What determines the direction of elevator movement?

The direction of elevator movement is primarily determined by the selection made by the user or the control system, which is often referred to as direction selection. When a user presses the up or down button on an elevator panel, this input communicates a specific command to the elevator's control system. The control system interprets this input and activates the motor to move the elevator car in the chosen direction, either upwards or downwards.

While power supply and control signals play important roles in enabling the elevator's operation, they do not dictate the direction of movement themselves. Safety interlocks ensure that the elevator operates within safety parameters, but they also do not determine direction. Instead, they contribute to the overall safety and reliability of the elevator system. Thus, direction selection is the key factor in how an elevator is directed to move based on user input or pre-programmed commands.