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INDUSTRY FOCUS


integration ofmultiple asset types and sub systems into a common communication network. More equipment inside an enclosure makes thermal management more complex and may increase the risk of attempted theft ormalicious interference. Because technology is continually evolving, and different digital systems may be deployed at different rates, the combination of equipment installed in an enclosure may change significantly over its working life.


NEXT GENERATION PROTECTION As the rail industry finalises its technical specifications for next-generation equipment enclosures, specialist providers are already hard at work developing innovative solutions tomeet the sector’s needs. The latest designs, such as Rainford Solutions’ TRACKSAFE system, combine years of experience in the development of high- reliability enclosure systems with the advanced structural and thermal analysis techniques. Sometimes, it is the details of an enclosure


design thatmake all the difference. Details like vented, double-skinned body panels that provide additional sun protection and cooling; or full- width lower and upper vents tomaximise passive air flow; or protected hinges and anti-jemmy strips to resist determined intrusion attempts. Rainford’s modular design systems means


enclosures can evolve as requirements change – upgrading a unit from passive to active cooling, for example, or providing segregated access for different equipment. The same design


philosophy also helps us meet the rail industry’s requirement that individual panels, or even an entire enclosure, can be quickly and safely replaced without taking equipment offline. Above all, rail industry customers need to


work with enclosure manufacturers that understand the industry’s needs. Every site, every combination of equipment and every digital deployment plan creates a unique set of requirements for enclosures. At Rainford, we


RAIL


take the time to consult with our customers, understand their needs, and design the most appropriate solution. All our enclosures are manufactured in the UK, ensuring stringent quality control, and keeping supply chains short. At every step, our goal is simple: reliable, long- termprotection for our customer’s equipment.


Rainford Solutions https://rainfordsolutions.com


The digital railway creates new challenges for the people who build, operate and maintain the rail network


REVOLUTIONISING RAILWAY CARRIAGE WI-FI INSTALLATION


An access point with integrated antenna, developed in cooperation with HUBER+SUHNER, has been introduced by ELTEC Elektronik, a subsidiary ofWestermo Network Technologies. This, the company explains, is designed to revolutioniseWi-Fi installation in rail carriages due to its


compactness and enables railway operators to provide significantly higher data throughput per passenger for a better on-board Wi-Fi experience. The CyBox AP-A provides stable, secure and broadband connections


between the local Ethernet and mobile devices, enabling users to communicate with the Internet or access local data such as timetable information and multimedia data in a passenger train or underground according to the latest standards. It was developed to provide multiple Wi-Fi access points in the


passenger compartment, thus offering a higher bandwidth for each client and enabling faster surfing. The combination of access point and antenna in a common housing reduces the installation effort and at the same time brings the access points closer to the user. The redundant Wi-Fi networks increase operational reliability because if one access point malfunctions, the remaining access points step-in and the total bandwidth is reduced only hardly noticeably. The CyBox AP-A access point requires only one single Ethernet cable,


which provides power (PoE+) as well as data connectivity. This provides railway operators with a compact option that allows, the company claims, easier and more cost-effective installation compared to other solutions, as it does not require additional antennas and RF cables.


Westermo Network Technologies www.westermo.com


KEEPING POWER ON TRACK AT EUSTON


The High Speed Two (HS2) railway line will use Euston station as its main terminus hub, with the number of seats out of the station during peak hours set to double. To support this increased capacity, the terminal is being enlarged to include 11 new 400m-long platforms for high-speed trains. However, in order to meet the new electrification requirements, the


telemetry system for the rail network’s electrical supply also needed to be upgraded. Sella Controls proposed the use of TRACKLINK remote terminal units (RTUs) developed in partnership with Mitsubishi Electric. This utilises a PLC to process signals from field devices as well as reporting data to SCADA systems in the control room. At Euston, the control system uses an uncommon framework. Unlike


smaller railway terminals, which only use a single RTU to address their needs, the London railhead’s electricity generation, transmission and distribution system is divided into multiple subsidiary parts. Known as substations, they are key for effective power distribution and control. The master RTU is used to link to remote I/O panels placed at each substation. Thanks to this setup, the main controller can complete auto reconfiguration procedures in the event of a power loss at the station. To ensure reliable and fast inter-substation data transfer, a proven


high-bandwidth open network technology was needed, soMitsubishi Electric recommended CC-Link IE. This open industrial Ethernet technology offers gigabit bandwidth and uses a token passing method to provide real-time, deterministic communications. This minimises latency and jitter, facilitating the transmission of large volumes of data without congestion. To ensure a responsive control system, CC-Link IE was combined with


Mitsubishi Electric’s iQ-R series modular PLC as the new building block of the RTU. In addition, a GOT 2000 HMI was incorporated within the master RTU panel to maximise visibility and accessibility. The new telemetry solution has been key to ensuring a highly reliable


traction power infrastructure within the terminal. CLPA


eu.cc-link.org JUNE 2022 DESIGN SOLUTIONS 41


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