With its high reliability, flexibility and powerful control functions, PLC is widely used in many fields of industrial automation production:
Automobile manufacturing industry
Application scenarios: body welding, painting, assembly and other links on automobile production lines.
Specific case: In the body welding production line, PLC controls a large number of welding robots and welding equipment. Through programming, PLC can accurately control the robot’s motion trajectory, welding time, welding current and other parameters to ensure that the quality and position of each weld meet the design requirements. At the same time, PLC can also realize the sequential control of the production line, coordinate the work between various stations, and improve production efficiency. For example, when a car body enters a welding station, PLC will send a signal to start the corresponding welding robot for welding operation; after welding is completed, PLC will control the conveying equipment to transport the car body to the next station.
Application effect: Improved welding quality and production efficiency, reduced labor costs and scrap rate.
Food and beverage industry
Application scenario: production, packaging and filling process of food and beverages.
Specific case: In the beverage filling production line, PLC is responsible for controlling the operation of equipment such as filling machines, labeling machines, and capping machines. It can accurately control parameters such as filling volume, labeling position, and capping force according to production needs, and monitor various sensor signals on the production line, such as liquid level sensors, photoelectric sensors, etc., to ensure the stability and safety of the production process. For example, when a beverage bottle arrives at the filling station, the PLC will control the opening and closing of the filling machine valve according to the signal of the liquid level sensor to achieve precise filling.
Application effect: It ensures the quality and hygiene standards of the product and improves production efficiency and automation.
Textile industry
Application scenario: Control of textile machinery, such as looms, spinning machines, etc.
Specific case: In the control system of the loom, PLC can control the speed, weft insertion, warp tension and other parameters of the loom to achieve control of the quality and output of the fabric. By cooperating with sensors and actuators, PLC can monitor various states in the weaving process in real time, such as warp breakage, weft yarn exhaustion, etc., and issue alarm signals in time, and take corresponding measures to deal with it, such as shutting down, replacing weft yarn, etc.
Application effect: Improves the quality and production efficiency of fabrics, reduces manual operation and labor intensity.
Power industry
Application scenarios: Automatic control of substations, power grid dispatching, etc.
Specific case: In substations, PLC is used to control the opening and closing operations of equipment such as circuit breakers and disconnectors to achieve protection and control of the power system. It can monitor power parameters such as voltage, current, power, etc. in real time, and judge and process according to preset logic. For example, when a power grid fails, PLC will quickly issue instructions to trip the circuit breaker, cut off the faulty circuit, and protect the safety of equipment and personnel.
Application effect: Improves the reliability and stability of the power system and realizes the automated management of the power system.
Logistics and warehousing industry
Application scenarios: Cargo storage, handling and sorting in automated warehouses.
Specific example: In an automated warehouse, PLC controls the operation of stackers, conveyors, sorters and other equipment. It can accurately control the operation path and movement of the stacker according to the storage location and outbound tasks of the goods, and realize the rapid storage and retrieval of goods. At the same time, PLC can also communicate with the warehouse management system to realize the information management of goods. For example, when there are goods that need to be put into the warehouse, the warehouse management system will send the goods information to PLC, and PLC will control the stacker to store the goods in the designated cargo location based on this information.
Application effect: Improve the efficiency and accuracy of logistics warehousing, and reduce labor costs and inventory management costs.
