Іnnovative microprocessor train control systems of RWA
We have the expertise and know what to offer. We provide packaged solutions! RWA automation systems have been in fail-safe and continuous operation for over 20 years. They require no extra charges for servicing and upgrading. Microprocessor train control systems.
The following basic component systems have been designed and are batch produced according to specifications:
• Dispatcher and centralised traffic control;
• Relay-processor interlocking;
• Microprocessor-based interlocking;
• Microprocessor-based automatic hump switching system;
• Microprocessor-based automatic block signalling;
• Microprocessor-based semiautomatic block signalling;
• Microprocessor-based automatic level crossing signalling system;
• Locomotives monitoring systems;
• Microprocessor-based axle count system;
• Systems for electric power supply of railway facilities
All RWA systems are adapted to current railway maintenance regulations. Our systems use exclusively standard protocols and interfaces, and batch production equipment.
This facilitates the development of systems along the following lines: integration with other systems; identification
of mobile units, train traffic schedules, etc.
RWA-developed systems are built around Schneider Electric components intended for industrial automation systems. The “two-out-of-two” system structure, jointly with high-reliability hardware (e.g., the MTBF is 300 000 — 400 000 hours (~ 30-40 years)), enables building systems whose safety and reliability parameters meet railway standards. The application software of the systems is developed in the UnityPro programming environment, which supports international standard IEC 61131-3. All this provides an integrated program development environment for control systems in several programming languages.
LLC NPP Zheldoravtomatika developed the first microprocessor-based systems for railway traffic control, and we have introduced them at Ukrainian railways and subways. LLC NPP Zheldoravtomatika is the owner of the RWA trademark and traces its history back to 1999. Today, RWA is a professional engineering company with effective business operations in Ukraine, the CIS countries, and abroad. Our systems successfully operate on the public railway, in the railway shops of the metallurgical, mining, chemical and agricultural companies, in ports and subways.
RWA Development Railwayautomatic
— automation and telemechanics systems for mainline and industrial railway transport, and subways. Research and development, and engineering research activities.
RWA Design Railwayautomatic
— automation and telemechanics systems for railway transport; developing application software with programming languages specified by standard IEC 61131 and SCADA. Design and development activities.
RWA Supply Railwayautomatic
— package supply of special-purpose equipment and hardware for railway transport companies.
RWA Construction Railwayautomatic
— introducing automation and telemechanics systems, technical support of RWA systems during their life cycle. Installation and pre-commissioning services.
RWA control systems are open architecture ones
The UnityPro software is based on the open systems principle. This facilitates its effective and seamless interaction with the software of other systems.
This program environment enables programming in the following standard languages: FBD – function blocks language, graphic programming language of the IEC 61131-3 standard and LD – the ladder logic language with
a convenient syntax to replace relay-based logic circuits.
Hence, when developing systems, programming languages are used that match closely the specific features of building railway automation systems, and include relay equipment and a set of standard blocks.
Standard programming languages enable building open-architecture systems with user-friendly software for service personnel having basic skills in computer engineering. The strict program execution sequence yields a simple internal structure of commands, which are translated to an efficient and reliable code. This excludes the possibility of introducing errors, which occur often when developing programs with object-oriented languages. Development and debugging is performed at all levels with utmost use of off-the-shelf computer-aided design (CAD) systems.
RWA control systems require no user fees. Why pay more?
Using the software requires no payment of regular user fees in the future. The software includes diagnostics tools.
Such an approach enables operating RWA-developed railway automation and telemechanics systems by the standing staff of industry specialists. Upon system commissioning, the customer is given a complete package of technical documentation, including application software presented in clear graphic form that duplicates the signalling arrangement (SA) ladder diagrams.
The printed text keeps the original application software intact and allows for amendments in compliance with the procedure in effect at railway transport for making changes in SA ladder diagrams.
We adapt customer’s personnel! Our systems – Your personnel!
No programmers are needed to make changes in the application software. It suffices to have industry specialists employed by your enterprise or specialists who have been trained at our training centres or on site during pre-commissioning activities. These specialists are granted the right to make changes in the application software similar to that as in the practice of operating relay systems (making changes in the copies of the traffic department, division, and line section). To protect from making unauthorised changes in the application software, the service personnel is assigned the following access levels:
• review and introduce changes
• only a review
The list of persons authorised to make changes in the application software is compiled by the division management and approved by the signalling and communication department management. The above-stated principle concerns all the varieties of railway automation and telemechanics systems – station, blocks, hump interlocking, level crossing signalling, dispatcher control, CTC, etc.
This approach to creation and implementation of microprocessor-based railway automation systems with an open architecture and open source software allows our customers to significantly reduce operating costs and invest the savings to develop their infrastructure. Since 2004, microprocessor centralization systems developed by RWA have been working at all the new stations of Kyiv Metro. There are 10 stations and operational staff training complex established. Two new stations have been
commissioned at the Kharkіv Metro since 2009. Also there was the reconstruction of the train control system at the
existing station without disrupting the operating mode of the metro!
Advantages of RWA systems – nothing extra! You pay only the RWA system cost and nothing else!
During the introduction and operation of RWA-developed systems, the customer pays only the system cost, and enjoys more than merely the following advantages:
• No need to increase system maintenance workscope as compared to existing relay systems.
• Using semiconductor components instead of relay contacts increases the number of switching cycles and completely excludes scheduled checking of components at signalling departments repair and service shops (functional safety with semiconductor components is ensured by using the “two-out-of-two” control structure).
• The application software is presented in clear graphical form that duplicates the ladder diagrams used in railway automation and telemechanics. In the online mode, the program algorithms (conventional “current flow over ladder diagram circuits”) are presented in interactive form to track logical dependencies graphically.
• Application software listings are printed. This keeps the original software in printed form and allows making changes in compliance with the effective procedure for introducing amendments to ladder diagrams used in railway automation and telemechanics.
• No programmers are needed to make changes to the application software. It suffices to have specialists with higher education in railway transport who have completed an advanced academic university program or have attended extension courses at a railway transport university.
RWA scientific and research activity
RWA pays special attention to scientific research activities focused on development of modern railway systems automation based on innovative technical and technological solutions using «Industry 4.0» approaches and tools. Thus today we have significantly expanded the range of offered products for all market segments!
Special edition of Railway Supply magazine
Railway Supply EXPO 2019
Participant InnoTrans 2018