Control System of the Continuous Extrusion Line Using PLC and Conventional Regulators

Igor Kocić; Nikola Danković; Saša Nikolić; Darko Mitić; Petar Đekić

doi:10.7251/IJEEC2301009K

Igor Kocić Department of Control Systems, Faculty of Electronic Engineering, University of Niš
Nikola Danković Department of Control Systems, Faculty of Electronic Engineering, University of Niš
Saša Nikolić Department of Control Systems, Faculty of Electronic Engineering, University of Niš
Darko Mitić Department of Control Systems, Faculty of Electronic Engineering, University of Niš
Petar Đekić The Academy of Applied Technical and Preschool Studies-Niš

DOI: https://doi.org/10.7251/IJEEC2301009K

Keywords: multi-motor line; speed; tensile force; S7 1500 PLC controller; Sinamics DCM convertor; Sinamics G120 frequency converter; cascade regulation; PID 2 DOF

Abstract

This paper presents the functional characteristics of the line parameters based on the developed control software for speed, tension, regulation of traverse device for proper arrangement of the material on drum and temperature regulation. Speed and tension regulation is performed using the PLC controller S7 1500 series and conventional converters and inverters of the Sinamics DCM and G120 series. A control method was used where one device is the leader and all the others follow its speed with a given ratio and tensile control. Setting the parameters of conventional converters and inverters for controlling multi-motor drives was realized using the StartDrive tool. The temperature control of the extruder zones was done taking into account the mutual influence of the zones. Control and monitoring is implemented with software written in TIA Portal V15.1. software package.