Operation Manual

Instructions
Seite 25
ENGLISH
!
Note
If you wish to connect devices (servos, speed control-
lers, ...) designed for different signal formats, you can
change this parameter separately for each channel in
the menu K Servo/Assignment ( Î 16.2.).
 TIP:
In the same menu you can also change the assignment
of the receiver outputs if necessary (in sequence and/or
function).
Step
q
Switch on transmitter and receiver
!
Note the correct sequence when switching on!
Always switch on the transmitter first,
and only then the receiver.
!
Caution!
Injury hazard: power systems may burst into
life!
In principle you can now control your model, but in fact
you need to set up the various values to suit the model
in question.
Step
r
Calibrating the servos
Please work with the greatest care when calibrating.
Your model will only respond accurately to the con-
trols if the servos are correctly calibrated.
The servos are calibrated in the menu
K Servo, Calibrate ( Î 16.1.).

TIP:
A 2-point servo calibration is sufficient for the throttle,
collective pitch and tail rotor servos. Before calibrating
the servos, remember to check that they rotate in the
correct direction; if you have to reverse a servo, you will
then need to re-calibrate it! For calibrating the two ref-
erence points P1 and P5 use the Assign button, which
moves the servo to the correct position (and keeps it
there) regardless of the position of the associated
transmitter control (Î 16.1.2). Adjust the percentage
values so that the servos move to the maximum travels
required, but do not strike their mechanical end-stops
(servo stalled) at either extreme of travel.
A 3-point servo calibration is required for the Roll and
Pitch-axis servos. Once again, do check that the servos
rotate in the correct direction before carrying out the
calibration; if you have to reverse a servo, you will then
need to re-calibrate it!
For the servos Head f/b, Head l, Head r and (if present)
Head 4 (CCPM swashplate) a more accurate calibration
can be carried out by using a 5-point servo calibration.
You can set the number of reference points in the menu
* Servo, Calibration(-> 16.1). Check that the servos are
working in the correct “sense” (direction) before you
start the calibration process; you can do this by moving
the collective pitch stick up and down. Use the assign
button for calibrating the individual reference points P1
... P5: all the rotor head servos will run to the appropri-
ate position (and stay there) regardless of the position
of the associated transmitter controls. You can now
adjust the percentage values until the swashplate re-
mains exactly horizontal at every reference point, with-
out being mechanically obstructed (stalled) at the ex-
treme points P1 and P5.
Step
s
Setting up the rotor head mixer
(models with CCPM rotor head only)
The mixer is set up in the menu G Mixer, Rotor head (Î
15.5.). The model template HELIccpm assumes the use
of a 3-point 120° swashplate with the “pitch-axis servo”
mounted at the rear, as seen from the tail. The values for
the parameters Geometry, Rotation and Lever are set in
accordance with this default set-up. If your model fea-
tures a different type of swashplate control system, you
will need to alter these values to suit.
The control travels can now be adjusted in the menu H
Control ( Î 14.2.4. Aileron Trvl, Pitch axis Trvl)
Step
t
Setting up the collective pitch curve
The collective pitch curve is set up in the menu H Con-
trol Collect. ( Î 14.2.9.).
A separate collective pitch curve can be set for each
flight phase, so that the collective pitch control system
is an optimum match to each flight phase. For example:
x Hover
Collective pitch range -2 ... +10°: this means that the
model is less sensitive in response at collective
pitch minimum, making it easier to land the heli-
copter under full control.
x Acro
Collective pitch range -10 ... +10°: this means that
the model behaves the same in upright and in-
verted flight.
x Autorot
Collective pitch range -8 ... +12°: this means that the
optimum rotor blade settings for auto-rotation are
available at collective pitch minimum and maxi-
mum.

TIP:
The blade pitch angle for hovering is usually in the
range approx. 4 ... 5°. When you are adjusting the collec-
tive pitch curves it is important to ensure that this value
is achieved at roughly the same position of the collec-
tive pitch stick on all the collective pitch curves you set
up, otherwise the model will “jump” when you switch
from one flight phase to another.
!
Note: Models with CCPM swashplate
The collective pitch curve points P1 and P6 should not
be set to + or - 100%, as this would mean that symmet-
rical cyclic control movements (pitch-axis or roll) would
not be possible at collective pitch maximum and collec-
tive pitch minimum. Depending on the set travels for
roll and pitch-axis we recommend a maximum setting
of approx. 75 ... 80% for P1 and P6.