1747-L552 Programmable controller

1、 Basic parameters
Processor performance: It has strong processing power and high-speed computing speed, and can quickly execute complex control logic.
Memory capacity: It has a large program memory and data memory space, which can store a large amount of program code and data.
Communication interface: Equipped with multiple communication interfaces such as Ethernet, RS-232, RS-485, etc., to facilitate communication and data exchange with other devices.
Input/output points: Depending on different configurations, a certain number of input and output points can be provided to meet different control requirements.
2、 Performance characteristics
High reliability:
Using high-quality electronic components and advanced manufacturing processes to ensure stable operation in harsh industrial environments.
It has multiple fault diagnosis and protection functions, such as overvoltage protection, overcurrent protection, overheating protection, etc., to improve the reliability of the system.
Flexible programming:
Supports multiple programming languages, such as ladder diagrams, instruction lists, functional block diagrams, etc., to meet the programming habits of different users.
Provide rich programming instructions and functional modules to facilitate users in implementing various complex control logics.
Easy to maintain:
Equipped with self diagnostic function, it can quickly detect and locate faults.
Modular design facilitates the replacement of faulty modules, reducing maintenance time and costs.
Strong scalability:
Additional modules can be added to increase the number of input/output points, communication interfaces, and other functions to meet the needs of different applications.
3、 Application scenarios
Industrial automation production line: used to control various production equipment, such as robots, conveyors, packaging machines, etc., to achieve automated control of the production process.
In the field of process control, as the core controller in process control systems in industries such as chemical, pharmaceutical, and power, it achieves precise control of parameters such as temperature, pressure, and flow rate.
Mechanical equipment control system: used to control various mechanical equipment, such as machine tools, injection molding machines, cranes, etc., to achieve automated operation and monitoring of the equipment.
In summary, the 1747-L552 programmable controller has a wide range of applications in industrial automation and other fields due to its high reliability, powerful performance, flexible programming, and ease of maintenance.

As a pioneer in technology, ABB has received an order from Transpower New Zealand to upgrade its high-voltage direct current (HVDC) transmission lines, which interconnect the transmission networks of the North and South Islands.

It is reported that this high-voltage direct current transmission line connecting the North Island and South Island of New Zealand is an important component of the country’s power grid system and also the power balance system between South Africa. ABB’s Ability MACH control system, as the brain or nerve center of the link, will become a key component of the upgrade.

It is reported that the population of the North Island of New Zealand is more than three times that of the South Island, and in addition to its picturesque scenery, it also provides a large amount of hydroelectric power. Therefore, the demand for electricity in the North Island has greatly increased and relies on the power supply in the South Island. The north-south high-voltage direct current transmission interconnection line, which is over 600 kilometers long, can efficiently transmit clean electricity to high demand areas. The line also plays an important role in the New Zealand electricity market by allowing electricity trading between two islands.

ABB has a historic involvement in this project. The first New Zealand HVDC transmission system was built by ABB (formerly ASEA) in 1965, which was also one of the world’s first HVDC transmission systems at that time. It was originally a bipolar 600 megawatt (MW) link with a mercury arc valve, until 1992 when the original equipment was connected in parallel to a single pole and ABB collaborated with it to debug a new thyristor pole, increasing the capacity to 1040 MW.

It is reported that this upgrade includes the upgrade of Valve 2, which is composed of electrodes, optical fibers, and valve control units based on the latest ABB Ability MACH control system. The upgrade will be completed in 2020, and its implementation will minimize the impact on the power grid and electricity trading market.

This upgrade will improve the reliability and availability of the power grid, thereby enhancing power safety and bringing clean energy to consumers, “said Claudio Facchin, President of ABB’s Power Grid Division.” This project reaffirms our strategic focus on services and commitment to integrating renewable energy, as well as the role of digital technology based on ABB’s capabilities, and consolidates our leading position in HVDC technology, becoming the preferred partner for achieving a stronger, smarter, and more environmentally friendly power grid

ABB pioneered high-voltage direct current transmission technology 60 years ago and has obtained approximately 120 high-voltage direct current transmission projects with a total installed capacity of over 130000 megawatts, accounting for about half of the global installation base.

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