Details:
Summary:
The General Electric Company is actively interested in the problems of the Lithographic Industry. Recently a study was undertaken to determine what improvements could be made to the basic drive system of offset presses. The results of this study indicate that the type ACA motor and control is a natural application for driving these presses and offers several advantages over other type drives. During this study the functional control requirements were carefully analyzed. Additional information concerning ease of adjustment and the need for better speed regulation was determined by talking with press operators and press manufacturers. Fast acceleration to a preset speed and quick return to a consistent slow-down speed, are important considerations in a high production shop. Some operators have expressed a desire for a fine degree of speed adjustment over more than a 2:1 speed range.