System Controller Ac Rack

A control system is a device, or set of devices, that manages, commands, directs or regulates the behavior of other device(s) or system(s). Industrial control systems are used in industrial production.

There are two common classes of control systems, with many variations and combinations: ,logic or sequential controls and or controls. There is also fuzzy logic, which attempts to combine some of the design simplicity of logic with the utility of linear control. Some devices or systems are inherently not controllable.

The term "control system" may be applied to the essentially manual controls that allow an operator, for example, to close and open a press perhaps including logic so that it cannot be moved unless safety gaurds are in place.

An automatic sequential control system may trigger a series of mechanical actuators in the correct sequence to perform a task. For example various electric and pneumatic transducers may fold and glue a cardboard box, fill it with product and then seal it in an automatic packaging machine. Programmerable logic controllers are used in many cases such as this, but several alternative technologies exist.

In the case of linear feedback systems, a control loop, including sensors control algorithms and actuators, is arranged in such a fashion as to try to regulate a variable at asetpoint or reference valve. An example of this may increase the fuel supply to a furnace when a measured temperature drops.