Application for controlling a thickness regulating member used in paper manufacturing

This paper presents an application that is designed to control the process of paper manufacturing in order to obtain a constant thickness for the resulting paper. The application teaches a system to control a thickness regulating member used in the manufacture of sheet products. The position of the slice lip is controlled by a number of actuators positioned along the slice lip and connected to it and to the head box. The system is composed of a Siemens S7–300 PLC connected to a Daytronic equipment. Also a TP270 operating panel is connected in order to allow users to view the state of the entire system and also set the position of the actuators.