Looking for a solenoid valve connection diagram and explanation.
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Looking for a solenoid valve connection diagram and explanation.
It is not fully visible. Under normal circumstances, the battery valves are connected in parallel for electrical ventilation, and the positioner controls the flow amplifier to adjust the opening. The output and position retention of the solenoid valve cannot be seen.
Series connection, one goes to DCS, one goes to SIS, SIS interlocking priority and DCS
Please tell me, if connected in series, how to realize the so-called SIS priority?
Send out the air circuit diagram and learn from it* study * .
DCS is a dynamic system that continuously monitors, calculates and controls process control, and dynamically controls the production process to ensure product quality and quantity.； SIS is a static system, used to monitor the operating status of production equipment, quickly handle abnormal working conditions, minimize the possibility of failure, and ensure that equipment and personnel are in a safe state. The starting point and focus of both are different.
All of this is clear. I would like to ask how the word "priority" of SIS can be reflected in the implementation process.
Safety comes before quality, that's the truth. I would like to ask how "priority" can be reflected in the specific implementation. For example, when the action condition is reached, how to make sis send the signal before dcs.