Comparison of PID Control Performances of Different PLC Series in a Hydraulic Proportional Valve System-An Experimental Setup

The significance of both cost and production speed has gained importance within the industrial sector. During the installation of industrial facilities, selection of materials with ideal properties is crucial for achieving the required system performance. Especially, when working with moving equipment, the speed required by the system as well as the costs of the necessary equipment are taken into account. This study compares the operational performances of S7-300, S7-400, S7-1200 and S7-1500 series PLCs with four different CPUs for the hydraulic proportional valve control system in P, PI, PD and PID control modes in Kardemir Rail and Profile Rolling Mill. Performance comparisons were made based on settling time, rise time, delay time and positive and negative maximum overshoots. The results of the study were illustrated using graphs and tables and were further analyzed based on data thus obtained. Based on these analysis results, suggestions were made regarding the type of PLC that would be appropriate to be chosen for the system.