interlocking
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What is a three-to-two interlock? What does \"three\" refer to, what does \"two\" refer to, and what is an interlock...
For three pressure, level, or vibration measurement points, if an abnormality occurs in one of them, the system does not shut down but only issues an alarm; it will shut down only if an abnormality is detected for two days in a row. Alternatively, a majority vote of two out of five can also be used
In a chain, when something goes wrong, an instruction or an action is given
Third is the three detection points; second, when two of these three detection points reach the threshold value, a chain reaction is triggered
There are three reasons for the action; if any two of these reasons occur, the chain reaction will be triggered
Interlock is an automatic protection system for the equipment; when operations exceed the set limits, the instrumentation system will automatically take corresponding protective actions, such as shutting down the material feed or stopping the machine. Interlocks have specific installation requirements; generally, interlocks are required for devices and facilities that involve major hazard sources.
The interlock instrument has three detectors, any two of which can detect the interlock conditions and enable interlocking
At three detection points, if any two of them reach the linkage value, a linkage action is triggered. Generally, those that are important or highly dangerous are used
In simple terms, it involves a parameter for which there are three measuring instruments. To prevent any one of these instruments from exceeding the interlock value for various reasons and thus causing an incorrect interlock action, it is necessary that any two of the three instruments meet the interlock value simultaneously in order to trigger the interlock; this two-out-of-three mechanism is used to ensure safety and avoid incorrect actions.
With three causes (measurement points), if two of them experience abnormalities (exceeding the set values) at the same time, it will trigger one effect (action)
Interlocking is an automatic protection mechanism; once the interlocking conditions are met, the system automatically adjusts to a safe state； To avoid false operations, interlocks are generally designed using a three-out-of-two or similar principle; that is, for the same instrument there are three measurement points, and the interlock is activated when two or more of these points are below or above the set value