ROBBE HeliCommand 3A Manual De Instrucciones página 17

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Connections
All modern radio control systems include helicopter mixers which ensure that
the servos move as required, for example, the superimposed servo move-
ments required for a three-point swashplate linkage.
However, when the HeliCommand is used, the mixing must be carried out
using the unit's integral mixer. For this reason please select an unmixed heli-
copter program ("H1" / single servo) at your transmitter, so that only one servo
moves when you move any transmitter stick in any single plane. Once this is
the case, you can start connecting the system. If you are not sure how to set up
the radio control system, please ask the transmitter manufacturer. Alternatively
- if a throttle curve is not required - select a standard (base) program instead of
a helicopter program. This also guarantees that the signals from the auxiliary
channel sliders and switches are also transferred without any mixing.
Attention: if using an H4 swashplate linkage, the PC adaptor is necessary.
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Setting up
When you have installed the system, or made changes at the transmitter, the
HeliCommand must be set up (only once) to match the model and transmitter,
unless you wish to leave everything at the default settings: e.g. Robbe-Futaba
transmitter, Spirit LI model helicopter, or a similar type with the same servo
directions and with round side of HeliCommand facing to the right.
Important: it is essential to check the sensors and the control directions
before fl ying the model for the fi rst time (page 28)!
Optional set-up facilities:
a) Using the SET button: as described below, for (almost) all swashplate
types up to 3 servos.
b) Using the PC adaptor: in this case only steps A to D-step1 are required.
Then see the set-up software, begin with reading the data from HeliCom-
mand. This is necessary if you are using an H4 swashplate linkage (or pos-
sibly some rare types of swashplate linkage).
Electric-powered helicopter
Be sure to disconnect the drive motor or motors to prevent them bursting into
life accidentally; alternatively connect the receiver to a separate battery!
A) Factory reset
This resets the unit to the factory default state; it erases all settings, including
those which are only accessible using the PC adaptor. Switch on the HeliCom-
mand with the SET button pressed in, then hold the button pressed in a second
time for at least fi ve seconds until the LED fl ashes
B) Setting up the transmitter
All swashplate mixer functions must be switched off permanently. Set the ele-
vator and aileron travels at the transmitter to around 100%. Values for Expo
can be set. Transmitters with 1.6 ms norm (Multiplex) must be set to the UNI
mode (1.5 ms). If the integral heading-hold gyro is used, all tail rotor mixers
must be switched off at the transmitter.
C) Calibrating (learning) the transmitter neutral points
• Set the transmitter sticks to neutral, collective pitch to minimum, trims to
neutral, or - if you have already test-fl own the helicopter using the
HeliCommand and only small trim values are set - leave the trims where set.
• Hold the SET button pressed in for one second until the LED glows green,
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• The RC module (with cable distributor) supplied in the set must be
• You must connect at least the aileron, elevator and collective pitch inputs to
• The PILOT and AUX connections are optional. Connect these cables to the
• The HeliCommand switches itself on when you switch the receiver on.
• Unused input cables can be stowed away by turning them through 180° and
• Cover the vacant socket on the HeliCommand with adhesive tape to prevent
The calibration process can be repeated at any time. The HeliCommand now
"knows" the signals which correspond to the "neutral and stationary" command.
For this reason the calibration must always be repeated if you move the trans-
mitter trims substantially. The trim itself is not infl uenced by the calibration pro-
cess. For this reason please leave the trims alone once the unit has "learned"
the settings; you will only need to correct them if you make changes to the unit's
internal mixer. When using the auto-trim option , the transmitter's trims must
never be used; you can just leave the elevator and aileron trims at neutral.
D) Confi guring the HeliCommand
The helicopter's mechanical systems (neutral position of swashplate and tail
rotor) must be adjusted at least approximately. The calibration process can
only work properly if the input cables and servos are correctly connected, and
if any mixer functions at the transmitter are completely disabled. If in doubt,
connect any servo directly to receiver in order to insure that each channel only
responds to one stick function and to fi nd the proper channel of each function.
Reconnect again. You should now simply run through the following steps:
Calling up the set-up mode
Calibrate the transmitter neutral setting (see above „C"), but holding the SET
button pressed in for at least three seconds until the LED fl ashes green. This
simultaneously erases the internal auto-trim values. The servos will now not run,
or will run differently to normal, according to the stage of the set-up procedure.
red-green alternating.
Setting up and storing for each step (1-5)
This is carried out using the stick actions described below,combined with a long
press on the SET button.
Changing the set-up step
The current step (1 - 5) is indicated by the number of fl ashes. When you call up set-
up mode, step 1 appears fi rst. Press the SET button briefl y to move on to the next
step without changing the setting; this also takes you back from step 5 to step 1. You
can repeat the settings as often as you like using this method. However, for the initi-
al set-up procedure please run through all the steps in turn, as described below.
Close set-up mode
This is possible at any time simply by switching the system off.
connected between the receiver and the servos.
It can be attached to the receiver using Velcro or double-sided tape.
the receiver.
receiver output sockets to which the associated transmitter controls (sliders
or switches) of your RC system are assigned.
connecting them to unused sockets on the receiver or the RC module.
soiling.
then release it again and switch off. Job done. (If the LED becomes red: p. 8)
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