Speed Signal Doubling and Processing on Rolling Stock
Railway | Rolling Stock
Sector
Maximize the availability of safe speed signals for all systems in the rail vehicle
Application
Universal speed signals from 2 channels speed sensor or current signal
Measured Parameter/Signal converted/isolated
SIL2/SIL3 and SIL4 safety
Key Requirements
Simplifies Retrofits, Saves Cost for new Vehicles
Many systems in and on rolling stock require information on the current speed at any given time. They include brake systems and drive technology, two systems that are key to functional safety. This is why the speed encoders available to the speed signal must function reliably and precisely.
If additional systems need to process speed information, additional speed encoders are usually mounted on the vehicle axles. But space is limited there. And installation and wiring are an investment in money and time. With the P 16800 and P16000, Knick provides an extremely simple solution. The signal of an existing speed encoder is decoupled and made available for other applications. The process is non-interacting in accordance with SIL safety level. The speed encoder signal is neitherinfluenced nor interfered with on its way to the control unit.
The speed signal doubler P16800 is the ideal solution for retrofitting rail vehicles. The device helps to quickly and cost-effectively implement the extensive requirements for odometry that e.g. result from the European standardized train control system ETCS.
Product highlights for Measurements on Rolling Stock
P16800 – Universal Speed Signal Doubler SIL2/SIL4
The use of the P16800 simplifies the retrofitting of rail vehicles with control systems that require speed information, or makes such retrofitting possible in the first place. In new vehicles, the number of speed sensors can be reduced, which optimizes initial and maintenance costs.
P16000 – Pulse Counter/Pulse Transmitter SIL3
Pulse frequency conditioners for decoupling of signals from safety-related circuits and doubling of standard and impulse signals. The speed encoder signal is neither influenced nor interfered with by the P16000 on SIL 3 safety level.