What is an important feature of a controller in automatic mode?

A key feature of a controller in automatic mode is its ability to operate based on set points with minimal need for operator intervention. This means that once the desired set points for the process variables are established, the controller continuously monitors those variables and makes necessary adjustments automatically to maintain the set conditions.

This automatic operation enhances efficiency and stability in processes, as it minimizes human error and reaction times. Operators can focus on monitoring the system and intervene only when necessary, such as if a fault occurs or if adjustments to the set points are needed due to changing operational conditions. In contrast, constant operator input and remote-only functions emphasize manual oversight, which contradicts the fundamental benefit of automation. Additionally, handling only emergency scenarios does not capture the routine and continuous operational capabilities of an automatic controller.