Rotary Through-Shaft Inductive eMotor Rotor Position Sensor

Accurate feedback on the angular position, direction, and speed of the rotor shaft is essential to optimize control of the motor inverter and drive the electric engine with the best possible efficiency. With lower weight, smaller dimensions, immunity to stray fields and comparably lower cost, Inductive eMotor Rotor Position Sensors offer a true alternative to conventional resolvers. The possibility to perfectly customize the sensor to the motor dimensions enables more flexibility in the development of the electric / hybrid powertrain of the future.

Inductive sensors combines a through-shaft design with the physical principle of induction in a wire loop and eddy currents to detect the position of a solid metallic target rotating above a set of coils. This allows a reduction in parts and higher design flexibility (e.g. through-shaft, end-of-shaft and arc configurations). Furthermore, inductive eMotor rotary position sensors can be designed to be ASIL-D compliant on sensor level.

An End-of-shaft Inductive eMotor Rotor Position Sensor  version is available here.


A direct, demodulated analog differential output means no additional electronics are needed to calculate rotor position.
No shielding required as inductive technology is not affected by electromagnetic stray fields.
The rugged package protects the sensor from dust, moisture, vibration and extreme temperatures for usage in the most demanding environments.
Reduced size and weight compared to resolvers.
Without any internal or external gears or linkages the sensor is easily assembled and calibrated and free from wear and tear over lifetime.
Delivers accurate motor position directly on start-up.
Allows shaft insertion from top or bottom, simple assembly and makes it even more suitable in applications where space is limited.


Signal output Single-ended demodulated sine/cosine (1.0V to 4.0V)
Differential demodulated sine/cosine (-3V to +3V)
Accuracy ±1°el
Resolution infinite
Propagation delay <4.2 μsec
Supply voltage 5V ±10%
Supply current Max 15mA
Voltage protection ±18 V
Maximum electrical speed 600.000 rpm

Other technical specifications available. Contact [email protected]

Max. speed (mec) 200.000 rpm (6-pole version)
150.000 rpm (8-pole version)
120.000 rpm (10-pole version)
100.000 rpm (12-pole version)
Mounting torque Max 2.2 N m
Target material Conductive metal

Other technical specifications available. Contact [email protected]

Operating temperature (with wires) -40°C to +125°C
Sealing IP69K

Other technical specifications available. Contact [email protected]
Higher temperatures can be studied