What type of signal is commonly required for pneumatics in automated systems?

In automated systems utilizing pneumatics, the common requirement is for electrical signals to control the operation of valves, actuators, and other components within the pneumatic system. Electrical signals are essential because they provide precise control and automation capabilities, allowing for the operation of solenoid valves that regulate the flow of compressed air. This automation enables the system to perform complex tasks, improve efficiency, and react quickly to varying input conditions.

While pneumatic signals relate to the actual movement of air within the system, they are not the controlling signals; instead, they are the result of signals executed by electrical means. Hydraulic signals pertain to fluid under pressure in hydraulic systems, which are distinct and not applicable to pneumatic systems. Lastly, thermal signals relate to temperature changes and do not directly control pneumatic components. Therefore, electrical signals are integral in enabling effective and responsive control of pneumatic functions in automation environments.