Flexible and efficient solutions for the protection of level crossings
Our iSiS-LC systems (innovative system for intelligent safety at level crossings) are future-oriented level crossing safeguarding systems, based on commercially available components, supplemented by field elements (light signal heads, barrier drives, track switching equipment) specially developed for railway applications. The flexible technical platform was developed in accordance with the CENELEC standards EN50126 / EN50128 and EN50129 and has approvals according to CENELEC up to and including SIL4.
The use of state-of-the-art and proven industrial and railway technology components ensures high reliability and long-term availability of the components. The centrally and decentrally expandable safety-related control system as the core of the system enables a previously unknown flexibility and thus the customer-specific adaptation of the system without costly new approvals.
Download the isis-LC productfolder
Low investment- and life-cycle costs
iSiS-LC is designed to reduce both the investment costs and the life-cycle costs of level crossing / railway crossing safety systems in the long term. For this reason, iSiS-LC is designed to be low-maintenance and enables components to be replaced quickly and easily.
The core element is the main controller – a safety-oriented programmable logic controller (PLC) supplied by the Pilz company and configured with two or multiple channels in accordance with the given safety level. The main controller assumes all control and monitoring tasks.
The conditions for controlling and monitoring the light signals and barriers, the dependencies for activating the driver indication signals, the monitoring of the voltage supply, the manual control logic and evaluating the axle counters are key functions which have been implemented as part of the software in the main controller. The signalisation is initiated by iSiS-LC using low-power LED signals. These feature an integrated monitoring system where the light source and the monitoring have been configured using two channels. Durable and low-maintenance motors are used for the electromechanical barrier drives. The control and regulation of the opening and closing times, as well as the monitoring of the barrier position, is realised via the main controller and the motor control circuits integrated into the barrier drive. The monitoring of the barrier position is realised via redundantly operating sensors which signal the position of the barrier to the main controller.
Special algorithms for reliable detection
Wheel sensors for counting axles in combination with specially implemented algorithms in the central computer ensures the safe and reliable recording of train movements and subsequently the activation and deactivation of the safety system.
iSiS-LC is equipped with safety-oriented IP-based protocols, as well as parallel interfaces in order to ensure the simple connection of the level crossing safety system to the other systems (i.e. the interlocking systems, etc.). The other safety systems can either be connected directly to the level crossing or via a remote monitoring controller. This is configured as a safety-oriented PLC and communicates with the main controller of one or several level crossings.
Furthermore, the system registers all occurences, errors and faults and provides extensive array of diagnostic functions via an installed Panel PC with a user-friendly touch screen.
Optional independent power supply and user interfaceProtected against failure and overvoltage
All the system components are designed for extended temperature ranges and allow the installation of the control components in outdoor cabinets. A proven lightning protection concept reliably safeguards all the components against the influences of overvoltages. Both architectures, SIL4 and SIL2, reliably handle all the individual faults, whereby the EN50129 fail-safe principles have also been universally applied.
Low energy consumption, grid-autonomous Supply optional
The low energy consumption not only reduces the running costs of the system, but also enables the grid-autonomous supply of a level crossing with solar panels and buffer batteries in special design variants.
Technical specifications
- Customisable safety architecture (SIL 4 or SIL2)
- Indoor and outdoor systems fulfil extended temperature range (control components can be housed in outdoor cabinets)
- (Unterbringung der Steuerungskomponenten in Outdoorschränken möglich)
- Control of up to 32 LED-Signals
- Control of up to 16 barrier drives
- Control of up to 24 strike-in points and up to 24 strike-out points
- Connection to different interlocking types (very variable)
- 2in1: two level crossings controllable with one indoor system
- Digital interfaces
- Mobile communication
The advantages at a glance
- Developed according to international standards EN50126, EN50128, EN50129
- Certified to the highest safety level SIL4
- Adaptable safety architecture (SIL2 and SIL4 versions with the same components) )
- Low energy consumption, therefore operation via solar supply possible in special design variants.
- Flexible system concept thanks to high- quality industry standard components
- Extensive diagnosis by the railway company and EBE service center
- Low investment and life-cycle costs