Lenord+Bauer has developed a speed sensor for applications in which high demands are made on drive efficiency and driving comfort. In the GEL 2477, robustness and reliability have been combined with higher resolution. The energy consumption of the motor and the noise it generates can be reduced through torque ripple. This particularly pays off in situations where a high torque is demanded, enabling smooth start-up even under high loads or on inclines.
The company's sensors have proven their worth in traction systems of rail vehicles for decades. For traction control, the available force must be dosed very dynamically and sensitively in order to prevent the wheels from spinning. While standard speed sensors deliver one pulse per tooth, with the 2-channel sensor GEL 2477 the resolution of the internal analogue signals is increased by a factor of 2, 4 or 8 and a greater number of pulses is achieved. This allows a significant improvement in control accuracy even with smaller target wheels with few teeth. The proven HTL interface with square-wave signals has been retained, allowing the existing control systems to continue to be used without modification.