DIN EN 50617-2:2025-09

This document specifies parameters for the design and usage of axle counter systems. For this, this document specifies the technical parameters of axle counter systems associated with the magnetic field limits for RST in the context of interoperability. In addition, test methods are defined for establishing the conformity and the performance of an axle counter detector. This document is intended to be used to assess compliance of axle counter systems and other forms of wheel sensors used for train detection, in the context of the European Directive on the interoperability of the trans- European railway system and the associated technical specification for interoperability relating to the control-command and signalling track-side subsystems. This document can also be used for axle counter systems installed on lines which are not declared as interoperable (including metro and tram lines). For wheel sensors and wheel detectors in other applications than axle counters but using the same sensors on the rail and detection circuits, transient and continuous interference can be considered as equivalent to axle counter detectors or axle counter sensors. Under interoperability, the frequency bands and rolling stock emission limits are currently defined in the axle counter FrM as specified in the ERA/ERTMS/033281 document. Specific ice tests designed to assess the effect of ice on the design of axle counters are not within the scope of this document. The standard differs from DIN EN 50617-2 (VDE 0831-617-2):2016-05 as follows: a) Annex D: new informative annex on intermodulation effects that may affect the compatibility limits for vehicles. This document defines technical parameters for axle counting systems used in railway technology for track clearance signaling and in order to ensure interoperability within the trans-European railway system. In addition to railway lines, metros and trams can also benefit from this standard, particularly when testing wheel sensors and evaluating intermodulation effects.