May I ask that the process should provide logic relationship conditions and interlock conditions to the automatic control system; what standards should be followed when drawing this logic diagram?
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May I ask that the process should provide logic relationship conditions and interlock conditions to the automatic control system; what standards should be followed when drawing this logic diagram? How to propose interlock conditions? And how should the control requirements be stated? Thank you!
Whether it’s a cause-and-effect table, a tree diagram, or a written explanation, it’s fine
Process parameters determine the operation of components, and the operation of components realizes the process parameters. It is recommended to establish an input-output logic diagram, with the logical relationships between components reflected through changes in process parameters.
There’s no standard for this; as long as the logical relationship is clearly expressed, that’s enough. The set values for interlock conditions and the like are all clearly stated in the logic diagram.
The interlock logic matrix created in Excel is quite intuitive, as it clearly shows the process conditions and the status of the valves that are operated. Other forms have also been seen; it depends on the regulations of each design institute.
The interlock logic matrix created in Excel is quite intuitive, as it clearly shows the process conditions and the status of the valves that are operated. Other forms have also been seen; it depends on the regulations of each design institute.
May I ask how the expert creates input-output logic diagrams? Is there a sample?
What do cause-and-effect tables and tree diagrams look like? Thank you!
Does the expert have any reference materials on Excel-based logic matrices for Lianchu? Looking forward to your advice
The file is encrypted, so it can’t be sent; I’m really sorry about that. The overall structure consists of columns representing various instrument tags and high/low alarm values, while the rows correspond to various control valves or shut-off valves, or the start/stop signals for mechanical equipment. The rows are located at the top, the columns on the far left, and in between are the various actions, such as FC, FO, PC, PO, FMC, FMO, etc. Foreigners tend to prefer using this; it’s very intuitive.
The file is encrypted, so it can’t be sent; I’m really sorry about that. The overall structure consists of columns representing various instrument tags and high/low alarm values, while the rows correspond to various control valves or shut-off valves, or the start/stop signals for mechanical equipment. The rows are located at the top, the columns on the far left, and in between are the various actions, such as FC, FO, PC, PO, FMC, FMO, etc. Foreigners tend to prefer using this; it’s very intuitive.