53. RDC

53.1. Overview

The rdc example project demo position information from a rotary encoder.

53.2. Board Setting

Connect the rotary encoder driver board to the motor interface (Please refer to RDC Pin Description), then connect the rotary encoder to the driver board.

  • Driver board 14V power supply

  • RDC model SG52-4-G12.7

  • RDC encoder have 4 pole, so one turn of the electrical angle corresponds to 1/4 turns of the actual position.

  • The start position of the RDC encoder needs to ensure that there is enough voltage in both phases to acquire the over-zero position, otherwise there will be an error in the position during the movement.

53.3. Running the example

Rotate the motor and the serial terminal will output the angle information as follows:

 theta: 1.
 theta: 20.5.