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CANopen encoder

With redundant Hall sensor

FSG (Germany) has developed the MH609y-II-CAN series of rotary encoders for limited installation space. It comes with CAN and CANopen connectivity (CiA 301 and CiA 406).

The MH609y-II-CAN miniature encoder (Photo: FSG)

The encoders are typically used e.g. for measuring axes in joysticks, command units, or driving switches in construction machinery, ships, rail vehicles, or other mobile applications. Despite a diameter of 22,2 mm and a case that is less than 39 mm long, the 80-g encoders come with an integrated redundant Hall sensor for detecting 0 ° to 360° angles. It also provides a CAN interface.

Thanks to this dual measurement capability, the encoder is suitable even for safety-relevant applications. The sensor works with a resolution of 12 bit/360° and achieves a linearity of ±0,2 % with a repeat accuracy of 0,1°. The CANopen protocol is used for signal output. The encoder is equipped with an 8-pole flat ribbon connection cable and can be installed via M10x0.75 central mounting.

Because the magnetic measuring principle of the Hall sensors requires no mechanical contact, the encoder has a lifespan of at least 300 million cycles. The encoder features IP65 ingress protection, a housing made of seawater-resistant aluminum, and a 6 mm shaft made from 1,4305 grade stainless steel. It is suitable for environmental temperatures from -40 °C to +80 °C. According to the company, the product is resilient against mechanical impact, with shock and vibration resistance of 25 g over 6 ms and 4 g for 5 Hz to 100 Hz sine frequencies, respectively. The encoder supports input voltages of 18 VDC to 36 VDC and draws some 50 mA of current.


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