Patent ID: 8729836

Claim:
A control device for a hoist comprising: a time setting unit for setting the time from startup of a double winding induction motor performing lifting or lowering by a first speed or a second speed lower than said first speed to disengage a brake which brakes said double winding induction motor, and setting the time from start of engagement of said brake to stopping of said double winding induction motor, in accordance with the time from the startup of said double winding induction motor to a generation of a torque; and a time changing unit for detecting a power-supply frequency of a power supply supplying power to said hoist and capable of changing at least one of the time from the startup of said double winding induction motor to the disengagement of said brake and the time from the start of engagement of said brake to the stopping of said double winding induction motor, in accordance with the power-supply frequency of said power supply.