Futaba GYA431 - Manual

 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 GYA431 (When shared
with the receiver).
• GYA431 initialization and neutral position reading. The GYA431 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.
 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 concrete surface or other hard floor.
• The sensor may become damaged during strong impacts.
 Do not use trims or mixing in AVCS mode.
• In the AVCS mode all corrections are made by the gyro. Therefore, if trimming and
mixing, are turned on, operation will be the same as deviating from the neutral po-
sition.
 Do not use the GYA431 for applications other than RC air-
planes.
•This gyro is designed for RC airplanes only. Do not use it for other applications.
Features of GYA431 Set Contents
Connection
S.BUS 3-axes Connection Example
S.BUS Connection
Mounting to the Chassis
Name and Function of Each Part
S.BUS connection makes the wiring extremely simple.
The GYA430 and GYA431 can be connected by one
3-way hub. The aileron, elevator, and rudder servos
are output from the gyro. Servos other than S.BUS ser-
vos can also be used. When an R6303SB is used the CH
switching mode is set to group 7. The normal group 7
CH outputs are CH3, CH11, and CH12. CH3 is the throt-
tle channel and CH11 and CH12 are spare channels.
The transmitter function settings are shown below. A
total of 9 channels are used with three axes gyro con-
trol.
Function GYA431
(aileron)
GYA431
(elevator)
GYA430
(rudder)
Aileron CH1
Elevator CH2
Rudder CH4
2nd aileron CH6
2nd elevator CH9
Gyro sensitivity
(aileron) CH5
Gyro sensitivity
(elevator) CH7
Gyro sensitivity
(rudder) CH8
● Dedicated airplane setting
Stabilizes flight, even with hard-to-control scale models.
● Compatible with aileron or elevator control
The GYA431 can be used even with airplanes with one servo each at the left
and right wings.(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 GYA431.
● Integrated type, compact size and light weight
High-density mounting technology makes the GYA431 compact (20.5 x 20.5 x
11 mm) and lightweight (3.5 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 GYA431.
I
NSTRUCTION
M
ANUAL
I
NSTRUCTION
M
ANUAL
● Trimmer (LIMIT/
GAIN)(Digital/
A n a l o g s e r v o
function)
● LED
● Aileron/Elevator
selector switch
● Port 1 (S.BUS input/
Aileron and elevator
input)
● Port 2 (2nd aileron or 2nd
elevator/Gyro sensitivity input)
● Port 3 (Aileron/Elevator servo output)
● Gyro direction
switch
＜ GYA431 aileron mounting ＞
The turning direction which fixes the gyro can be any
direction up to 360° relative to the roll axis.
LIMIT GAIN
Function Aileron mode Elevator mode
Aileron CH1
Elevator CH2
2nd aileron CH6
2nd elevator CH9
Gyro sensitivity (Aileron) CH5
Gyro sensitivity (Elevator) CH7
At S.BUS/S.BUS2 operation, the channels are fixed as shown in the
table below. Match the transmitter channels to these. GYA431 Ratings:
(Integrated sensor type rate gyro)
• Gyro sensor: MEMS vibrating structure gyro
• Operating voltage: DC4.0V to 8.4V
• Current drain: 30mA (excluding a servo)
• Operating temperature range: -10ºC to +45ºC
• Dimensions: 20.5 x 20.5 x 11.0mm (except protrusion)
• Weight: 3.5g
• Functions: (1) Gyro sensitivity trimmer, (2) Monitor LED, (3) Two servos
compatibility, (4) S. BUS/S.BUS2 compatibility, (5) Digital / analog servo
function
Monitor LED display
Operation status Color Display Remarks
1. No servo pulse /
sensor error
Red 4 flash
2. Start of initialization Green Fast blink
3. End of initialization
Red/Green/
Orange
Steady
light
Digital Analog
AVCS Red Red
Normal Orange Green
4. Turn Red/Green Fast blink Right (Green)
Left (Red)
5. Neutral deviation Orange Slow blink When stick operated
6. Gyro sensitivity zero － OFF
7. Switch switching Green One blink Each switching
8. Low battery Red One flash When power drops to 3.8V
or less
The following items are supplied with the GYA431:
GYA431
Mini screwdriver
Extension cord: (Black)
Extension cord: (Red) Sensor tape
Magic strap (for clamping the wiring)
Rudder control
(GYA430)
Aileron control
Elevator control Servo Mode
1M23N27402
• 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 occur after installation.
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.
Thank you for purchasing the GYA431 airplane gyro. Compact and
lightweight, the GYA431 is designed to control the ailerons (roll axis) or
elevators (pitch axis). Features include simple set-up and S.BUS/S.BUS2
connectivity.
The gyro is very sensitive to vibration. Securely mount it with the included double-sided sponge tape at a position where vibration is
minimal and the gyro is perpendicular to the axis to be controlled. Since double-sided tape will not stick to balsa, make a smooth sur-
face by cementing a smooth plastic sheet. to the frame and securely attach the gyro with double-sided tape. Provide a surplus in the
wiring and bundle the wiring with the included magic strap so that it will not interfere with the rod.