Hollysys DCS - the development trend of DCS

1. Circuit isolation The isolation of analog circuits is more complex, mainly depends on the accuracy requirements of the transmission channel, the higher the accuracy requirements, the higher the cost of the channel; However, when the performance requirements rise to the main contradiction, the isolation components should be selected based on performance, and the ...

DCS usually adopts a hierarchical and progressive structure, each level is composed of several subsystems, and each subsystem achieves a number of specific finite goals, forming a pyramid structure. Examining the hierarchical structure of DCS, DCS level and control management level are the two most basic links that make up DCS. Process control...

Hollysys Automation provides automation solutions for many fields. 　　Intelligent TCM solutions In order to make the drug achieve the harmony and unity of the doctor's peace of mind, the pharmacist's formula, and the patient's peace of mind, higher requirements are put forward for the pharmacy environment and hospital management. But...

In order to further strengthen the comprehensive cooperation with Shaanxi Traffic Control Group, on August 11, 2022, Xu Yue, Chairman and Co-President of Hollysys Group, visited Zhang Wenqi, Secretary of the Party Committee and Chairman of Shaanxi Traffic Control Group, and the two sides conducted in-depth exchanges and cooperation on topics such as business ecology and smart highways.

On April 7, 2021, the "2021 China Software Industry Annual Conference" hosted by the China Software Industry Association was held in Beijing. With years of technology accumulation and outstanding strength, Hollysys Group won the title of "The Most Influential Enterprise in China's Software Industry in 2020", as well as the "...

Hollysys' safe and trustworthy DCS control system uses the controller K-CU11 for the K series large-capacity trusted controller module, which adopts advanced PowerPC architecture high-performance main processor and security components based on national cryptography algorithm, and has the security functions of static trusted start and dynamic trusted measurement. ...

DCS is the English abbreviation of distributed control system (Distributed Control System), distributed control system is referred to as DCS, which can also be literally translated as "distributed control system" or "distributed computer control system". The decentralized control system is based on the microprocessor, and the control function is decentralized.

Merit: 1. High reliability: The DCS system has multiple redundancy, backup and recovery mechanisms, which can ensure the high reliability and stability of the system. 2. Sensitivity: The DCS system can be customized according to different industrial processes to meet different control requirements. 3. Efficiency: D...

In recent years, the State Administration of Safety Supervision, the Ministry of Industry and Information Technology, the Ministry of Education, and the Ministry of Finance have successively launched a number of national policies to implement major decision-making projects such as vocational skills improvement actions, safety skills improvement actions, and vocational education reforms, aiming to create a highland for the training of technical and skilled talents.

1. The switching signal of PLC controls the inverter The output point and COM point of the PLC (MR type or MT type) are directly connected to the STF (forward start), RH (high speed), RM (medium speed), RL (low speed), and SG input ports of the inverter. PLC can control the frequency conversion through the program ...

There are many new developments in the field of DCS-related, which are mainly manifested in the following aspects. (1) The system function is developing in the direction of openness. The structure of traditional DCS is closed, and it is difficult to be compatible with DCSs from different manufacturers. The open DCS will allow users to set a larger system ...

(1) There are three forms of programmable controller: relay output, thyristor output, and transistor output. (2) The wiring of the output terminal is divided into independent output and common output. When the output relay or thyristor of the PLC is activated, the two output terminals of the same number are turned on. In different groups, you can ...

Resistive coupling interference In the process of work, many factories ignore the problem of wire aging. When a variety of signal lines are transmitted together, other transmission signals will be affected due to the aging and leakage of the insulation material on the wire, and other transmission signals will be interfered with. ...

1. DCS is a "distributed control system", while PLC (programmable controller) is just a control "device", which is the difference between the two. The system can realize the function and coordination of any equipment, and the PLC equipment only realizes the function of this unit. 2. In terms of networking, the DCS network is ...

LE series is a new generation of high-performance small and medium-sized PLC products launched by Hollysys, which is suitable for small and medium-sized industrial equipment control and distributed long-distance monitoring applications. LE-PLC combines the compact structure of small PLC products with the abundant functional advantages of medium-sized PLC products, and can support up to 20 local IOs or long ...

1. The role is different A PLC (Programmable Logic Controller) is an electronic system designed for digital operations in an industrial environment. The inverter is the application of frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor working power supply.

Recently, Hangzhou Hollysys Automation Co., Ltd. (hereinafter referred to as Hollysys Company) successfully signed a contract with PetroChina Liaoyang Petrochemical Branch (hereinafter referred to as PetroChina Liaoyang Petrochemical) to construct and rectify 16 sets of control system projects during the planned overhaul in 2023 - 9 ...

In general, PLCs are extremely reliable devices with a very low failure rate. The probability of hardware damage such as the CPU of the PLC or software running errors is almost zero; If the PLC input point is not caused by strong current intrusion, it will hardly be damaged; The normally open point of the PLC output relay, if it is not a short circuit of the peripheral load ...

1. Lack of motivation It may sound simple, but it's good to check the simple stuff first. Thoroughly inspect all power connections and cables for damage that could cause a short circuit. Make sure your power supply is functioning properly. Use a voltmeter to check if the grounding and voltage are correct. 2. Bad ...

1. Power supply: The power supply is used to convert the alternating current into the direct current required inside the PLC, and most of the PLCs are powered by switching regulated power supply. 2. Central processing unit: The central processing unit (CPU) is the control center of the PLC, and it is also the core component of the PLC.