TEMPERATURE ON-OFF CONTROL STRATEGY USING THE FX3U24M PLC AND DATA SUPERVISION

Abstract

The objective of this paper is to assemble a thermal prototype and evaluate the dynamic performance of the on-off control in temperature management. The experimental prototype is composed of the thermal plant, the temperature sensor and the control that is carried out in the PLC FX3U24MR by Mitsubishi Electric, where it receives the analog temperature signal, compares it with the set-point defined in the Ladder logic and activates the actuators. The supervisory was done on VTScada by Trihedral, on the screen it is possible to turn on the system, define the set-point temperature, view the lamp status, as well as the temperature value on the slide and in the graph over time. The differential of the product is the low cost, the local supervision of the data and in the replicability of the prototype by other educational institutions. The on-off control works quickly and effectively to manage the temperature. The local monitoring system proved to be reliable and efficient in measurements, allowing supervision of process variables in real time by the SCADA application, with a low latency rate of 4 seconds, suitable in comparison with the process dynamics which is in minutes.