What is the functional purpose of the 'LSL' contacts for the hoist controller circuit shown in the illustration? EL-0102
Official USCG Answer & Rule Citation
Correct Answer: Option C — It is a limit switch which automatically stops the winch drum rotation in the lower direction before all the cable is payed out insuring that a few wraps remain on the drum
Lower safety limit switches (LSL) are critical deck machinery protective devices designed to mechanically interrupt power and stop drum rotation during paying out, ensuring a minimum number of wire rope wraps remain secured to the drum friction flange.
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