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You are here: Home / BUSINESS / PLC: A Reliable Tool for Industries

PLC: A Reliable Tool for Industries

21 August 2022 by Ushashree Acharjee

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A programmable logic controller (PLC) is a small computer that has inputs for data and outputs for sending and receiving commands. A PLC’s primary duty is to regulate a system’s operations using the underlying logic that has been programmed into it. PLCs are used by businesses all over the world to automate their most crucial procedures.

A PLC receives inputs from both automated data collection points and human input points like buttons and switches. The PLC then chooses whether to modify the output based on its programming. The outputs of a PLC can manage a wide range of machinery, including motors, solenoid valves, lighting, switchgear, safety shut-offs, and many more.

PLC locations might differ greatly from one system to the next. PLCs are normally shielded by a surface mount electrical box, and they are typically situated close to the systems they control. Older industrial facilities frequently used manual relay-based control systems, which were mostly superseded by PLCs.

Photo by Josh Sorenson: https://www.pexels.com/photo/black-flat-screen-computer-monitor-1714208/

Benefits of Using PLC

For many years, PLCs have been a required component in the design of industrial machinery. Why are PLCs such a popular choice? What benefits do they provide? Following are the reasons:

  • Programming PLCs is a rather simple process. PLCs are excellent for firms that wish to reduce complexity and expenses because of their programming languages, which are straightforward when compared to those of other industrial control systems.
  • PLCs are an established technology that has undergone extensive testing and study over time. Strong studies on a variety of PLC types are readily available, as are in-depth guides for programming and integrating them.
  • PLCs come in a wide range of price ranges, including many very basic types that are quite cheap and are frequently used by small firms and start-ups
  • .

  • PLCs are incredibly adaptable, and most PLC versions may be used to handle a range of different systems and processes.
  • PLCs lack any moving parts because they are entirely solid-state electronics. Because of this, they are much more dependable and resilient to the harsh environments found in many industrial buildings.
  • Because they have fewer parts, PLCs are simpler to debug and require less downtime for maintenance.
  • PLCs are effective and don’t use a lot of electricity. This promotes energy efficiency and could make wiring decisions simpler.

The Functionality of a Programmable Logic Controller

Input Monitoring: The PLC tracks pertinent data inputs and transmits the information to the CPU. PLCs with analogue capability can accept analogue inputs for continuous variables, but some PLCs only accept data inputs with discrete (on/off) inputs. IoT devices, robots, safety sensors, human-machine interfaces, and virtually any other form of data entry point are just a few examples of the sources of input.

Logic Programming: Every PLC has a microprocessor CPU, which can be 16-bit or 32-bit in size. The PLC CPU is configured by engineers and technicians to recognize specific values and conditions and to alter outputs by its preprogramed rules. The CPU continually monitors the status of variables and takes actions in response to preset criteria. This basic idea enables a huge range of designs and operations.

Output Control: The PLC manages several switches, motor starters, relays, and other devices attached to its outputs based on the programmed logic. This enables the PLCs to take over mechanical activities like machine operation. By instructing PLCs to transfer their output signal to a subsequent PLC in a chain, engineers can also connect other system components.

Why Is It Significant to Choose a Good Quality PLC?

When it comes to choosing a significant electrical item like PLC, you must prioritize the quality. Some of the key factors to consider are its electrical capacity, processing speed, compatibility, temperature tolerance, memory, connectivity, and analogue I/O.

Do your research carefully before choosing a supplier. Get in touch with them through the email id or phone number available on their website.

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