Patent ID: 6482296
Filing Date: 2002-11-19
Classification: D21G

Abstract:
A method for controlling a papermaking machine, board machine or tissue machine, which papermaking machine, board machine or tissue machine includes basic unit assembly groups (U1 . . . Un), such as a headbox, a wire section, a press, a drying section, a coat unit or a finishing machine, and wherein a machine control system of the papermaking machine, board machine or tissue machine includes a central processing unit (CPU), one or more process control units (PCS) connected to said central processing unit (CPU), and one or more input/output units (I/O), connected by control cables (L1 . . . Ln) to the controlled units or actuators (D1l . . . D1m; Dn1 . . . Dnm), comprising the steps of:locating said process control units (PCS) and/or input/output units (I/O) of the machine control system within a mechanical machine part in the basic unit assembly groups of the papermaking machine, board machine or tissue machine or such, and protecting said process control units (PCS) and/or said input/output units (I/O) against ambient conditions, such as temperature variations, vibration, moisture and impurities by protective encapsulation.