4
P
ROPELLER POSITIONING
The positioning feature allows moving the motor/propeller to the exact position required for safe landing, or
which is just comfortable for further flying. With just a few external components (Hall-sensor and a small
magnet) you can enable this feature and prevent the risk of damaging your propeller during landing. The
magnet needs to be properly fixed to the rotating part (either motor or the propeller), and the Hall-sensor has
to be located in the fuselage, so that the magnet matches the Hall-sensor at the target propeller position. After
enabling the positioning feature in the menu (Prop Position =
Hall Sensor
), set also the Positioning PWM, so that
the motor spins slowly but smoothly. You may also change the duration of actively held motor position
(Position Hold Time) which is applied after the correct position is found. The position-hold feature is useful in
case of retractable engine since it doesn’t allow propeller to be moved while retracting.
Connect the Hall-sensor of the propeller positioning function to the
IN-B
port of the controller.
Note:
Use a high quality CA or Epoxy glue to fix the magnet in the rotating part. You can also drill a small
hollow in the spinner and fix the magnet in it.
Warning:
Do not use higher PWM than necessary otherwise the motor may overheat. Generally use as low
PWM as possible so that the motor holds its position reliably. Check the current consumption using the
telemetry.
M
OTOR IDENTIFICATION
Some motor brands contain an integrated temperature sensor compatible with the FALCON speed controller.
This sensor (T125-ID) might be used as a standalone telemetry sensor with Duplex/Hott/S.Bus2 telemetry
support. Alternatively, the sensor can be directly connected to the Input port „A“ of the controller (see the
picture above). From this moment on, the FALCON controller will know the basic motor parameters (minimum
acceleration, recommended timing, gear ratio, number of poles…) and motor temperature as well.
Some
parameters are adjusted automatically (gear ratio, poles), the other settings are configured after resetting the
controller to factory defaults.
Connect the motor-identification sensor into the
IN-A
port of the controller.
A
CTIVE FREEWHEELING
“
Active freewheeling
”
or
“A
ctive braking
” is a feature of the speed controller that reduces heat generated by the
ESC during partial load operation. This mode is useful for aerobatic pilots who want not only fast acceleration,
but also rapid deceleration. The motor follows throttle stick input in both ways and the pilot feels more
“locked
-
in”.
C
URRENT LIMITER
The current limiter is a part of safety controller features.
It doesn’t stop the motor but rather continuously
monitors the immediate current consumption and adjusts the motor power. You can enable this feature, specify
the maximum allowed current and the ESC will reduce the motor power immediately as soon as the current
threshold is exceeded. After the current returns back to the safe level, the motor power is restored.
B
ATTERY PROTECTION
The integrated battery protection is based on undervoltage detection and reducing motor power, alternatively
shutting down the motor completely. You are free to set the number of cells (or leave automatic detection) and
low voltage threshold per cell. Supported battery types are NiXX (1.2V), LiFe (3.6V max) and LiIo/LiPo (4.2V
max).
Summary of Contents for FALCON-120
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