The present invention lowers the (2) cage and wound around the hoist (9) a plurality of installed corresponding to launch and engaged with the (2) cage (13) the main ropes and thereby separated from each other A control device for an elevator which is to be driven, to the detection value output of the hoisting machine (9) for detecting the tension the main rope in a quiescent state before activating basket (2) and (13), the corresponding and is obtained so as to lift drive (2) and cage by increasing or decreasing individually based. Therefore, the tension of (13) even if each different main ropes in stacked cages (2) load is biased, the hoist (9) Since the driving (2) car at the output of the fair share, and cage there is no possibility that (2) is inclined.
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