Point Machine Controller SIL4: safety and precision in rail speed control
Point Machine Controller SIL4: safety and precision in rail speed control

Point Machine Controller SIL4: safety and precision in rail speed control

The SIL4 machine point controller represents a significant breakthrough in rail speed management by providing high safety and accuracy for train operations. Designed to meet the SIL4 standard, this advanced system not only improves operational efficiency but also contributes to safer and more sustainable rail transportation.


Machine point controller overview

Developed by Eletech, Elemaster's international design center manager, this machine point controller (also known as an analog speed pointer) enables precise speed control of rail vehicles. Using a rotary encoder, it allows train drivers to set and validate the desired speed via a confirmation button on the train's driver's desk. This approach simplifies daily operations and minimizes the risk of error, greatly improving overall safety.


Key features and operation

The Point Machine controller operates with two electronic boards housed in a robust metal casing and powered by a 110V system battery. The speed setting signal is transmitted as a 4-20 mA current signal, ensuring clear and accurate communication with the train speed management system.

Key features include:

  • SIL4 safety architecture: complies with EN 50129 standard for maximum safety.
  • Robust hardware design: meets EN 50155 standards for railway equipment.
  • Software compliance: follows EN 50657 guidelines for rail vehicles.
  • Fail-safe architecture: ensures operational reliability.
  • FMEA analysis: conducted based on IEC 62380 standards.
  • IP55-rated enclosure: ensures protection from dust and water.
  • Multiple relay outputs: four relay outputs enhance functionality.


Commitment to innovation and sustainability

Eletech's commitment to innovation is evident in the design of the Point machine controller, which adheres to Ecodesign guidelines. This approach facilitates maintenance and upgrades, extending the product life cycle and minimizing electronic waste. Dual-channel safety architecture and advanced technologies ensure high levels of safety and optimized operational efficiency.


Rigorous testing for reliability

To ensure reliability and compliance with safety standards, the Point Machine controller underwent extensive testing, including Hardware in the Loop (HIL) bench functional testing, type testing, and fault injection testing. Code coverage analysis was performed to ensure thorough testing of all software components, minimizing the risk of failure under various operating conditions.


A new standard in railway safety

The SIL4 point machine controller represents a major advance in railway safety and operational efficiency. Its innovative design and use of advanced technologies reflect Eletech's commitment to sustainability and quality in the rail industry. By introducing cutting-edge solutions, the Elemaster Group strengthens its leading position, contributing to an increasingly safe and sustainable rail transportation system.


Source: https://www.elemaster.com/en/point-machine-controller-sil4-safety-and-precision-in-rail-speed-control/

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