Programmable logic controllers provide automatic control of processes so that very little human intervention is required. Yet, this results in a well-coordinated, repetitive process.

These systems automatically start and shut down critical equipment in large and complex manufacturing processes. When in operation, programmable logic controllers ensure that all conditions are met before starting up a certain machine or process. In addition, the PLC continues monitoring the entire system using a variety of sensors.

Consequently, this ensures that everything runs as programmed. The PLC will trip if it detects a malfunction or abnormality in any of the monitored parameters.

The operating environment, size of the processes, ease of access by operators and maintenance personnel influence the choice of PLC.

A harsh environment with dust or small particles will require a PLC system with an appropriately IP rated enclosure. This prevents ingress of foreign particles into the system. The available space and layout also influence the choice. Therefore, most users require easy access for reprogramming, maintenance, or troubleshooting.

The simplest form of a PLC, all the basic components of a PLC include the I/O points, CPU, and software program. It is typically housed in a single enclosure. These PLCs are attached directly to the equipment being controlled.

Modular PLCs consists of several components on a common bus within a base unit to allow extending of the input and output. These units work on an expandable base unit. Therefore, it provides all the basic components of a PLC, i.e., a power supply, I/O points, memory and the CPU, and slots for additional cards.  These modules, which may be from the same or different manufacturers, are plugged together into a base unit.

This follows the same modular concept, but each of the modules plugs into a rack. The add-on modules are contained in racks which are then linked together through a network of connections. Since the rack mounting PLC is highly scalable, it allows very large systems to be assembled.

In energy management, the PLC monitors and controls equipment such as boiler systems. It helps the organization increase energy efficiency and safety. PLCs are also used in numerous everyday activities. They are found in factories, homes, commercial buildings, airports, unmanned car parks, and more.

Finally, some practical applications include:

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Science fiction aficionados may appreciate today’s blog post on one of the fundamental ingredients needed to create an other-worldly retreat where you can … well, space-out. From childhood bedrooms to multi-million dollar estates, science fiction has been the motivation for some of the most amazing spaces ever. Call it your Star Wars Sanctuary, Asimov Alcove, or Halo Haven, sci-fi rooms all have similar characteristics that give it their “universal” appeal. LIGHT.

One of the most popular settings for a fictional future is in outer-space. A black landscape, interrupted only by the flickering of shining planets & stars is the perfect backdrop for sci-fi design. LED fiber optic ceiling lights will make you look like you’re in space.

Patience and attention to detail will go a long way when installing these kits. You’ll find detailed instructions Make a home-made star constellation projector with star printables and a flashlight to mark real constellations!

Did you know that today is National Science Fiction Day, as well as Isaac Asimov’s birthday?