1756-CN2R ControlNet communication module

essential information:
Manufacturer: Rockwell Automation.
Series: Belongs to the ControlLogix series modules.
Module type: mainly bridge module, used to implement ControlNet communication in the ControlLogix system.
Communication ability:
Communication Protocol: Supports the ControlNet communication protocol, which has high-speed and deterministic characteristics and is suitable for industrial automation control scenarios that require high real-time performance.
Communication speed: capable of transmitting data at a rate of 5Mbps, allowing for fast and accurate exchange of information between devices in the network.
Node Connection Count: Supports up to 99 node connections, with strong network scalability to meet the communication needs of large-scale industrial control systems.
Communication Connection Count: With a maximum of 100 Logix communication connections, it facilitates communication and data exchange with other Logix devices.
Electrical characteristics:
Input current: Draw a current of 1300mA at 5.1V DC voltage and 3mA at 24V DC voltage.
Heat dissipation: It emits 22.9 BTU of heat per hour, and the heat dissipation situation of this module needs to be considered in system design and heat dissipation planning.
Power consumption: The power consumption is 6.7 watts, and attention needs to be paid to the power supply and energy management of the device.
Isolation voltage: It has a 30V DC isolation voltage and has undergone a basic insulation test at 500V for one minute between ControlNet and the system, ensuring the stability and reliability of communication and reducing interference between different circuits.
Connection interface:
Dual ControlNet BNC interface: used to connect coaxial cables to ControlNet networks. The BNC interface has the advantages of reliable connection and strong anti-interference ability.
A ControlNet RJ45 interface: The RJ45 interface is a common network interface that facilitates connection with other devices that support RJ45 interfaces, increasing module versatility and compatibility.
A USB 1.1 port: can be used to connect external devices, such as module configuration, debugging, or data transfer, providing users with a convenient operating method.
Environmental adaptability:
Working temperature range: Under relative humidity of 5-95% (non condensing), the working temperature range is 0 ℃ to 60 ℃ (32 ℉ to 140 ℉), which can adapt to harsh industrial environments and ensure normal operation under different temperature conditions.
Resistance to vibration and impact: It has a certain degree of resistance to vibration and impact, and can operate stably at an operating impact rate of 30g and under maximum vibration conditions of 10-500Hz and 2g. It is suitable for environments with vibration and impact in industrial sites.
Application scenarios: Widely used in industrial automation production lines, process control fields (such as chemical, pharmaceutical, power and other industries), and mechanical equipment control systems, it can achieve high-speed communication and collaborative work between devices, improve production efficiency and system stability.

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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