FUTABA GYA450 Instruction Manual

1M23N34802
Rate Gyro for Airplanes
Elevator or Rudder use
I M
I M
NSTRUCTION ANUAL
NSTRUCTION ANUAL
For RC models
Before using your new gyro, please read this manual thoroughly and use the
gyro properly and safely. After reading this manual, store it in a safe place.
• No part of this manual may be reproduced in any form without prior permission.
• The contents of this manual are subject to change without prior notice.
• Futaba is not liable for any potential damage (accidental or otherwise) that may oc-
cur after installation.
Features of GYA450 Features of GYA450
● Dedicated airplane setting
Stabilizes flight, even with hard-to-control scale models.
● Compatible with elevator or rudder control
(Corresponds to 2 elevators and 2 rudders for S.BUS/S.BUS2 connection)
The GYA450 can choose and use an elevators or a rudder.
● Compatible with Alevon or V-tail wing
Two axes control is available with two of the GYA450 or GYA451 when using a
combined connection. (S.BUS only)
● Remote gain function
The remote gain function allows the sensitivity of the gyro to be adjusted from the
transmitter and the mode switching function allows AVCS/NORMAL gyro mode
switching. Also the gain can be adjusted by the trimmer on the GYA450.
● Easy to mount, compact size, and lightweight
High-density mounting technology makes the GYA450 compact (20.5 x 20.5 x 11
mm) and lightweight (3.7 g).
● Easy setup
Basic settings let you be flight-ready in an instant.
● Supporting the S.BUS/S.BUS2 connection
Only one wire connection to the receiver can operate the GYA450.
● This gyro is equipped with a sensor with excellent vibration resis-
tance.
This gyro can also be used with large combustion engine powered models.
Name and Function of Each Part Name and Function of Each Part
●Elevator/Rudder ●Port 3 (Elevator/Rudder servo output)
selector switch ●Port 2 (Gyro sensitivity input)
●Gyro direction ●Port 1 (S.BUS input/Elevator/
switch Rudder servo input)
●Trimmer (Limit/GAIN)
(Digital / Analog servo
function)
●LED
Monitor LED display
Operation status Color Display Remarks
1. No servo pulse /
Red 3 flash
sensor error
2. Start of initialization Green Fast blink
Servo
Digital
Red/ Mode
Steady
3. End of initialization Green/ AVCS Red
light
Orange
Normal Orange
Red/ Right / Up (Green)
Fast blink
4. Turn
Green Left / Down (Red)
5. Neutral deviation Orange Slow blink When stick operated
6. Gyro sensitivity zero － OFF
Green One blink
7. Switch switching Each switching
When power drops to 3.8V
8 Red One flash
. Low Battery
or less
Thank you for purchasing the GYA450 airplane gyro. Compact
and lightweight, the GYA450 is designed to control the elevators
(pitch axis) or rudder (yaw axis). Features include simple set-up
and S.BUS/S.BUS2 connectivity.
GYA450 Ratings:
(Integrated sensor type rate gyro)
• Gyro sensor: MEMS vibrating structure gyro
• Operating voltage: DC 4.0 V to 8.4V
• Current drain: 30 mA (excluding a servo)
• Operating temperature range: -10ºC to +45ºC
• Dimensions: 20.5 x 20.5 x 11.0 mm (except protrusion)
• Weight: 3.7 g
• Functions: (1) Gyro sensitivity trimmer, (2) Monitor LED, (3) CH change
elevator or rudder, (4) S.BUS/S.BUS2 compatibility, (5) Digital/Analog
servo function
Set Contents Set Contents
The following items are supplied with the GYA450:
Mini screwdriver
GYA450
Extension cord: (Black)
Extension cord: (Red)
Sensor tape
WARNING
Failure to follow these safety precautions may result in severe injury
to yourself and others.
Check that there is sufficient transmitter battery capacity for flight.
• Determine the operating time of the receiver, gyro, and servo battery in the adjust-
ment stage and decide the number of flights with a margin to spare.
Analog servos cannot be used while in "digital servo" mode.
• Analog servos may break down if "digital servo" mode is selected.
Do not operate the airplane and transmitter sticks for about 3-5
seconds after turning on the GYA450 (When shared with the re-
ceiver).
• GYA450 initialization and neutral position reading. The GYA450 is initialized when
the power is turned on. In the AVCS mode, the neutral position is also read at the
same time. If initialization ends normally, the operator is informed by two repetitive
movements of the servo to the left and right (a little).
Always check the direction of operation of the gyro.
• Attempting to fly with the operating direction reversed is extremely dangerous. Al-
ways check your gyro's direction to ensure safe flights.
Do not strike the gyro with a hard object. Do not drop it onto a con-
crete surface or other hard floor.
• The sensor may become damaged during strong impacts.
Do not use trims or mixing in AVCS mode.
Analog
• In the AVCS mode all corrections are made by the gyro. Therefore, if trimming and
Red mixing, are turned on, operation will be the same as deviating from the neutral po-
sition.
Green
Do not use the GYA450 for applications other than RC airplanes.
• This gyro is designed for RC airplanes only. Do not use it for other applications.
Do not place gyro near heating equipment (engine, motor, ESC,
battery, servo, etc.).
• Always allow the gyro to adjust to the surrounding environmental temperature be-
fore flight. A large temperature change during use will cause drift and other opera-
tional issues.
Connection Connection
Extension cord: (Black)
To port 3
To port 1
Elevator /Rudder CH
To port 2
Receiver
GYA450
Gyro sensitivity CH
Elevator(Rudder)
Accessory connector (Red)
servo
Gyro gain CH(Receiver)←connect→Port2(GYA450)
Remote gain effective. Trimmer(GYA450) becomes LIMIT.
Gyro gain CH(Receiver)←It does not connect→Port2(GYA450)
Remote gain is invalid. Trimmer(GYA450) becomes GAIN.
S.BUS Elevon 2-axes Connection Example S.BUS Elevon 2-axes Connection Example
To port 3
Roll axis To port 2
To port 1
Extension cord: (Black)
Aileron servo
GYA451
S.BUS Receiver
To port 2
To port 3
Elevator servo
S.BUS/S.BUS2 port
GYA450
Pitch axis
● In case of the Elevon operation, using the GYA451 for aileron control and
GYA450 for elevator control. Set aileron mode to the GYA451 and elevator
mode to the GYA450.
● Turn off the Elevon mixing on the transmitter. The gyro generates the
Elevon mixing itself. Select the transmitter model type to 1AIL and normal
tail.
● It will not allow to use the Sub-Trim function on the transmitter. Correct the
aileron and elevator control surface to be flat by the mechanical linkage
setting. When the aileron Sub-Trim moves, both aileron and elevator servo
are moved at the same time.
● The power to the gyros must be supplied at the same time. It may happen
the malfunction of recognizing the correct operation mode.
S.BUS 3-axes connection S.BUS 3-axes connection
To port 3
To port 2
To port 1
Aileron servo
Extension cord: (Black)
GYA451
2nd Aileron servo
To port 3
To port 2
To port 1
S.BUS Receiver
Elevator servo
GYA450 or GYA451
2nd Elevator servo
S.BUS/S.BUS2 port
To port 3
To port 2
To port 1
Rudder servo
GYA450
2nd Rudder servo
S.BUS Connection S.BUS Connection
Extension cord: (Black)
To port 3
To port 1
To port 2
S.BUS Receiver
S.BUS/S.BUS2 port
GYA450 Elevator
(Rudder) servo 2nd servo
Function Elevator Mode Rudder Mode
Elevator CH2 At S.BUS/S.BUS2 operation,
Rudder CH4 the channels are fixed as
shown in the table below.
2nd Elevator CH9
M a t c h t h e t r a n s m i t t e r
2nd Rudder CH10
channels to these.
Gyro Gain（Elevator） CH7
Gyro Gain（Rudder） CH8
S.BUS V-Tail 2-axes connection Example S.BUS V-Tail 2-axes connection Example
To port 3
To port 2
To port 1
Yaw axis
Rudder servo
GYA450
Extension cord: (Black)
To port 2
S.BUS Receiver
To port 3
Elevator servo
S.BUS/S.BUS2 port
GYA450 or GYA451
Pitch axis
● In case of the V-tail operation, using the GYA451 or GYA450 for elevator
control and GYA450 for rudder control. Set elevator mode to the GYA451 or
GYA450 and rudder mode to the GYA450.
● Turn off the V-tail mixing on the transmitter. The gyro generates the V-tail
mixing itself. Select the transmitter model type to normal tail.
● It will not allow to use the Sub-Trim function on the transmitter. Correct the
elevator and rudder control surface to be flat by the mechanical linkage
setting. When the elevator Sub-Trim moves, both elevator and rudder servo
are moved at the same time.
● The power to the gyros must be supplied at the same time. It may happen
the malfunction of recognizing the correct operation mode.
S.BUS connection makes the wiring extremely simple.
The GYA450 and GYA451 can be connected by one
3-way hub. The aileron, elevator and rudder servos are
output from the gyro. Servos other than S.BUS servos
also can be used.
The example shows dual aileron, elevator and rudder
operation. The transmitter function setting are shown
below. A total 10 channels are used with 3 axes gyro
control. The model type are set to 2AIL+AILVATOR. 2nd
rudder is set to CH10.
Function
GYA451(Aileron) GYA450 (Elevator) GYA450 (Rudder)
Aileron CH1
Elevator CH2
Rudder
2nd Aileron CH6
2nd Elevator CH9
CH10
2nd Rudder
Aileron Gain CH5
Elevator Gain CH7
Rudder Gain
CH4
CH8