Implementation of PPC-SSR as final control element and interfacing of PLC with LabVIEW using Modbus in two tank non interacting level control system

Abstract

This paper demonstrates the capabilities of software intelligence against hardware intelligence, real-time data acquisition using third party instrument like PLC and PPC-SSR as final control element. The experimental setup is a two tank non-interacting level control system and from these tanks; level of second cylindrical tank is to be control using a feedback control loop i.e. single analog level control loop. In LabVIEW software, Modbus serial communication is used for developing an online real-time data acquisition. In the project model, software based PID is used instead of hardware based PID which has equal controlling capabilities, where primary control element is pressure transmitter for level measurement, PID module of LabVIEW as a controller, PLC as an interfacing media between LabVIEW software and system hardware and Phase angle control-SSR as final control element for controlling the flowrate of centrifugal lifting pump. In addition to that this paper will also touch upon the implementation issues. Moreover this setup portrays the industrial setup with future scope of domestic use.