Electric Motors - Spektrum BEAST X AR7210BX Mode D'emploi

Throttle
Position
When the transmitter setup is finished and the Status LED lights up in the colors as described
when switching between the different flight modes, switch to motor off position on the
transmitter. Then briefly push the button to proceed to Menu Point E.
E Divider for RPM Input Signal

Electric Motors

The RPM sensor signal usually consists of the (electric) field speed. In order to obtain the actual
motor speed, divide the field speed by half the number of motor poles. Using a 2-pole motor, the
measured speed corresponds to the motor speed. With a 10-pole motor, the field speed is five
times higher than the actual speed, so the measured speed must be divided by five.
Nitro/Gas Motors
The measured speed of the sensor may be higher than the actual speed. For example, when a
magnetic sensor is installed and more than one magnet is used for measuring the rotational
speed, the RPM output is multiplied by the number of magnets. So when two sensor magnets
are used, the RPM signal from the sensor is twice the engine revolution.
At Menu Point E, you must specifiy the factor by how much the incoming RPM signal must
be divided to get the actual motor RPM. The currently selected division factor is represented by
the color of the Status-LED. Use the rudder stick to switch between options.
Rotor RPM*
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
Manual control/
Autorotation
40%
35%
30%
25%
20%
Manual control
15%
10%
5%
0%
*The list is not exhaustive. Intermediate values result accordingly.
Status-LED
Purple Solid
3000
2760
2520
2280
2040
1800
Red Solid
1560
1320
1080
840
600
Blue Solid
29
OFF
EN