Introduction and why PLC


Control engineering has evolved over time. In the past humans were the main method for controlling a system. More recently electricity has been used for control and early electrical control was based on relays. These relays allow power to be switched on and off without a mechanical switch. It is common to use relays to make simple logical control decisions. The development of low cost computer has brought the most recent revolution, the Programmable Logic Controller (PLC). The advent of the PLC began in the 1970s, and has become the most common choice for manufacturing controls.

Why PLC
PLCs have been gaining popularity on the factory floor and will probably remain predominant for some time to come. Most of this is because of the advantages they offer.

• Cost effective for controlling complex systems.
• Flexible and can be reapplied to control other systems quickly and easily.
• Computational abilities allow more sophisticated control.
• Trouble shooting aids make programming easier and reduce downtime.
• Reliable components make these likely to operate for years before failure.

Share on Google Plus

About shaikat

This is a short description in the author block about the author. You edit it by entering text in the "Biographical Info" field in the user admin panel.
    Blogger Comment
    Facebook Comment

0 comments:

Post a Comment

Related Posts Plugin for WordPress, Blogger...

Featured Post

PID CONTROLLER 3-WAY TEMPERATURE CONTROL VALVE

A proportional-integral-derivative controller ( PID controller ) is a control loop feedback mechanism used in power and industrial con...

RECENT POSTS

Recent Posts Widget