... electrical cut-off switch 电力截断掣 cut-off limit switch 停闸限位掣 horn cut-off switch 音响警告器电门 ...
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Pressure limit switch circuit is cut off, stop, and then closing, the hook can only decrease.
压下限位开关，切断电路停车，再合闸时，吊钩只能下降。
When the arm runs to the upper and lower two limit position, respectively press the lower limit switch, cut off the main control circuit, variable amplitude motor parking, to limit the role.
当臂杆运行到上下两个极限位置时，分别压下限位开关，切断主控电路，变幅电机停车，达到限位的作用。
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