Overview
IEC 62845:2015 is an international standard established by the International Electrotechnical Commission (IEC) that specifies the application requirements for radio remote control systems used to operate traction vehicles in railway shunting applications. This standard addresses the operation of traction units controlled remotely by personnel not physically present at the vehicle controls, ensuring safe, reliable, and efficient remote handling during shunting operations.
Targeted at both new traction vehicles and retrofitting existing ones, IEC 62845:2015 defines minimum requirements covering operational, functional, and technical aspects of radio remote control systems in this specific railway context. It facilitates uniformity in design, safety, and performance standards internationally for railway shunting operations using remote control technology.
Key Topics
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Scope and Application
The standard applies to the remote control of traction vehicles via radio signals for shunting tasks. It excludes specifics related to radio frequency carrier systems or wireless protocol specifications.
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Operational Requirements
Ensures that the remote control system supports safe and effective operation during shifting and assembling of railcars. Operational controls must reflect functional safety practices appropriate for output commands controlling the traction unit.
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Functional Requirements
Details on basic and additional command signals issued from the remote transmitter to the vehicle include commands for traction, braking, and safety features like stop functions and inadvertent movement prevention.
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Technical Requirements
Sets out environmental and electrical conditions for system components, such as transmitters, receivers, on-board control units, and interfaces, to guarantee reliability and durability within railway operational environments.
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Safety and Vigilance Features
Safety mechanisms such as vigilance devices monitor the operator's engagement to prevent accidents arising from operator inattention. Stop functions and anti-slip or anti-skid protections are integral safety elements defined.
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System Components and Radio Transmission
Defines the characteristics and interactions of transmitters, receivers, control units, and the transmission path to maintain robust communication and control.
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Maintenance and Approval Process
Highlights procedures for system maintenance, modifications, and the safety acceptance process necessary for operational certification and compliance.
Applications
IEC 62845:2015 is specifically designed for:
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Railway Shunting Operations
Remote control of traction vehicles facilitates complex shunting movements, such as assembling and disassembling trains in yards, improving both operational efficiency and personnel safety by enabling ground staff to control vehicles remotely.
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Retrofitting Existing Traction Units
The standard’s requirements can be applied to upgrade existing locomotives and shunting vehicles to incorporate compliant radio remote control systems, extending equipment life while enhancing operational safety.
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Design and Manufacturing of Railway Traction Control Systems
Manufacturers of traction vehicles and control system components benefit from clear guidelines on performance, safety, and environmental testing during product development.
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Safety Assurance in Railway Yard Operations
Compliance ensures that radio remote control systems mitigate risks associated with operator errors or unintended vehicle movements during shunting.
Related Standards
IEC 62845:2015 references and aligns with several key international standards, including:
- IEC 60571 – Railway applications – Electronic equipment used on rolling stock
- IEC 62278 – Specification and demonstration of Reliability, Availability, Maintainability, and Safety (RAMS)
- IEC 62279 – Software for railway control and protection systems
- IEC 62425 – Safety-related electronic systems for signalling
- IEC 62498-1 – Environmental conditions for equipment on board rolling stock
- ISO 14118 – Safety of machinery – Prevention of unexpected start-up
These related standards enhance the holistic safety, reliability, and environmental robustness of radio remote control systems for railway traction vehicles.
Keywords: IEC 62845, railway applications, radio remote control, traction vehicles, shunting application, railway safety standards, remote traction control, railway equipment standards, IEC railway standards, railway shunting operations, traction vehicle control, railway safety compliance.