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The company's RCM15si, a 1.5" diameter rotary optical encoder with commutation and serial interface. It combines brushless motor commutation pulses and incremental position feedback in one optical encoder. The company states that the RS 485 serial interface allows for easy motor and controller setup since motor and encoder parameters are stored in the encoders EEPROM. As index and commutation information is transmitted serially, the wire count from the encoder is reduced. The encoder features the company's slide/gap mechanism for ease of installation and maximum performance. A built-in servogroove allows ± 20-degree rotation of the encoder to align the commutation tracks with the motor poles. The encoder is available with resolutions up to 2,048 lines and provides commutation for four, six or eight pole brushless motors.
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