An elevator control mode that registers all hall calls without directional discrimination and serves them in the most efficient sequence in a single continuous sweep, typically used for low-traffic residential buildings and service lifts.
Full Definition
Full collective control (FCC) — also called collective-selective in some markets — is a simplified control logic used primarily for residential elevators, smaller office buildings, and service lifts. Unlike selective collective control, FCC does not distinguish between up and down hall calls: the controller registers all landing calls and car calls simultaneously and serves them in the most efficient sequence as the car traverses its travel. Primary advantage: simplicity — a single call button per floor rather than separate up and down buttons, lower cost, and straightforward microprocessor implementation. Disadvantages: inefficiency in multi-floor buildings with simultaneous up and down demand, as the car cannot segregate directional call streams. Appropriate for: (1) Residential buildings where journeys are infrequent and demand is low; (2) Service lifts and goods elevators with few users; (3) Small commercial buildings with 3–6 floors. In practice, FCC is sometimes conflated with single automatic operation (SAO), where the car accepts only one call at a time and locks out further calls until the journey is complete — but these are technically distinct: SAO is for one user at a time, while FCC accepts multiple calls and serves them collectively. Modern residential elevator microcontrollers implement FCC with optional automatic standby floor parking at the ground or main floor.
