Automatic Forward and Reverse Motion of Overhead Crane Driven by a Motor

Notice that when contact (1-2) of limit switch X opens to de-energized contactor F, its contact (1-3) will almost simultaneously closed to energized the contactor R. This will bring about the automatic reversal of the overhead crane from the left to the right. 

On the other hand where contact (1-2) of limit switch Y opens to de-energized contactor R, its contact (1-3) will almost simultaneously closed to energize the contactor F. This will bring about the automatic reversal of the overhead crane from the left to the right.

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