Diseño e implementación de un sistema automático de control de nivel y operación de bombas para planta de tratamiento de aguas residuales mediante PLC y HMI

Abstract

This paper describes the design and implementation of an automatic control system for monitoring tank levels and alternating pump operation using an Allen-Bradley Micro850 PLC, a PanelView C400 HMI interface, and a PowerFlex 525 frequency converter. The automation of this type of process reduces equipment wear and tear and ensures the safe operation of the fluid storage and transfer system. The PLC is responsible for executing control logic based on the tank level conditions, allowing the start, stop, and alternation of pumps to optimize their use and extend their useful life. The HMI interface facilitates real-time monitoring of the system, displaying the tank level and operating statuses and allowing operator interaction through manual and automatic control of the process. The development of the system includes the configuration of industrial communication between devices, the programming of control logic in the PLC, the design of the HMI graphical interface, and the implementation of monitoring and control functions, resulting in a reliable, efficient, and easy-to-operate automated system.