Spektrum BEAST X AR7210BX Mode D'emploi page 20

EN
For electric motors, the motor speed can be determined electronically. For this purpose,
a phase sensor (e.g. BXA76013) is connected to one or two of the motor phases. Some
electronic speed controllers (ESCs) offer a direct signal output for the RPM signal so that no
additional sensor is required.
To see how the sensor is mounted in detail, please refer to the instruction manual from your
sensor or helicopter. The wire with the RPM signal is connected to the [AUX2|RPM] input
pin of Spektrum AR7210BX.
NOTICE: The supply voltage corresponds to your receiver power supply voltage.
Here are some installation and connection examples. As described, virtually all kinds of RPM
sensors may be used which transmit the motor RPM as periodic low-high signal. Unfortunately
it is impossible to try and enumerate all types. Consult your dealer about whether a particular
sensor can be used in conjunction with Spektrum AR7210BX.
Electric Drive System with External Phase Sensor
Connect the motor wires of the phase sensor with any two phases of the electric motor. We
recommend soldering those wires to the plugs of the ESC. For maintenance purposes, it is easier
to remove the motor from the model later. In some cases, a single phase wire is sufficient. Usually
this is the case when the ESC powers the system with a BEC thus there is no galvanic isolation
between motor and receiver circuit. However, we recommend using both wires, ensuring that the
sensor provides an interference-free signal.
The ESC is plugged into the [THRO] output.
Electric Drive System with RPM Signal Output from the ESC
The ESC's signal input wire is plugged into the output [THRO] as usual.
BXA76013
RPM
1
BL
Sensor
2
ESC
RPM signal wire
ESC
20
Control signal wire