Operation Device for an Elevator System

摘要

The present invention is directed to an operation device for an elevator system comprising terminals connectable to a 3-phase AC power source providing a respective AC power supply voltage and a drive device connected to the terminals for driving a motor of the elevator system. A transformer is connected to at least two of the terminals and provides at least one supply voltage to the remainder of the elevator system. In an emergency operation of the elevator system, an auxiliary power supply having an output providing an auxiliary output voltage is connected to the transformer for generating an auxiliary supply voltage provided to the drive device via the transformer. The operation device according to the invention can be integrated into an existing operation device design and requires only slight modifications.