The microprocessor-based control unit that manages all elevator functions including motor speed, door operation, call registration, safety monitoring, and diagnostics.
Full Definition
The controller is the brain of the elevator system. Modern controllers use microprocessors or PLCs running proprietary firmware to manage the dispatch algorithm, motor speed curve profile, door timing, floor levelling, safety circuit monitoring, and fault logging. Communication between the controller and car-top devices uses the travelling cable; communication to landing fixtures typically uses a serial bus or CAN bus to reduce wiring complexity. Controllers provide a diagnostic port or display for engineers, showing real-time fault codes that map to EN 81-20 safety functions. Group controllers coordinate multiple elevators sharing the same bank.
