Which device provides power to the door operator?

The door operator controller is essential because it serves as the main control unit for the elevator door operation. It not only manages the door's opening and closing movements but also regulates when and how the power is supplied to the door operator. This controller is designed to receive input from various sensors and user interfaces, ensuring that the door operates smoothly and safely. It coordinates actions based on both user commands and safety protocols, making it a vital component in the overall functionality of the elevator door system.

While a power supply unit provides the necessary electrical energy for the entire system, including the controller and the drive motor, it does not directly control the door operation itself. The drive motor, while it converts electrical energy into mechanical power to move the doors, relies on the controller to initiate its operation. The backup battery serves as an emergency power source to ensure the door can still function in the event of a power failure, but again, it is the door operator controller that directly manages the operations of the door.