Optical Pulse Generators

Railway Pulse Generator for measuring and recording speed and distance, sensing wheel slip and slide, and for various control and safety functions.

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Optical Pulse Generators Snapshot
Optical Pulse Generators Datasheet
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Product environment

Pulse Generators are converting an axle’s rotational motion into an electrical signal, which can be used to measure and record speed and distance, sense wheel slip and slide, and for different control and safety functions. Optical Pulse generators are inherently safe, and are suitable for use in SIL4 systems. HaslerRail’s Optical Pulse Generator is also designed to withstand extreme thermal and mechanical stress.

Our pulse generators are built on an optical system that operates in the infrared range. It is possible to have two different frequencies per revolution and up to six electrically-isolated sensors. And, because they offer unparalleled accuracy and reliability, our pulse generators can be used in ETCS, CBTC and other signalling applications.

Due to its accuracy and reliability, Hasler® Pulse Generators are already widely used and longtime proven in service for ETCS, CBTC and National applications.

Technical Data
  • Power supply: U_ = 15 VDC nominal (10 … 30 VDC), others available
  • Signal outputs: Push-pull, open drain, 7-16mA current, others available
  • Number of channels: 1 … 6 electrically isolated
  • Phase shift: 90°, 120°, others available
  • Number of pulses: 1 … 400 or special codes
  • Output frequency: 0 … 6 kHz (0 … 10 kHz for push-pull)
  • Protection degree: IP68 and IP69
  • Operating temperature: -40°C … +70°C
  • Weight (order of magnitude): 2 … 7 kg
  • Different mechanical sizes and adapters available
  • Duty cycle: 50 % nominal
  • Standards: EN 50155
Documentation
Optical Pulse Generators Snapshot
Optical Pulse Generators Datasheet
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Main Benefits

Axle speed measuring device with long service history
Easy to integrate
Designed for use in harsh environments and with strong vibrations
Unparalleled accuracy and reliability
Suitable for SIL-certified functions
Customizable for specific projects
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