How to understand “is clear” (gourd limit switch)?
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The wire rope hoist is standardly equipped with an emergency hoist limit switch for disconnection in the top and bottom hook positions. If the original manufacturer’s control/circuit diagrams are used, the corresponding lifting direction as well as any cross and long travel functions will be disabled once the limit switch is activated. The opposite lifting direction will then be available. Last edited by echommm on 2009-4-15 15:03.]
Trial translation: The opposite lifting direction is clear. There are no restrictions on the reverse lifting path. If we compare opposing with corresponding, the corresponding hoisting direction applies under certain conditions, whereas the opposing hoisting direction is applicable without any conditions. Clear: In Jinnishuiba, as one of the definitions of adj.: (9) Free from qualification or limitation; absolute: Absolute: without any restrictions or boundaries ； Absolute:
Clear means unrestricted. This sentence can be understood as: the reverse lifting path is not controlled by the limit switch, or in other words, the limit switch has no effect on the reverse lifting path.
Sorry, there are too many typos above... This sentence can be translated as: The reverse lifting path is not controlled by the limit switch, or in other words, the limit switch has no effect on the reverse lifting path.
The final decision is: reverse lifting is not restricted.
Is hoisting just the two directions of up and down? What does “corresponding” refer to as being corresponding to? I don’t understand this; I’m also not clear about what the opposing direction is. My preliminary understanding of L is that the function of the limit switch is to disconnect when in the top and bottom hook positions – once it’s activated, no corresponding action takes place (what?) ) It changes direction and moves, but not in the opposite direction (it will not deactivate). I’m still a bit confused. If we consider the top and bottom positions separately, could someone explain how it works? :handshake
My rough understanding is that if one is in the top hook position at this point, it’s no longer possible to lift further; any further upward movement will activate the limit switch and stop the process. Since the hoisting direction set by the controller at this stage is upward, the opposite direction is downward, and it is then possible to lower the load. The same is true in reverse.