FUTABA CGY750 Manuel utilisateur
1M23N24902
INSTRUCTION MANUAL
TABLE OF CONTENTS
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TABLE OF CONTENTS
Meaning of Special Markings
DANGER - Procedures which may lead to
dangerous conditions and cause death/serious
injury if not carried out properly.
WARNING - Procedures which may lead to a
dangerous condition or cause death or serious
injury to the user if not carried out properly, or
procedures where the probability of superficial
injury or physical damage is high.
CAUTION - Procedures where the possibility
of serious injury to the user is small, but there is
a danger of injury, or physical damage, if not car-
ried out properly.
: Prohibited : Mandatory
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113
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Gyro
: Instructions for gyro functions
Governor
: Instructions for governor function
Technical updates and additional programming
examples can be found at:
www.futaba-rc.com/faq
3
PRECAUTIONS
PRECAUTIONS
WARNING
Failure to follow these safety precautions may
result in severe injury to yourself and others.
s2EADTHROUGHTHE ENTIRE MANUALBEFOREOPERAT-
ing this product.
BEFORE EACH FLIGHT:
Always check the transmitter and receiver bat-
tery voltage to ensure they have enough remain-
ing capacity to complete the flight.
Always exit programming mode before at-
tempting to fly the model.
Only use the CGY750 with a 2.4GHz system
such as the Futaba FASST™ system, or a PCM
system. Use with an FM system is strongly dis-
couraged since interference can cause serious
operational problems.
Gyro operating precautions:
Gyro
The CGY750 requires 5-10 seconds to ini-
tialize when the power is turned on. Do not
move the helicopter and do not move the tail
rotor, aileron and elevator sticks during this
initialization or the gyro may not initialize
properly. Once the initialization process has
been completed the swash servos and tail
servo will move several times indicating that
the CGY750 is now ready for flight.
Verify that the gyros are operating and com-
pensating in the correct direction before each
flight. If the compensation direction is incorrect
on any axis the model will become incontrollable
after take off.
Verify that the gyro is operating in the desired
mode.
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PRECAUTIONS
Verify that the gyro mounting pads are in good
condition.
Verify that the gyro wires are not contacting
the frame of the helicopter.
The servo type parameters within the CGY750
must match the type of servo you are using. In-
correct setting may damage the CGY750 or the
servos, possibly resulting in a loss of control dur-
ing flight.
Always ensure that there is some slack in
the gyro cables to help maximize performance.
Always use the supplied gyro mounting pads to
attach the gyro to the helicopter mechanics. Do
not use a strap that encompasses the CGY750
sensor. This may affect the overall performance of
the gyro.
Always allow the gyro to adjust to the sur-
rounding environmental temperature before flight.
A large temperature change during use will cause
drift and other operational issues.
The gyro sensor and control box have a elec-
troconductive coating. Do not allow any power
leads or other wiring to come into contact with
these items.
If you are switching between Normal Mode
and AVCS Mode in flight, please keep in mind
that you must have the gyro re-learn the center
position after making a trim change within the
transmitter. To memorize the new center position
simply flip the gain switch on the transmitter three
times between Normal Mode and AVCS Mode
(NormaltAVCStNormaltAVCS) within one
second. The servo will center indicating that the
new center position has been memorized.
When operating the gyro in AVCS Mode, all
compensation and revolution mixing must be dis-
5
PRECAUTIONS
abled and any tail rotor or swash offsets for flight
modes must be disabled.
When the CGY750 is operated in AVCS mode
the tail rotor or swash servos will not center when
tail rotor, aileron or rudder stick is released. This
is normal operation for AVCS mode. The servos
may also move to the extent while the model is
being carried out to the flight line. Before take off,
you must visually center the tail rotor pitch slider
and level the swash plate by using the transmitter
control sticks. You can also center the servos by
moving the tail rotor stick full left, then full right,
back to full left and then allow the stick to center
within one second; similarly for aileron and eleva-
tor servos.
Do not drop the CGY750 sensor onto a hard
surface or subject the CGY750 sensor to a strong
shock as this may damage the sensor.
Always use the supplied mounting pads or
the Futaba replacement mounting pads available
from your local hobby dealer.
Governor operating precautions:
Governor
When the throttle servo is connected to the
CGY750 the battery failsafe function within the
CGY750 must be setup and enabled.
Throttle fail safe function (transmitter setting):
Use the fail safe function for the channel that
turns the governor on and off to set the fail safe
position to the point at which the governor is
turned off. With this setting, when the system en-
ters the fail safe state, the governor will be turned
off and the receiver throttle signal (fail safe posi-
tion preset) will be output directly.
When using the condition hold function on the
6
PRECAUTIONS
7
transmitter, always set the throttle servo maxi-
mum operating point to less than the point at
which the governor is activated. If this is not done
the governor may activate while in condition hold.
While preparing for flight or starting the engine
always ensure the throttle remains below the gov-
ernor activation point and do not select any flight
modes that may activate the governor.
If you prefer to activate the governor while the
model is still on the ground always ensure that
you have at least -5 degrees of pitch in the model
before activating the governor. This is necessary
to prevent an unexpected lift off as the governor
activates and the head speed increases to the
DESIRED20-
0ERIODICALLY CHECK THE 20- SENSOR OUTPUT TO
ensure proper governor operation. Due to the
high level of vibration and centrifugal forces the
magnet may come loose or the sensor alignment
may change. Verify that the magnet and sensor
are properly mounted every 10th flight.
WARRANTY & REPAIR SERVICE (IN U.S.A.)
www.futaba-rc.com or www.hobbyservices.com
Fax (217)-398-7721,Tel (217) 398-0007
s3YMPTOMSINCLUDINGWHENTHEPROBLEMOCCURRED
s3YSTEM4RANSMITTER2ECEIVER3ERVOSANDMODEL
numbers)
s-ODEL-ODELNAME
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s9OUR.AME!DDRESSAND4ELEPHONENUMBER
Futaba Service Center
3002 N Apollo Drive Suite 1
Champaign, IL 61822
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INTRODUCTION
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