foreword
With the improvement of people's living standards, people's requirements for the living environment are also increasing. In recent years, with the rapid development of the automobile industry, the problem of automobile pollution has become increasingly prominent.
In the production link, major manufacturers have made outstanding improvements under the strict control of the national environmental protection department; however, in the after-sales guarantee link, due to various reasons, the environmental protection link is not very well done. However, in recent years, with the increasing control of environmental protection by the state, the after-sales guarantee link of automobiles has also been included in the daily supervision of the automobile environment. Therefore, it is urgent to improve the automotive sheet metal process in time.
In view of the impact of the automotive sheet metal painting process on the environment, it is still important to improve the grinding dust treatment equipment in a timely manner. In response to market demand, our company has launched a control system for the collection of grinding dust.
The control system adopts the GOME all-in-one machine EX3G-70KHA-44MT-2AD2DA-A4-A0, and the frequency converter adopts GOME CM540-7.5K.
1. Project introduction:
This control system is mainly used in the after-sales support of automobiles. It is a high-performance environmental protection device for collecting dust generated after sheet metal grinding in the process of automobile sheet metal painting to reduce the impact on the surrounding environment.
The system is divided into the main control cabinet and each station part:
2. Function introduction:
This system mainly uses PLC and human-machine interface to coordinate the relevant action logic of the control system. Compared with the traditional system, this system has several major functional improvements:
1. The domestic Gumei touch screen PLC integrated machine is adopted. On the premise of perfectly realizing the function, the wiring process is optimized to the greatest extent, and the troubleshooting process is simplified. The external controller power supply ensures the reliability of the all-in-one power supply to the greatest extent.
2. The PID algorithm of PLC is used to control the frequency converter, which reduces the occurrence of bad power consumption to the greatest extent on the basis of energy saving and environmental protection.
3. The control process is optimized to realize automatic standby when the station utilization rate is low, and increase the power output when the station utilization rate peaks to realize an automatic power management.
three. Program introduction
HMI screen part program:
PLC part program:
Four. Project summary
1. Using the PID algorithm of PLC (supporting self-tuning), it can quickly and flexibly adjust the working conditions of the inverter, and the frequency conversion speed regulation is flexible, which is suitable for different places.
2. Automatic energy consumption management, matching the practical power to the greatest extent and reducing power waste.
3. Using domestic brand PLC all-in-one machine and domestic brand inverter, while reducing production costs, after-sales support services are optimized, so that faults can be quickly handled and functional requirements can be updated in a timely manner.
Incremental Encoder is commonly used, and Absolute Encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the application situation and the purpose and requirements to be realized.
Incremental Linear Encoders,Linear Optical Encoder,Linear Position Encoder,Encoder Bearing Tester
Yuheng Optics Co., Ltd.(Changchun) , https://www.yhencoder.com