基于S7-300 PLC呼吸法真空烘干箱控制系统的设计

The Design of Beathing Vcuum Dying Box Control System based on S7-300 PLC

摘要:

针对传统烘干设备存在效率低、箱体分离等问题,提出了一种基于西门子S7-300 PLC的呼吸法真空烘干法,并设计了呼吸法真空烘干控制系统。系统以管路加热和箱体加热为基础,利用WINCC、MP-277 HMI触摸屏和S7-300 PLC结合对所采集的温度信号进行分析,然后依次完成烘干箱加热、吹除和抽真空等工作流程。最后将压力、温度和时间等运行参数保存至工控上位机上。经现场调试,本设计方案可行、稳定,具有一定的实用性。

Abstract:

The traditional drying equipment low efficiency exist, cabinet separation problem, based on Siemens S7-300 PLC vacuum drying method of breathing, and breathing designed vacuum drying control systems. Heating system piping and tank heating based on the use WINCC, MP-277 HMI touch screen and S7-300 PLC combination of temperature signals collected for analysis, followed by complete drying oven heating, blowing and vacuum, etc. Process. Finally, the preservation of pressure, temperature and time parameters are stored on the industrial PC. Industrial field applications shows that this design scheme is feasible, stable, and has a certain practicality.