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Electronic Interlocking ZSB 2000 - Plant Control System Concept and optimised adaptation

The system controlling of electronic interlocking ZSB 2000 is responsible for safety controlling and supervision of routes, signals, switch points, track lock and according to its dependences. In addition it is responsible for the operation and integration of necessary interfaces. Based on modular system concept and consequently software realisation of functions the ZSB 2000 is very flexible and rapidly adjustable regarding project- and customer requirements. The hardware platform of electronic interlocking ZSB 2000 based on level crossing system BUES 2000. Herewith could be realised and optimised maintenance strategy because by using standardised interfaces and separation of HW and SW will be supported innovative developments in future as well. 

System concept of ZSB 2000 makes possible to install the system in small rooms, concrete houses or carbinets (ca. 5 qm). Furthermore there is no special climatisation necessary.  

The Interlocking ZSB 2000 is approved by EBA, is useable for train working regulations with the DBAG regulation KoRil 408, as an Electronic Interlocking –Regional (ESTW-R) and also in the signal-controlled train control operating procedure as Integrated Electronic Control Centre IECC in accordance with the DBAG regulation KoRil 437.

The structure of electronically interlocking ZSB 2000 is classified into three levels.

The locking level of electronic interlocking ZSB 2000 represents the secure data computer centre. The safety data computer is equipped with 3 modules (2 communication modules and 1 track module) in 2 of 2 safety architecture.

The field level represents the safe actuator level of the ZSB 2000 interlocking system. It consists of safe microcomputer systems, each is duplicated, for the controlling and monitoring of a defined function, the systems being located as a rule on the field element itself and thus not in the interlocking system building. The subassemblies of the field level are self-contained units with defined interfaces.

The disposition- and diagnostic level represents in the frame of communication with dispatcher area the connection between station computer and diagnostic centre. This level is equipped with one station computer which proceed and read in all aspects in operation and diagnostic of ZSB 2000.

The hardware components of interlocking control of ZSB 2000 are made by double computer system of interlocking level, the interface subassemblies of field elements and station computer as well. All subassemblies are pluggable equipped with corresponding non-interchangeable devices. There are no functional or project specific data included. The project relevant data are loaded during the booting phase. A changing of hardware components are every time possible without problems and any special requirements.

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The requirements of functional conditions of individual section elements depend on the topology. Specifically application areas are very different. Which section elements are to realise the electronic interlocking ZSB 2000 are working with a safety system core absolutely self dependent. ZSB 2000 control a project dependent on number of field elements realised via standard interfaces.

Such kinds of sections elements are e.g.:

  • station
  • block post
  • passing point junction
  • block adaptation at the start and end of the section

In the functional scope of the interlocking ZSB 2000 the following elements are processed:

  • electrically remote-operated switches
  • electrically remote-operated scotch blocks
  • single-slip and double-slip switches
  • spring switches (trailable points)
  • electrically locally operated switches and scotch blocks
  • manually operated switches and scotch blocks with key requirements
  • train routes
  • shunting routes
  • interlocking route safety
  • overrun length paths
  • main signals
  • distant signals
  • multi-section signals
  • speed indicators
  • auxiliary signals
  • automatic train control
  • track clear detection with axle counters
  • blocks
  • auxiliary operation devices

Controlling and supervision of the individual components are realised by standard interfaces. The communication between the levels, the modules and to field elements is realised via CAN-BUS (system bus, modules bus, element bus). Herewith will be full filled the demand in regards to modern electronic interlocking systems to split data and energy. As the result the cabling efforts could be reduced considerably.