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PLC control cabinet

Manufacturer: Nanjing Kangzhuo Environmental Technology Co., Ltd.Official Website: ai-master.cn Times

Control cabinet name: PLC control cabinet

Control cabinet manufacturer: Nanjing Kangzhuo Environmental Technology Co., Ltd.

Kang Zhuo PLC control cabinet as the control core plays a vital role in the entire control system. The scalability of the PLC system, the real-time control of the PLC and the stability in harsh environments have also promoted the application of PLC control cabinets in various industries. The PLC control cabinet is actually a programmable control system assembled from various low-voltage components. The user can propose the equipment that needs to be controlled and the control method of the equipment according to his needs. Kang Zhuo Electrical Engineers will provide you with The perfect solution.

Kang Zhuo PLC control cabinet is generally composed of circuit breaker, intermediate relay, switching power supply, signal isolation barrier, touch screen and PLC. The brand and specifications of PLC determine the price of PLC control cabinet. The layout of the PLC control cabinet is shown in Figure 1:

PLC control cabinet

figure 1

The PLC control cabinet shown in Figure 1 is composed of Siemens S7-300PLC, which belongs to high-end products and has a modular structure. It is also a widely used brand, but with the advancement of technology, this series of products will be replaced by S7-1500. The following is an introduction of a PLC control system composed of S7-300 by Kang Zhuo Technology's electrical engineers.

One of the advantages of the PLC system is the scalability of the system. The S7-300PLC uses a modular structure. The points can be expanded according to demand. The system can be expanded by adding modules to the right of the CPU or establishing an ET200M. At present, ET200M adopts more methods. The ET200M system can extend the control system to the side of the equipment, which saves a large number of connection cables. The system is widely used in some places with a large area and scattered equipment, such as sewage Treatment plant, etc. ET200M system diagram is shown in Figure 2:

PLC control cabinet ET200M network structure

Figure 2 ET200M network structure

The second advantage of the PLC system is its powerful communication function, which supports various communication methods commonly used in the industry such as Modbus RTU, Industrial Ethernet, Profibus-DP, MPI, PPI and so on. Industrial Ethernet and Profibus-DP communication are commonly used in large-scale systems, and Modbus-RTU communication is commonly used with third-party instruments. In the sewage treatment industry, the field control cabinet and host computer system often use industrial Ethernet to ensure communication. Speed supports long distance communication. The use of photoelectric converters can further extend the communication distance and form a ring network redundant system. The network structure of the ring network redundant system is shown in Figure 3:

Fiber optic ring network redundant system of PLC control cabinet

Figure 3 Optical fiber ring network redundant system

The premise of forming a fiber optic ring network redundancy system as shown in Figure 3 is that each control cabinet must have a CPU and be configured with an Ethernet interface and must have a photoelectric converter that supports ring network redundancy. The advantage of the optical fiber ring network redundancy system is to provide double-layer protection of the communication network. No matter where the fiber is disconnected, the function of the entire system will not be affected. Each control site can communicate with each other but is independent of each other.

With the widespread application of GPRS technology, more and more third-party GPRS devices are used in PLC systems, and the use methods are becoming more and more simple. Adding the GPRS function to the PLC system is like installing a pair of wings to the PLC, which can be placed at any location where conditions permit, and it can be remotely debugged and monitored to avoid engineers' back and forth, saving time and effort. Guangzhou Jukong's GRM200G series PLC dedicated GPRS module has all the above functions. The system composed of GRM200G is shown in Figure 4:

PLC control cabinet GPRS system

Figure 4 GPRS system

The PLC control cabinet is simple and clear, and the components used are also single. There is no complicated circuit structure like the traditional control cabinet, and it uses human-safe DC 24V electric control AC equipment, which is convenient for wiring, debugging and maintenance. The change of the device control logic does not need to change the hardware wiring, only the software program can be changed. A computer and a professional engineer can solve all problems for you, saving a lot of manpower, financial and material resources.

Kang Zhuo PLC project performance review

Kang Zhuo Technology always embraces ideals and strives forever. Our mission is to bring a happy and safe life for human beings, and strive to research and develop automation technology in various environmental protection causes. With excellent technical level and perfect pre-sale, sale and after-sales service, Kang Zhuo Technology has won the trust of customers, such as Nanjing Nangang 1 # Ditch Pump Station, Nantong Lusi Sewage Treatment Plant, Hebei Xianxian Wastewater Treatment Plant, Yuexiuyuan Pumping Station, Wuqing District, Tianjin, Nanjing Friendship and Pumping Station, Nanjing Military Region General Hospital, Jiangsu Provincial People's Hospital, Nanjing Children's Hospital, Yangzhou First Hospital, Nanjing Lukou Airport, Shanghai Pudong Airport, Shanghai Oriental Pearl Memorial Towers, Shanghai Paris Spring Hotel, Mengniu Group, Jiangsu University of Aeronautics and Astronautics, Nanjing University of Science and Technology, Nanjing International Exhibition Center, China Transmission and other key projects in the city. In addition, there are many property buildings that also have our footprint. At present, our company has become their long-term partner and established friendly cooperative relations. Some of the company's recent PLC control cabinet projects are shown in the following table:

List of recent PLC projects of Nanjing Kangzhuo Environmental Technology Co., Ltd.

Serial number

User units

project type

Note

1

Jiangsu Variety Photovoltaic

Fire control

PLC + HMI

2

Xiamen Haicang Wastewater Treatment Plant

Lime silo

PLC + HMI

3

Nanjing Nangang No.1 Ditch Pumping Station

Pumping station control

S7-200 + Configuration King

4

Pump Station of Jinhu County, Suqian City

Pumping station control

PLC + HMI

5

Shandong Omer Sell Heat Transfer Technology Co., Ltd.

Water temperature control

PLC + HMI

6

Hefei Jinghong Electric Co., Ltd. Sewage Treatment Station

Sewage treatment

S7-300PLC

7

Servo Control of Nanjing University of Aeronautics and Astronautics

Servo Control

Mitsubishi PLC

8

Yuxiuyuan Pumping Station, Wuqing District, Tianjin

Pumping station control

PLC + HMI

9

Mengniu Group

Sewage treatment

S7-300

10

Paris Spring Hotel

Sewage treatment

S7-200 + HMI

11

Nanjing Drum Tower Hospital

Sewage treatment

PLC + HMI + Configuration King

12

Xuzhou Taolan Chemical Park Sewage Treatment Plant

Automatic control system

PLC + Configuration King

13

Nanjing Chenguang Group

Automatic control system

PLC + HMI

14

Lusi sewage treatment in Nantong

Sewage treatment

PLC + HMI

15

Yangzhou First Hospital

Sewage treatment

PLC + HMI + Configuration King

16

Nanjing Maternal and Child Health Hospital

Sewage treatment

PLC + HMI + Configuration King

17

Nanjing Cancer Hospital

Sewage treatment

PLC + HMI + Configuration King

18

Nanjing Children's Hospital

Sewage treatment

PLC + HMI + Configuration King

19

Henan Qixian Wastewater Treatment Plant

Sewage treatment

S7-300PLC + Configuration King

20

Nanjing First Prison

Automatic control system

S7-300PLC + Configuration King

twenty one

Nanjing Osmanthus Duck (Group) Company

Automatic control system

PLC + HMI + Configuration King

twenty two

Chinese People's Liberation Army Factory 3521

Automatic control system

S7-300PLC + Configuration King

twenty three

Nanjing Wuzhou Refrigeration Group Co., Ltd.

Automatic control system

S7-300PLC + Configuration King

twenty four

Nanjing Ancient South Hotel

Automatic control system

PLC + HMI

25

Nanjing Baixia Inspectorate

Automatic control system

S7-300PLC + Configuration King

26

Nanjing Zhongshanling Sewage Treatment Station

Sewage treatment

PLC + HMI + Configuration King

27

Inner Mongolia Dalate Banner Sewage Treatment Plant

Sewage treatment

S7-300PLC + Configuration King

28

Nanjing University of Science and Technology

Constant pressure water supply

PLC + HMI

29

Nanjing Agricultural College

Automatic control system

PLC + HMI

30

Nanjing Military Region General Hospital

Sewage treatment

S7-300PLC + Configuration King

31

Nanjing Lukou International Airport

Incineration system

S7-300PLC + Configuration King

32

Kaifeng County Wastewater Treatment Plant in Henan

Sewage treatment

S7-300PLC + Configuration King

33

Qingdao Economic and Technological Development Zone Sewage Treatment Plant

Sewage treatment

S7-300PLC + Configuration King

34

Nanjing Normal University

Automatic control system

PLC + HMI

contact us
Company Name: Nanjing Kangzhuo Environmental Technology Co., Ltd.
Address: Xiongzhou Industrial Park, Liuhe District, Nanjing
Postcode: 211500
Website: ai-master.cn
Email: zgkangzhuo@163.com
Consulting Tel: 4000-940-400
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