Next figure illustrates the circuit model for one of the linear Halls inputs. An active Sallen-Key low pass
filter provides immunity to motor and feedback noise. Note that analog halls pins are shared with Digital
Halls interface, to avoid any signal distortion, when analog halls interface is selected, the 1 kΩ pull-up is
disconnected automatically.
Next figure shows how to connect the linear Halls to the Pluto Servo Drive. Refer to Feedback wiring
for more information about connections and wires.recommendations
Hall sensors wiring must be electrically isolated from motor, AC power and any other power
wiring.
Analog input feedback - Potentiometer
The Pluto can use an analog signal as position and velocity feedback element. In this case, rotor position
or velocity is calculated depending on the voltage level of one analog input. There are 2 analog inputs with
different input voltage range. Both can be used as position or velocity feedback input (selected via
software). Next table summarizes main features of these analog inputs:
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