Applying industrial controllers for safe operation

THE DESIGNER of controllers and control equipments has three major design objectives. In satisfying these objectives, he discharges his obligations to various sectors of his professional responsibility. These objectives are 1. To design for quality of performance. This objective satisfies the obligation to the customer who expects to receive fair value for the price he pays. 2. To design for economy of manufacture. This objective satisfies the obligation to the manufacturer who must sell at a profit to stay in business. 3. To design for safe operation. This objective satisfies the obligation to the pubhc since it safeguards operators, as well as the owner and the neighbors of the plant, against lethal accidents and fire hazards.