FUTABA GY701 Manual de usuario
1M23N23902
GYRO QUICK START
INTRODUCTION
2
The Futaba®GY701 is a heading hold AVCS gyro
and head speed governor in one box. Its cutting-edge
MEMS (Micro Electro Mechanical System) sensor
design, ultra high-speed processing and advanced
PID control algorithm put it a quantum leap ahead
of all other heading hold gyros in size, weight and
performance. The GY701 has been optimized for
model helicopter competition.
Please read through this guide completely before
flying the GY701.You must also read the instruction
manual in its entirety (including all of the precautions
and safety warnings). The goal of this quick start
guide is to get you up and flying with the GY701 in
a minimum number of steps. It is also recommended
that you find the optimum settings using the gyro
mode only. Once you have found the optimum
settings and are satisfied with the flight performance,
please refer to the GY701 instruction manual to
begin governor setup. This quick start guide also
assumes that you are familiar with your transmitter
and programming functions.
The information within this manual will provide a
heading hold 3D setup that is mild overall. If you
feel any changes are necessary, please refer to the
GY701 instruction manual.
If you want to setup Normal Mode only (non
heading hold), then please refer to the GY701
Instruction Manual.
MODEL PREPARATION
3
Prepare your model by installing the servos, receiver
and power system. Leave the servo arm off of the tail
rotor servo and do not connect the tail rotor servo
to the GY701 until you have completed the setup
later in this guide. Once the correct tail rotor servo
type has been selected, the servo can be connected
to the control box.
GYRO SENSOR INSTALLATION
The gyro sensor should be mounted on a rigid
platform, at least 6 in [152mm] away from a Nitro
Engine. It is not necessary to mount the gyro near the
main shaft of the helicopter, but it is very important
that the mounting area chosen is rigid. Please refer
to your helicopter manufacturer’s instructions for
recommended mounting locations.
Installing the gyro sensor
When mounting the gyro in a larger electric or .50
through .91 size nitro helicopter, we recommend
using one 2mm Mounting Pad.
2mm Mounting Pad
Gyro Mount
Gyro Sensor
TROUBLESHOOTING
If you experience erratic gyro operation (drifting,
not holding well or inconsistent pirouette rate),
please follow the troubleshooting tips listed below.
1. Always verify that your model’s tail rotor
control and drive system are working correctly.
GYRO SENSOR INSTALLATION
4
2. Electromagnetic interference could affect the
gyro or tail rotor servo. Mount the gyro in a
different location, away from the electronic
speed control, servos and drive motor.
3. The trouble may be caused by vibration.
Verify that your helicopter’s components are
balanced. If problems persist, try mounting
the gyro in a different location.
TAIL ROTOR SERVO INSTALLATION & SETUP
Follow your transmitter instructions and program
the transmitter as follows:
❑Enable the gyro function within the transmitter.
❑Set the gyro mode to AVCS (GY) within the
transmitter.
❑Set the remote gyro gain to 70% AVCS in the
transmitter for the Normal and Hold flight
conditions. Use 60% AVCS for all idle up
conditions. See “Setting The Gain” section in
the instruction manual for more details.
❑Set the Tail Rotor ATV/EPAto 100% for both
left and right.
❑Set D/R to 75% for both left and right. This
will reduce the maximum pirouette rate. Make
adjustments to these values once the initial test
flight has been completed.
❑It is recommended that you run 30%
softening expo on the tail rotor channel
within the transmitter.
ｎWARNING ｌDo not connect the tail rotor servo to
the gyro until the servo type has been selected. Operating
the servo using the incorrect setting may damage the
GY701 or the servo.
5
CONTROL BOX INSTALLATION
(1) Gyro:
1
2
3
Gyro
sConnect
the
gyro
sensor.
*Insert the sensor
connector until it is
firmly locked.
Receiver
(2) Rin/SB:
sS.BUS receiver: Connect to the S.BUS out-
put of the receiver.
sOther than S.BUS receiver: Connect to the
rudder channel output. Gyro
(3) Gain: Gyro
sConnect to the gyro gain channel output.
Find a suitable location for the GY701 control box
and mount it using double sided tape. Connect the
gyro sensor to the [Gyro Rsen] connector on the
control box and ensure the clip is firmly engaged.
Connect the supplied extensions to the GY701
connecter. Route the wires through the helicopter
mechanics and connect them to the appropriate
receiver channels. If you are using a standard
receiver, then the only two connections needed
are Receiver Tail Rotor Channel ➞GY701 [Rin]
connection and Receiver Gain Channel ➞GY701
[Gain] connection. To determine the appropriate
receiver channels, please check your transmitter’s
instruction manual.
If using a Futaba S.Bus receiver, then only one
extension is needed between the S.Bus Receiver
connection and the GY701 [SB] connection. If
any other information is needed please see the
“S.Bus Basic Setting” section of the GY701
Instruction Manual.
CONTROL BOX INSTALLATION
6
Using wire mounts, wiring fixtures molded into
the helicopter, or hook and loop material, route the
extensions to the receiver. Ensure that the extensions
leading to the receiver cannot become entangled in
rotating components and make sure the extensions
are not rubbing against metal or carbon fiber which
may damage the wires. Once the power system is
installed and connected, please move onto the next
step to learn how to program the gyro.
GY701 BASIC SETUP
Turn your transmitter on and allow it to initialize.
Switch the helicopter on and allow the GY701 to
initialize. During the initialization of the gyro, the
screen will show an animated helicopter. Once the
screen changes to show status, the initialization
is complete.
MENU STRUCTURE
7
Push DATA
+/– key Push MODE
+/– key
Push MODE +/– key
for 1 second
Max. revolution
Home
screen Engine runtime
OLED display mode
LED display mode
Operation mode
Gyro Basic Gyro Expert
Governor Expert
S.Bus Basic
Governor Basic
From the home screen the mode [+] and [–] button
will take you through the various status screens for
the gyro or governor. It also displays basic options.
MENU STRUCTURE
8
From the home screen the data [+] and [–] button
will navigate the upper menus which include the
Home screen, Gyro Basic, Governor Basic and S.Bus
Basic menus. Once the menu you would like to enter
is selected (for example Gyro Basic), simply press
the mode [+] or [–] button to navigate the options.
Once you have found the option you would like
to change simply press the data [+] or [–] button.
Please take a few minutes to become accustomed
to navigating the interface.
To select an Expert menu (for example Gyro Expert
or Governor Expert) simply press either mode [+]
or [–] button and continue to hold for one second.
If you have performed this correctly the screen will
change to either Gyro Expert or Governor Expert.
Feel free to navigate the various menus and change
options since we will be completely resetting the
gyro and governor before beginning setup. Please
review the menu structure listed to become familiar
with the options available.
GY701 SETUP
Once you are done navigating the menus and have
become accustomed to the user interface it is time
to reset the gyro and governor. Cycle the receiver
power and allow the gyro to initialize. Press the data
[+] button until Gyro Basic is shown on the display.
Press and hold the mode [+] button for one second
to enter Gyro Expert Mode. Once the screen shows
Gyro Expert, press the mode [–] button until “Data
Reset?” is shown. Next press the data [+] button and
the display will change to show “Exec.??”. The gyro
is asking you for confirmation before resetting the
gyro. Press the data [+] button again and the gyro will
GY701 SETUP
9
be reset to the defaults and the screen will change to
“Exec.—“ to confirm that the gyro has been reset.
Cycle the receiver power and allow the gyro to
initialize.To disable the governor, press the mode [+]
button until “Opr.Mode Gyro+Gov” is shown. Press
the data [+] button until the screen shows “Opr.Mode
Gyro”.This indicates that the gyro only is operating
and the governor has been disabled. Press the mode
[+] button until the home screen is shown again.
Press the data [+] button until “Gyro Basic” is shown.
Press the mode [+] button to scroll through the menu
options until “ServoType” is displayed on the screen.
Press the mode [+] button until the proper servo type
has been selected.
Servo type [default: DG:1520]
Selection of the servo type to be used. The
servo type is changed to Digital 1520tDigital
760tAnalog by pushing data [+] or [–] key.
DG 760: BLS251, S9256, S9251
DG 1520: BLS254, BLS257, S9254, S9257
Push MODE
+/– key
MENU STRUCTURE
10
WARNING
The servo type parameter must match the
type of servo you are using. Incorrect setting
may damage the GY701 or the servo, possibly
resulting in a loss of control during flight.
Turn the receiver and transmitter power off for now.
TAIL ROTOR SERVO INSTALLATION
❑Install the tail rotor servo into the mechanics
and connect the servo to the gyro. Remove the
servo arm screw from the servo.Turn the receiver
power on and allow the gyro to initialize. Enter the
“Gyro Basic Setting” mode and go to parameter
(4) “Servo Limit Point Setting”. While in the
servo limit setting the servo will remain centered.
90°
❑Place an appropriate servo arm onto the servo
and ensure that it is perpendicular to the tail rotor
pushrod as shown. Remove the unused sides of
the servo arm.
❑Install the control ball supplied with your
helicopter onto the servo arm. For larger electric
models or nitro powered models we recommend
placing the ball 13.25mm from center. Once the
control ball has been installed, place the arm back
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