E-Powertrain Sensors

eRSS - e-Motor Rotor Speed Sensor

Stand-alone, contactless, active sensor providing the speed and direction of the asynchronous motors by detecting the rotation of a ferromagnetic encoder wheel mounted on the rotor shaft.

Stand-alone, contactless, active sensor providing the speed  and direction of the asynchronous motors by detecting the  rotation of a ferromagnetic encoder wheel mounted on the rotor  shaft. The speed signal is required to drive the torque of the  asynchronous machine through the inverter control board.

Benefits & Features

  • Easy signal processing / gives directly the speed information to the inverter with high accuracy
  • Low current consumption
  • Easy filtering of noise on signal
  • Potential standard ferromagnetic target wheel
  • Sensor resolution set to customer request
  • Independent of the number of motor poles pairs
  • ASIL B (ASIL D on request)
  • Rare earth free (no supply chain dependency)
  • Low cost attractive concept (ferrite magnet & 2 wires output signal)
  • Low weight

Technical Information

Magnetic differential sensing principle

Incremental output with configurable pulse lengths

2 wires output with 3 current levels

regulated 4 - 24.5 V

Supply voltage

2.0 mm

Maximum air gap

0 to 16 kHz extended to 40 kHz with 2 pulses per period

Speed ranges

-40° C ... +150° C

Temperature range

Warning and stand-still pulse optional

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