Door controller and door control system for controlling movements of at least one door leaf of an elevator door

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.

Dependencies are inferred from the claim text.