| 摘要 |
<p>Provided is a rescue operation device of an elevator, which is provided with a brake switch (22) for connecting and releasing a DC power supply (20) to and from a brake coil (24L), an exciting circuit (50) for generating a torque by connecting the DC power supply (20) to a three-phase winding of a motor (11) and causing current to flow into the motor (11), and a rescue switch (32) for connecting and releasing the exciting circuit (50) to and from the DC power supply (20). The exciting circuit (50) is provided with a first excitation pattern in which one pole of the DC power supply (20) is connected to one phase of the three-phase winding, and the other pole of the DC power supply (20) is connected to the other two phases of the three-phase winding, a second excitation pattern in which the phase formed by the three-phase winding of the motor (11) is set forward by an electrical angle of 90 degrees in a direction in which a car (17) is intended to be moved, and an off pattern in which windings of two phases are set apart from the DC power supply (20).</p> |
