Hall effect rotary position sensor is plug-and-play

23rd April 2014
Nat Bowers

Featuring an integral six-pin mating connector, Piher Sensors and Controls introduce the second generation non-contacting PSC-360 Hall effect rotary position sensor. The magnetic sensor package eliminates the need for wire harnesses and separate mating connector, making it easier to use than ever - engineers can simply plug the sensor into their product.

The second generation PSC-360 features all the inherent advantages of the original proven model, redundant analog, PWM or SPI output including a switch function not found in other 360º absolute position sensors. The switching point can be programmed at any angle allowing maximum design flexibility. It can also be used as an indicator for multi-turn applications. This unique low current switch design incorporates both on and off positions that provide a secondary position verification for improved safety, especially important for mission-critical applications in harsh environments.

This integral connector version uses the popular Delphi Metripack 150.2 series (12162260/12162260 /12162261). Using triple-rib peripheral silicone rubber seals, this connector family is suited for exceeding the environmental requirements in most off-highway, industrial, marine, appliance and heavy equipment applications. Additionally, the PSC-360 Sensor offers high temperature capabilities with operational performance from -40 to +125ºC and high accuracy over 360º at 0.5% linearity error.

The technology used by Piher breaks through the traditional magnetic fluxuation and complex circuitry barriers. Piher’s technology is only sensitive to the flux density coplanar with the IC surface, which eliminates those problems and optimises accuracy for 0-360º absolute position feedback. The simple, low-cost package maintains a true non-contacting air gap between the rotating magnet and the fixed sensing system.

Designed with the permanent magnet as the only moving component, the PSC-360 sensor provides a mechanical life of up to 50 million cycles. Further durability is incorporated with the fully sealed magnet and the sensor’s electronics (sensing system) encapsulated in molded plastic, providing a completely sealed IP67 rated sensor that is totally impervious to humidity. These features are suited to harsh environmental exposure where shock, vibration, high humidity and dust are unavoidable.

Piher’s technology is not only true absolute - maintaining the sensor’s true position even after a power interruption, it also offers full redundancy achieved with a dual core version within the same housing. The result is a highly configurable sensor that offers an excellent solution for the severe conditions found in industrial equipment, food processing, agriculture, off-highway, precision robotics, and HVAC monitoring and control applications. Specific uses include hand throttle control and throttle position feedback, accelerator and brake pedals, wheel angle for off highway vehicles and tractors, farm implement position feedback, forklift lift and tilt control, suspension height, marine, cranes and airport ground support vehicles.

Other PSC-360 performance characteristics include linearity of ±1% absolute (0.5% upon request), selectable analog (ratiometric), PWM, or serial protocol, up to 14-bit angular resolution, 40-bit ID number, and self-diagnostics. With the PSC-360’s modular architecture and the company’s custom engineered technology capabilities, Piher can modify electrical characteristics, mechanical characteristics, and connector configurations to meet customer specifications. For example, Piher can provide the same full scale output over as short an electrical angle as 15º.

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