Futaba GYA441 Bedienungsanleitung

Futaba Funksteuerung GYA441

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Features of GYA441 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 GYA440 and GYA441 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 GYA441

(aileron)

GYA441

(elevator)

GYA440

(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

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● Compatible with aileron or elevator control

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● Remote gain function

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● Integrated type, compact size and light weight

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● Easy setup

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● Supporting the S.BUS/S.BUS2 connection

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Rate Gyro for Airplanes

Aileron or Elevator use

INSTRUCTION MANUAL

For RC models

●Trimmer

(LIMIT/GAIN)

(Digital/Analog

servo 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

Aileron(Elevator)

servo

※Only S.BUS is compatible with 1 servo.

Extension cord: (Black)

Accessory connector (Red)

GYA441

To port 3

To port 1

Aileron/Elevator CH

Gyro sensitivity CH

To port 2

Receiver

Gyro gain CH(Receiver)←connect→Port2(GYA441)

Remote gain eﬀective. Trimmer(GYA441) becomes LIMIT.

Gyro gain CH(Receiver)←It does not connect→Port2(GYA441)

Remote gain is invalid. Trimmer(GYA441) becomes GAIN.

S.BUS Receiver

Aileron (Elevator) servo

2nd servo

Extension cord: (Black)

GYA441

To port 3

To port 2

When there is 1

servo, port 2 is not

connected.

To port 1

S.BUS/S.BUS2 port

Controlled axis (roll axis)

90°

Gyro

Degrease and stick

Flat surface of the fuselage to which

double-sided tape easily sticks

(double-sided tape does not stick to balsa)

Sensor tape

Rudder servo

Elevator servo

GYA440(Sold separately)

GYA441

Aileron servo

S.BUS/S.BUS2 port

S.BUS Receiver

This is a three axes

connection example. The

rudder uses a GYA440 and

the receiver is an R6303SB.

＜ GYA441 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.

GYA441 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: 3.7g

• 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

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GYA441

Mini screwdriver

Extension cord: (Black)

Extension cord: (Red)

Sensor tape

Magic strap (for clamping the wiring)

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-

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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 GYA441 (When shared with the re-

ceiver).

• GYA441 initialization and neutral position reading. The GYA441 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.

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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 GYA441 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-

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tional issues.

Rudder control

(GYA440)

Aileron control

Elevator control

Servo

Mode

1M23N30802

• 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.

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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.

AVCS 100%

NORMAL 100%NORMAL 50%

LIMIT

GAIN

AVCS 50%

Servo

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Gyro Sensitivity and AVCS Switching

AVCS / NORMAL Modes

Servo Operation on the Ground

Link the servo in accordance with the kit instruction manual.

Adjust the linkage rod so that the trim amount is as small as pos-

sible.

Digital/Analog servo selection

Selection of an analog and digital servo is performed in a limit

trimmer's setting position.

A limit trimmer's motion is as follows.

Digital servo → A trimmer is adjusted by the Right rotation from

the middle point.

Analog servo → A trimmer is adjusted by the Left rotation from

the middle point.

The amount of limits -- the halfway point -- the minimum -- it will

become the maximum quantity if it is made to rotate to Max, re-

spectively. The check of operational mode is discriminable in the

display color of LED. The stability of digital-servo mode of a ﬂight

increases in order to perform a high-speed control action.

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Adjust the gyro sensitivity at the transmitter.

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Use the aileron/elevator selector switch to select aileron or

elevator. (Aileron: AIL Elevator: ELE)

Turn on your transmitter's power. Set the gyro sensitivity to about

50% at the normal side (minus rate side) in accordance with the

transmitter instruction manual. 50% of normal sensitivity will be -70%

at the rate of the sensitivity CH so that a next graph may be seen and

understood.

Turn on the receiver power. When the gyro starts the LED ﬂashes

green and initialization begins. When initialization ends the

servo performs reciprocating operation to the left and right (a little).

Adjust the transmitter and gyro while repeatedly taking oﬀ and

landing and with the aircraft on the ground.

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because it is dangerous.

1Fly the aircraft and trim it by turning oﬀ the gyro at 0% sensitivity

or in the NORMAL mode. After trimming, switch the gain switch

between 0% sensitivity (or NORMAL mode) and the AVCS mode three

times at an interval of within one second and then set the gain switch

to the AVCS mode position. This memorizes the AVCS mode neutral

trim position at the gyro. In the AVCS mode, do not perform trimming

during ﬂight.

2Adjust the gyro sensitivity so that hunting (deflection of the

aircraft in small increments) does not occur in the control axis

direction. The gyro sensitivity is different depending on the area of

the aircraft rudder, air speed, and gyro used. Initially try changing

the sensitivity in 5% steps. If hunting is excessive, the aircraft may be

damaged. Hunting tends to stop when the airspeed is lowered.

The gyro has two operation modes: NORMAL mode and AVCS

mode. In the AVCS mode, angle control is performed at the same

time as NORMAL mode rate (rotating speed) control. In the AVCS

mode, the neutral keeping force is stronger than the NORMAL

mode and the flight attitude of the aircraft is forcefully main-

tained. During knife-edge flying, idiosyncrasies of the aircraft

when climbing will be compensated automatically. On the other

hand since the rudder follows when the aircraft stalls, pay spe-

cial attention to the elevator axis. To be safe, switching to the

NORMAL mode when taking oﬀ and landing is recommended.

If the stick is moved when the airplane is on the ground, the ser-

vo will move to the limit position. In the AVCS mode, the servo

will not return to the neutral position even if the stick is set to

the neutral position, but this is normal.

If the stick is moved fully to the left or right three or more times

within one second, the servo will temporarily return to the neu-

tral position.

When the remote gain function is used normally and AVCS

mode switching is performed in accordance with the direction

of operation of the transmitter s remote gain channel. At the +

rate side, the AVCS mode is selected and at the ‒ rate side, the

NORMAL mode is selected. The sensitivity is changed by adjust-

ing the end point rate. If the transmitter has a gyro sensitivity

setting mixing function, the sensitivity setting is performed di-

rectly.

When the remote gain function is not used, the clockwise di-

rection from the center of the sensitivity setting trimmer is the

AVCS mode (not used) and the counterclockwise direction is the

NORMAL mode. At the center position, the sensitivity becomes

zero. When the trimmer is turned fully to the left or right, the

sensitivity becomes 100%.

The sensitivity setting criteria by end point is shown in the

ﬁgure below. The sensitivity becomes zero between end point

-40% to +40% and becomes 100% at end point 100%.

Refer to the transmitter instruction manual and set the end

point. When AVCS is used, setting the 3-positions switch to the

sensitivity CH (there are types which cannot be set by transmit-

ter) and setting it as shown above is recommended. In the case

of a 2-positions switch, inhibiting the gyro at 0% sensitivity such

as NORMAL mode and sensitivity 0% and AVCS mode and 0%

sensitivity is safe.

Trimmer movement when the

remote gain function is not used

(when S.BUS is not used and port

2 is not connected) . Please do not

use AVCS, when you do not use re-

mote gain. Because, neutral memo-

ry cannot be performed. And taking

oﬀ and landing being dangerous.

-40%

+40%

50%

100%

+70% +100%

-70%-100%

End point rate

Gain

NORMAL side（LED : GREEN）

AVCS side（LED : RED）

GAIN 0％

AVCS

NORMAL

When AVCS is used we

recommend that the

sensitivity CH be set to

the 3-position.

AVCS 100%

NORMAL 100%NORMAL 50%

LIMIT

GAIN

AVCS 50%

Tilt the airplane to the left on

the ground and check that the

ailerons operate to the right. (In

the case of aileron control)

Tilt the airplane to the

left on the ground and

check that the ailerons

operate to the right.

(In the case of aileron

control)

AVCS

When GYA441 used at the ailerons of a shoulder wing aircraft

NORMAL

Left rudder applied

When tilted by left aileron

Flies tilted to the left as long as

right aileron is not applied.

The airplane itself is stable and tries

to return to level ﬂight.

When tilted by left aileron

Left rudder applied

Aileron direction is forcefully

maintained level.

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Aircraft gradually tilts to the left.

<2nd servo operating direction>

During aileron mode operation

the 2nd aileron servo

moves in the

same direction as the

aileron servo. In the elevator

mode, the 2nd elevator servo

moves in the opposite direc-

tion of the elevator servo.

Mount the servos as left and

right objective linkage.

＜Limit trimmer Adjustments＞

It adjusts to the

maximum operation of

linkage.

（Aileron）

Aileron stick right

/left to full

D/R (UP side)

LIMIT

GAIN

Limit trimmer

Adjustments

Digital

Analog

In the case of aileron control, switch the gyro direction switch and

adjust the direction of operation of the gyro so that the ailerons

move all the way to the right when the airplane is tilted to the left.

In the case of elevator control, switch the gyro direction switch and

adjust the direction of operation of the gyro so that the elevator servo

moves in the down direction when the airplane is moved in the up

direction. If the direction of operation of the gyro is incorrect, ﬂight

will become impossible so make the settings positively.

Gyro sensitivity zero --- LED OFF

AVCS side --- LED red

NORMAL side --- LED green

LIMIT

GAIN

NORMAL 30%

＜A gain trimmer's work ＞ First,we recommend to

start with NORMAL30%.

＜GAIN CH ＞

LIMIT

GAIN

Digital-servo mode:

LED Orange

Analog-servo mode:

LED Green

Limit position

of digital servo

Limit position

of analog servo

[Limit position]

Selection of digital/analog servo

is chosen towards a trimmer turning.

LIMIT

GAIN

70%

100%

130%

When a remote gain function is oﬀ, it becomes only analog servo

mode. A trimmer becomes only for gain.

(Digital-servo use is possible)

*When you use an analog servo, please be sure to set to ana-

log servo mode. If it sets to digital-servo mode and it is op-

erated, there is a danger that a servo will be destroyed.

This places the gyro into the ready state. During initialization secure

the fuselage so that it will not move and fix the transmitter stick

at the neutral position. Initialization takes about 3-5 seconds after

the receiver operates. After initialization the LED lights green. If the

neutral position has changed, the LED will light orange. In this case,

restart the gyro. Move the stick and check that the servo operates.

Move the stick to the maximum left and right and adjust the gyro

limit trimmer so that the servo operating angle is at the

maximum position at which there is no interference with the linkage.

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Adjust the gyro sensitivity with the GYA441 trimmer.

Do not use the AVCS mode.

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*In this case, 2 gain setup with a transmitter and 4 limit adjustment

of diﬀering in a procedure are lost. And as shown in a ﬁgure, gain is

adjusted of the trimmer of GYA441.

● Trimmer operation

*Make trimmer adjust-

ments gently by using the

included mini screwdriver.

Produktspezifikationen

Marke:	Futaba
Kategorie:	Funksteuerung
Modell:	GYA441

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