As is known, servo motors are equipment used for precise positioning, and the part that provides precise positioning is the encoder. Motion profiles are performed with the PID control method generally. However, in some cases, the values in the Proportional, Integral, or Derivative definitions that provide the PID are not compatible with the system. This is the main reason why the servo motor buzzes loudly at a stop or while moving. As can be seen in the example in the video below, the servo motor is in the “on” state, but a loud humming sound is heard when it is stationary.