基于S7-300 PLC的焊管生产线活套控制系统设计

Application of S7-300 PLC in the Accumulator Control System of Tube-Welding Production Line

针对焊管生产线活套控制的工艺要求,设计了基于S7-300 PLC的活套控制系统,它和剪切对焊机配合,起到确保主轧机连续不断工作的作用.系统由PLC,触摸屏,欧路直流驱动器等组成,通过PLC与欧路直流驱动器之间的PROFIBUS通讯,实现了数字量设定转速,实时显示电动机的电流,转速等参数.提出了焊管生产线连续生产时活套控制系统自动充放料的原理及流程图,提出了焊管生产线活套的储料长度及储料圈数最大值的计算算法.经过韩国SEAH公司等很多现场的应用,验证了活套控制系统的可靠性和稳定性.

According to the technology requirements of accumulator control, accumulator control system is designed based on the S7-300 PLC , and it cooperates with cutting and welding equipment to ensure itself play a main role in the work of the continuous rolling mill. Accumulator control system consists of the PLC, touch screen, Parker DC driver. Using profibus communication in the accumulator control systems, the speed can be set through touch screen, and it can display armature current and real-time speed. In this paper, the principle of filling the steel coil to accumulator automatically and flow chart of automatic accumulator control system are put forward and steel coil length of storage and storage ring of accumulator algorithm are put forward too. After a lot of applications, it is verified that control system of accumulator is feasible and reliable.