The meaning of \"override\" in different contexts
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In the translation of recent documents, I encountered this term in different contexts: “override” is used in relation to valves, for example: There must be a manual override on each valve that allows the operator to place the valve in any position, including fully closed. It must not be possible to remove a manual override if the valve is operating below its normal output limit. It is also used in programs (or sequence control), such as: If that is not the case, increase the catalyst concentration and/or increase the level inside the catalyst slurry tank by overriding the normal operation of the sequence SEQ-3050A. Additionally, it is used in interlocks, as in: Interlock overrides should not be necessary during the normal operation of the plant, and they must be strictly controlled and used as little as possible. I would like to ask what specific meanings “override” has in these different contexts?
I think \"override\" here means giving priority to operations and control.
Simply put, it is commonly used in the chemical industry: override
Those who work in control systems might have more insight on this issue. I feel that “override” is a more professional term, but it’s not very easy to understand; most operators prefer to use the term “bypass” in many situations. Of course, for the first two scenarios mentioned by the original poster, which are more like switching from one state to another or from the main program to a subroutine, the term \"bypass\" might be more appropriate.
A literal translation is “over-control switch,” but I think a more accurate explanation would be “shielding.” It means temporarily disabling a certain function and switching to another mode of operation.
Looking up in a dictionary means overriding and taking control. It’s some jargon specific to the instrumentation field, I don’t quite understand it; could a professional please explain it?
The translation and explanation upstairs are very accurate.