Logical diagram design in construction drawing design
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In construction drawing design, should the design of the logic diagrams be carried out by a single specialty – such as the instrumentation specialty – first, followed by the process engineering specialty, or should process engineering, electrical engineering, and instrumentation work together? Which one plays the leading role?
The interlock logic is defined by the process engineering team, while the instrumentation team is responsible for its implementation. During this time, the process engineering team will also provide interlock conditions to the electrical department; regarding the interlock logic, the instrumentation and electrical teams do not have the means to communicate with each other.
Well, let’s discuss issues related to the output contacts. What I mainly want to say is that instruments should not overstep their bounds by providing electrical interlock conditions on behalf of the process control system.
The instruments and electrical appliances are located together, further back! Let’s start with machinery first
Studying*.....
How do everyone draw interlock logic diagrams? I’ve seen some diagrams that use logical blocks to represent the logic, some that describe the interlock logic through conditional statements, and others that provide a textual explanation directly in the description.
I really ran into you at Haichuan, hehe~ It involves process optimization, control descriptions, converting instruments into logic diagrams; there’s also a part related to electrical systems. Here we usually handle it in two ways: one is the main interlock diagram, and the other is the single-loop diagram
Generally, it involves setting up the interlocking conditions for the process, with the instruments being used to implement these functions
The professional division of labor specified in the design mentions the interlocking conditions between instrumentation and electrical systems, but there is no standard table of such conditions