Control systems have helped to streamline and automate business and manufacturing processes for a long time, and they will continue to do so for many years to come. In essence, a control system manages, commands, directs or regulates the behaviour of other devices or systems within its control loops.
Control systems are not necessarily huge, complex systems of machinery. In fact, a single home heating controller linked to a thermostat which controls a domestic boiler is an example of a domestic control system you might have encountered.
There are two main types of control loops, namely, open loops and closed loops. Open loops operate with a degree of human input, whilst closed loops are fully autonomous. In some cases, a control system can be switched from open to closed and vice versa.
It is important to note that open systems are manually controlled, whilst closed systems are fully automated.
There are various elements that comprise control loops, which in turn become part of a control system. These parts include, but are not limited to, programmable logic controllers (PLCs), programmable automation controllers PACs), remote terminal units (RTUs), control servers, intelligent electronic devices (IEDs) and more.
Typically, a control loop is comprised of a sensor, a controller and a final control element. The sensor picks up the process variable, then the controller receives the signal from the sensor and send it onwards to instrumentation via remote terminal units, and on to the final control element where the process variable is adjusted and kept constant.
A number of industries benefit from the implementation of control systems. Control systems work to enhance production, efficiency and safety in many facets of the manufacturing process. Some industries include:
Fortunately, NJCSI offer a range of comprehensive automation and integration services, including all manner of control systems. You can contact us to discuss your requirements, goals and restrictions and we will devise a way to connect you with the business processes you require.