Lemon RX Stabilizer PLUS Receiver – Essential Instructions v.1.5
7
Setting Failsafe
No-pulse failsafe: By default, the receiver will, on loss of signal,
stop sending pulses to the servos and ESC.
This should cause the ESC to cut power to the motor, while the servos stay where last commanded. This
achieves the basic failsafe requirement for most electric models – stopping the motor – although the ESC
may take three or four seconds to respond.
Pre-set Failsafe is also available. Using this, the stabilizer will, on loss of signal, go to previously chosen pre-
set positions on all channels. Pre-set Failsafe has the advantage of operating more quickly, especially
important in cutting power to the motor.
To enable Pre-set Failsafe:
1. With receiver and transmitter powered down, insert a bind plug in the Bind/channel 7 slot.
2. Power up the receiver. Indicator 2 lights should be flashing rapidly to signal Bind Mode.
3. Power up the transmitter in Bind Mode (see instructions for your transmitter).
4. Allow the bind process to complete, until Indicator 1 lights (Green/Blue) have stopped flashing and
Indicator 2 lights are signaling the current stabilization mode. This may take up to 20 seconds or more.
5. Move the relevant transmitter sticks and switches to the desired failsafe positions.
6. Press the stabilizer button briefly (<1s) and release. Indicator 1 Green light ON shows failsafe is set.
7. Remove the bind plug and power cycle the unit.
The failsafe settings will be retained even when the stabilizer is powered off.
To cancel Pre-set Failsafe settings, repeat the above procedure and again press the button briefly.
Always test failsafe by switching the transmitter OFF (with propeller removed or the model restrained).
Flying
The following assumes that the stabilizer is mounted upright in a trainer-type model with Autolevel
available. For use in other types of model, see the section “Setting up the StabilizerPLUS in more Advanced
Models” on page 9.
Preparing for the First Flight
Always remove the propeller or disconnect the motor before working with the battery plugged in.
1. With the receiver already bound, power up first the transmitter and then the receiver.
2. Wait for the receiver to complete its initialization (up to 20 seconds).
3. With the stabilizer mode set to OFF (Indicator 2: Red and Green ON solid), verify that all control
surfaces travel in their correct directions when the transmitter sticks are moved. If necessary, change
the relevant Reverse settings in the transmitter. At this time check that all control surfaces are centered.
Note: If using a Transmitter with two-position Gear switch, skip step 4 or step 5, as appropriate.
Note that loss of power is quite different from loss of signal (out of range) although the results may seem similar.
IC (fuel powered) models must use correctly set up Pre-set Failsafe to shut down the engine on loss of signal.
If the BLUE light comes on, you have held the button too long and selected Always-ON. Press the button again for
more than 1 second to cancel this, then to set failsafe, press briefly (<1s) while holding the desired control inputs.
The general rule is transmitter FIRST ON, LAST OFF.