Since the company's LK series PLC was introduced in 2006, it has withstood the test of harsh environments and met the needs of complex users. After years of experience in product sales and system integration applications in the water conservancy and hydropower industry, Hollysys has concluded the best solution for LK applications in the water conservancy and hydropower industry.
The application of LK in the water conservancy and hydropower industry mainly includes the application of computer monitoring systems for hydropower plants, computer monitoring systems for pump stations, computer monitoring systems for gates, and computer monitoring systems for dispatching irrigation areas.
The application of LK in the water conservancy and hydropower industry is as follows:
Ø Open system design
LK products fully consider the system integration problem of system modification and expansion. LK provides a variety of open communication protocols and interfaces, including Modbus RTU master-slave station serial interface, serial free protocol interface, Modbus TCP Ethernet interface, OPC Communication interface software.
Ø Reasonable communication interface configuration
PLC's CPU integrated Ethernet interface, RS232, RS485 serial interface. For CANopen, DeviceNet, and AS-i ports that are normally configured in PLC control systems, because of the lack of application in water conservancy and hydropower, the configuration of these communication interfaces is reduced, which greatly reduces the PLC's invalid system and memory consumption and improves the CPU's operating efficiency. .
Ø Inter-station communications
There is a large amount of data communication between the PLCs of the local control units of each unit in the computer monitoring system of the pumping station and the hydropower plant and the public local control unit PLC to realize the coordinated control of the whole pumping station units. LK provides the inter-station communication function, which facilitates the exchange of data between stations through the use of communication data blocks between stations.
Ø High-cost redundant control
The LK single-rack redundancy scheme, which satisfies the high security requirements of water conservancy and hydropower projects and has competitive prices, provides the most cost-effective option for water conservancy and hydropower monitoring systems. LK single-chassis redundancy scheme Each set of PLCs uses a redundant chassis with dual CPU slots and two LK210 CPUs that support redundant systems. The two CPUs are hot standby. When one CPU fails or fails to communicate with the upper configuration software, the system switches to the hot standby CPU. The CPU switching time is one scan cycle, which ensures the control system is not interrupted. In addition to CPU redundancy, LK single-chassis redundant systems also support power redundancy, network redundancy, and bus redundancy.
About Hollysys
Beijing Helishi Group was founded in 1993. It is a high-tech enterprise group that independently designs and manufactures automation control system platforms and provides industry solutions and services. It is jointly recognized by the National Development and Reform Commission, the Ministry of Finance, the General Administration of Customs, and the State Administration of Taxation. For the national enterprise technology center. Hollysys mainly includes process automation, factory automation, machine control, nuclear power plant instrumentation, railway automation, urban rail transit automation, medical equipment and medical treatment automation, electronics manufacturing, automation industry investment management and other business units.
Beijing Heli Machine Control Technology Co., Ltd. is a professional subsidiary of Hollysys Group engaged in machine control technology. The main products mainly include programmable controllers (PLC), motion controllers, touch screens, drivers, photoelectric proximity switches, inverters, machine vision and other control products. At the same time, the company has accumulated many years of experience in the field of automation, and has given full play to its own technological advantages. With its advanced products and professional technical service team, the company provides its customers with personalized, comprehensive solutions. The company targets machine equipment manufacturers and proposes a service concept of “specialization, specialization, and localization.†It will organically integrate control technologies and mechanical equipment to realize digital track control, motion control, logic control, and process monitoring of these mechanical devices. Advanced manufacturing technology, information technology and intelligent technology are integrated and integrated on equipment products to help users achieve intelligent manufacturing. The company adhering to the "sincerely envisioned for the user" business philosophy, to create professional and advanced solutions for users, cost-effective control products, thoughtful and timely value-added services in order to achieve "use automation to change people's work, life and environment" as the goal , In order to enhance the user's competitiveness in the industry to create value.