What drawings are required for PLC or DCS installation?
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Dear teachers, hello. I currently have a chemical engineering project that requires automated control systems. The drawings available are not complete – there are process flow diagrams and PFDs. Can these be used as the basis for designing an automated control system? Thank you! !
Topology diagrams and wiring diagrams of PLC/DCS； Chain relationship diagram ； Functional Specification Document
Topology diagrams and wiring diagrams of PLC/DCS； Chain relationship diagram ； Functional Specification Document
You don’t need these drawings; I’ll provide the technical details. Can you help me create it?
Complete PI&D diagram, important interlock logic table.
Could you provide a sample for me to see? Thank you
There are process flow diagrams as well as PFDs, which can be used as drawings for the construction of fully automated control systems
In chemical engineering projects, automation (instrumentation) is a specialized field, just like electrical engineering or architectural engineering in such projects; it certainly cannot be handled with just a few drawings. From the perspective of automation control, it generally includes design conditions (process, architecture, electrical systems, equipment, etc.) ； Automatic control equipment category: Instrument data sheets, DCS (or PLC) specification documents, DCS (or PLC) configuration diagrams ； System connection diagrams: circuit diagrams, grounding system diagrams, cable routing diagrams, and so on. Check the standards and specifications; they represent only the minimum level of detail.
You can add me as a friend to discuss this in detail; there’s too much to cover
These are merely the basis and foundation for designing the instrument specifications. It is recommended to consider implementing interlocks in the DCS/PLC; reviewing the interlock circuits and control schemes is important for DCS/PLC programming.
Based on the process flow diagram, operation instructions, selection parameters, and emergency response guidelines, automatic control can be achieved; however, the selection parameters need to be specified in detail so that the appropriate instruments can be chosen, thereby enabling automatic control of the entire production line.