Elevators are classified by control
The handle switch is used to operate the elevator, and the driver controls the handle on the control panel inside the car to manage the elevator's movement, including starting, rising, descending, leveling, and stopping. This system offers a direct and manual way of controlling the elevator's operation.
Button-controlled elevators are a type of simple automatic system that includes an automatic leveling function. These elevators typically have two modes: one where the buttons inside the car are used for control, and another where the buttons are used both inside and outside the elevator. This allows users to call the elevator and select their desired floor easily.
Signal-controlled elevators represent a more advanced form of automation. They are driver-operated but offer a higher level of automatic control. In addition to automatic leveling and door opening, they also support functions such as registering car commands, landing calls, automatic stops, forward stops, and automatic direction changes. This makes them more efficient in managing traffic flow within a building.
Collective control elevators are fully automated systems developed based on signal control. The main difference is that they can operate without a driver, making them ideal for high-traffic buildings where continuous service is required. These systems use advanced logic to manage elevator operations efficiently.
Parallel-controlled elevators involve connecting the control systems of 2 to 3 elevators together using parallel logic. This allows shared call buttons outside the elevator shafts, and each elevator has its own collection and scheduling function. This setup improves efficiency by reducing waiting times and optimizing elevator usage.
Group-controlled elevators use microcomputers to manage and coordinate multiple elevators that are either centralized or operating in parallel. These systems can be programmed or use intelligent ladder group control, allowing for optimized dispatching and improved passenger experience. This technology is commonly found in large commercial buildings with high elevator demand.
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