西门子S7-200可编程控制器。设计了捆扎机主电路图、PLC输入输出连接电路图和制动及加热电路。完成了捆扎机循环工作流程图和相应梯形图程序。对PLC控制系统进行线路连接和机电联调，捆扎机能实现手动、自动、连续3种功能，达到控制要求。%The strapping machine adopts relay-contactor control system, has many disadvantages, and has single function. On the basis of the analysis and control requirements, the SIEMENS S7-200 programmable controller was adopted. The main circuit diagram of the strapping machine, the PLC input and output connection circuit diagram, the brake and the heating circuit were designed. The cycle flow chart and the ladder chart program of the strapping machine were completed. PLC control system for line connection and the electrical-mechanical alignment, the strapping machine can achieve manual, automatic and continuous 3 functions, to meet the control requirements.
展开▼
