Speed and direction sensors improve AC induction motor performance

The sensors use Hall-effect technology to provide a non-contact method to measure both the rotational speed and direction of a ferrous material toothed gear mounted to an AC induction motor shaft.

Industrial equipment applications include vehicle speed, vehicle motion, raising a machine’s lifting fork, wheel-speed direction and traction and braking control.

The SNG-Q series sensors can be used to help control power regulation of hybrid electric transmissions as well as hybrid engines in heavy-duty trucks, buses and agricultural vehicles. In addition, they can help control the speed and position of escalators and elevators.

The new sensors offer engineers a wide operating temperature range (-40°C to 150°C), electrical noise radiated immunity (rated to 100V/m) and IP69K environmental sealing to provide flexibility of use in the application. The supply voltage ranges from 4.5 to 26V.

Because industrial equipment and vehicles are often used in dirty environments, such as factories, construction sites and agricultural areas, as well as in both hot and cold environments, speed and direction sensors must be durable, resistant to moisture intrusion, accommodate a wide operating temperature range and be immune to dirt and dust.

Honeywell offers both 35 and 45mm housing lengths for the SNG-Q series sensors.