Abstract: A door control system with a door controller controls shift movements of at least one door leaf of an elevator door. The door controller is configured as a slave controller to implement master instructions from an elevator controller, acting as a master controller, by actuating a door drive. The door controller is also configured to autonomously reverse a previous door leaf movement, preferably by a specified distance, when a collision of the at least one door leaf with an obstacle is detected, by appropriately actuating the door drive. In this way, even in the event of a malfunction of the elevator controller or if an elevator installation is operated in a fire mode or maintenance mode, it can be ensured that no obstacles or people are trapped in the elevator door.

Abstract: A device for preventing excess speed, which is caused by an energy store, of a door leaf, includes a door leaf displaceable between an open position and a closed position, an energy store coupled with the door leaf, which energy store provides energy for the closing movement of the door leaf in the event of failure of the electrical energy supply, a door drive coupled with the door leaf, wherein electrical energy can be induced in the door drive when closing movement of the door leaf takes place, and a door control, which activates the door drive and which is suitable for regulation of the speed of movement of the door leaf, wherein the door control is operable by the induced electrical energy when the electrical energy supply fails, and a method of operating an elevator door.

Abstract: An elevator car for an elevator system includes a car door, a car door mechanism, at least one car door panel, a door drive motor, and a drive control device for the door drive motor. The car door mechanism thereby supports the car door panel. The drive control device includes an operator module having an operator panel, wherein the operator module is disposed on the elevator car so that the operator panel can be operated from the roof of the elevator car and through an opened shaft door from a building floor.

Abstract: A device for preventing excess speed, which is caused by an energy store, of a door leaf, includes a door leaf displaceable between an open position and a closed position, an energy store coupled with the door leaf, which energy store provides energy for the closing movement of the door leaf in the event of failure of the electrical energy supply, a door drive coupled with the door leaf, wherein electrical energy can be induced in the door drive when closing movement of the door leaf takes place, and a door control, which activates the door drive and which is suitable for regulation of the speed of movement of the door leaf, wherein the door control is operable by the induced electrical energy when the electrical energy supply fails, and a method of operating an elevator door.

Abstract: An elevator car for an elevator system includes a car door, a car door mechanism, at least one car door panel, a door drive motor, and a drive control device for the door drive motor. The car door mechanism thereby supports the car door panel. The drive control device includes an operator module having an operator panel, wherein the operator module is disposed on the elevator car so that the operator panel can be operated from the roof of the elevator car and through an opened shaft door from a building floor.