The cores of the connecting cable are terminated at the terminal block of the trackside connection box or cable distribution box. An additional premounted flexible tube protects the cable against physical damage. Connection The double wheel detector has an integral connecting cable with four cores. No holes need to be drilled into the rail for this purpose. Alternatively, the wheel detector can be fixed using a clamp at the rail base. Notches in the bearing surfaces of the wheel detector housing and fixing plate allow a fine adjustment of the mounting height below the top of the rail. The wheel detector housing is fastened to the fixing plate by additional bolts. Existing drill holes in the rail web, which are 145 mm or 270 mm apart, can be used alternatively. The fixing plate between the wheel detector and rail web is bolted to the rail web through two drill holes 13 mm in diameter. traversal speed of 80 kph > Development and assessment to Cenelec standardsģ Rail web (drill hole) ASNI (two-channel) Interlocking / control Rail base (clamp) ASNI (four-channel) Configuration principle Constructional details The electronics of the WSD E Double Wheel Detector is accommodated in a plastic housing. The below components are required for these functions: > WSD E Double Wheel Detector with rail web attachment (drill holes in the rail web) or optional: rail base attachment (clamp attachment without drill holes) > ASNI interface board Customer benefits > Maintenance-free readjustment is dependent on the degree of wear of the rail > Compatible with existing wheel detectors and track-installed switching devices for switching and indication functions via a NAMUR interface > No mechanical adjustments necessary > No electrical adjustments necessary (intelligent automatic balancing) > No trackside connection box required > Mounting-compatible with other wheel detector attachments (same drilling dimensions) > Rail web or rail base attachment > Rail web attachment possible over a sleeper > No interference from conventional magnetic brakes > Max. This type of wheel detector is mainly used in track vacancy detection equipment and for switching and indication functions in track-bound traffic. Structure and principle of operation The WSD E (Wheel Sensor Double Electronical) Double Wheel Detector is an electronic switch which responds contactlessly to wheel flanges. On account of its standardised interface however, the double wheel detector can be connected to systems of other vendors without any modification to the existing evaluation units. The WSD E Double Wheel Detector has been integrated into Simatic rail automation systems as component of the AzS7 track vacancy detection system. The WSD E Electronic Double Wheel Detector from Siemens Transportation Systems is a state-of-the-art product and suitable for use in private railways, light rail transport, industrial and branch services. 2 The WSD E Electronic Double Wheel Detector Efficiency in the Rail Services In addition to a high availability, flexibility and economic efficiency are also of great importance for signalling systems.
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