NEW HIERARCHICAL, FUNCTION-RELATED INSTRU MENTATION AND CONTROL PLANNING AND DOCUMENTATION METHOD

Objective. In consequence of the increasing complexity of automated in dustrial plants and facilities and the extensive use of software in in strumentation and control systems the authors developed a hierarchical , function-orientated planning and documentation method for instrument ation and control. It has already been used successfully in the area o f energy engineering. The documentation method can be applied to instr umentation and control engineering for industrial plants and facilitie s and is illustrated by an example taken from the domain of rolling mi ll systems. Summary. The advantages of the hierarchical function-orien tated I&C documentation and planning method can be outlined as follows : Its uniform function-orientated approach makes it possible to manage the increasing complexity of I&C concepts. Plant section diagrams a w ell as function and area overview diagrams can be used as uniform plan ning documentation to clarify tasks and responsibilities between plant supplier, electrical and I&C supplier and plant operator, making it p ossible to minimise misunderstandings and faulty planning. The method offers the key to CAE-aided function-orientated instrumentation and co ntrol planning; it permits, on the one hand, universal as well as cont rol-system-independent project planning and, on the other hand, functi on testing for validation and verification purposes. Hierarchically st ructured control system function diagrams allow swift fault diagnosis. This applies both to the commissioning and to the subsequent long-ter m operation of plant and equipment.