What industrial sectors will PLC be applied to?

Light industry, heavy industry, national defense, military industry, aerospace are all useful.

1 All 1Application: In today's industry, as long as the place involved in control, it is inseparable from the brain of PLC, in short, it can be roughly divided into two fields:

The first is the field of automation of all equipment based on stand-alone control, such as: packaging machinery, printing machinery, textile machinery, injection molding machinery, automatic welding equipment, tunnel shield equipment, water treatment equipment, cutting, multi-axis grinder, rolling and continuous casting machinery in the metallurgical industry. There are too many, all the actions and processing of these equipment need to be guided and completed by the program set in the PLC according to the process, just like the human brain;

The second is the process automation industry based on process control, such as sewage treatment, tap water treatment, building control, thermal power main control, auxiliary control, hydropower main control, auxiliary control, metallurgical industry, solar energy, cement, petroleum, petrochemical, railway transportation. There are too many. The continuous production and operation of all equipment in these industries, there are always many monitoring points and a large number of real-time parameters, and to monitor, control, and collect these process parameters and related process equipment, we must also rely on the brain of PLC to complete, of course, the traditional name also has DCS, although the concept of design is not the same, but now the technical route has been gradually integrated.

2.In this way, it may be more intuitive: wherever industrial control is involved, PLC will be used to control it!

It involves all aspects of our lives, including any goods we buy from the supermarket, the digital products we use, the cars we drive, the books we read, etc., from production, packaging, transmission, warehousing, transportation, etc., all need to be completed with PLC-controlled automation equipment, this example is clear enough, right?

PLC is widely used in industrial control, as long as it is a little more complex industrial control will be used.

It is generally used in the automation industry of industrial sites.

The main application industries of PLC are textile machinery, textile machinery industry, lifting machinery industry, and electricity.

Elevator industry, metallurgical industry, power industry, petroleum and petrochemical industry, municipal industry, chemical industry, building and construction industry, building materials industry, machine tool industry, plastic machinery, rubber machinery, electronic special equipment, automobile industry, etc.

The textile and metallurgical industries are the two industries with the most PLC applications. The metallurgical industry has a large scale and high requirements for automation, and the demand for PLCs in different IO segments, especially large and medium-sized PLCs, greatly exceeds the applications of other industries.

In the manufacturing industry, there are a large number of open-loop sequential control based on switching quantities, which carry out sequential action numbers according to logical conditions, and the number of actions is in accordance with the timing sequence; In addition, there is the control of chain protection actions according to the logical relationship that is not related to the sequence and timing; As well as a large number of switching, pulse, timing, counter, analog over-limit alarm and other state quantity-discrete data acquisition and monitoring. As a result of these control and monitoring requirements, PLCs have developed into products that mainly replace relay lines and perform sequence control. PLC manufacturers have gradually added various communication interfaces to the original CPU template, and fieldbus technology and Ethernet technology have also developed simultaneously, making the application range of PLC more and more extensive.

PLC has the advantages of stable and reliable, cheap, complete functions, flexible and convenient application, and convenient operation and maintenance, which is the fundamental reason why it can occupy the market for a long time.

The hardware of the PLC controller itself adopts a building block structure, with a motherboard, a digital IO template, an analog IO template, a special positioning template, a barcode recognition template and other modules, and the user can use the method of expanding on the motherboard or using the bus technology to equip a remote IO slave to get the desired IO quantity according to the need.

PLC not only realizes a variety of IO control, but also has the ability to output analog voltage and digital pulses, so that it can control a variety of servo motors, stepper motors, frequency conversion motors, etc. that can receive these signals, plus touch screen man-machine interface support, Schneider's PLC can meet your needs at any level in process control.