Patent ID: 8763760
Filing Date: 2014-07-01
Classification: B66B,H02P

Abstract:
1. Adjustment device in connection with an electric drive of an elevator, which electric drive of an elevator comprises an electric motor; and which electric drive of an elevator comprises a power supply apparatus of an electric motor for adjusting the supply voltage of an electric motor; and which adjustment device comprises means for controlling a power supply apparatus of an electric motor; and which adjustment device comprises a speed regulator for adjusting the speed of the electric motor; wherein the adjustment device is arranged to determine the output voltage of the power supply apparatus of the electric motor in relation to the permitted maximum value of the output voltage, and in that the adjustment device is arranged to interrupt the operation of the speed regulator but to continue the operation of the power supply apparatus of the electric motor when the output voltage of the power supply apparatus of the electric motor reaches the permitted maximum value.