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FUTABA GY501, Instruction Manual

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FUTABA GY501 Instruction Manual Download Page 19

20

B

EFORE

 U

SE

When Using a Transmitter ATV Function

The ATV function lets operator perform a gain adjustment at each CH5
switch position.

[GY501 Settings]

Select the gyro operation mode at the GY501 Mode screen. (AVC, NOR,
or CMT)

[Transmitter Settings]

ATV function:
Set the ATV rates at the transmitter CH5 ATV function.

[Sensitivity Display]

The gain display indicates the actual gain at the GY501 G:1 and G:2
screen.
The following shows the relationship between transmitter and gyro setting
when GY501 sensitivity setting is 100% in both the G1 and G2 gain
modes.

- Relationship between transmitter and gyro setting

Transmitter

settings

GY501mode

settings

Actual gain

ATV rates

NOR

AVC

CMT

CH5 Switch      CH5 Switch

Forward side      Front side

90%        -        0%        -        90%

Normal mode   Normal mode

AVCS mode   AVCS mode

Normal mode   AVCS mode

(G2)             (G1)

100%       -       0%       -       100%

Summary of Contents for GY501

Page 1: ...1M23N04302 AVCS GYRO GY501 INSTRUCTION MANUAL YAW AXIS STABILIZER FOR MODEL HELICOPTER RATE GYRO...

Page 2: ...AVCS GYRO GY501 INSTRUCTION MANUAL YAW AXIS STABILIZER FOR MODEL HELICOPTER RATE GYRO...

Page 3: ...erse flight aerobatics and demand various flight positions so that controlling the position of the tail has become more difficult The GY501 gyro uses the Futaba AVCS system and makes it possible to th...

Page 4: ...USE Set Contents 11 Name and Function of Each Part 12 Description of GY501 Operation 13 ASSEMBLY AND ADJUSTMENT Connections 29 Mounting the Gyro Sensor 30 Use 31 DATA SETTING LCD Display and Edit Keys...

Page 5: ...ition and cause death or serious injury to the user if not carried out properly Procedures which may lead to a dangerous condition or cause death or serious injury to the user if not carried out prope...

Page 6: ...een Do not move the helicopter until this message disappears in about 5 seconds Also do not move the transmitter rudder stick from the neutral position during this period Precautions When Turning on t...

Page 7: ...exposed to direct sunlight or is mounted near the engine the temperature may change suddenly Take suitable mea sures so that the gyro is not exposed to direct sunlight etc Operating Precautions At li...

Page 8: ...ting time during the adjustment stage and decide how many flights are remaining Never use the transmitter rudder trim in the AVCS mode When the rudder is trimmed during flight the neutral position wil...

Page 9: ...has a considerable effect on the fuselage vibration level or the size type linkage method looseness etc of the tail rotor Since a higher gain than usual can be used then the tail rotor is more effect...

Page 10: ...tents After unpacking the GY501 set first check if the following parts are provided BEFORE USE Accessories Servo horn mounting parts S9205 servo x1 Only a set w servo Sensor tape x3 Mini screwdriver x...

Page 11: ...adjusted with the accessory mini screwdriver Receiver connectors Remote gain input Rudder input Edit keys Used when setting data Operated by pushing with the accessory mini screwdriver Input output te...

Page 12: ...operator perform AVCS mode and Normal mode sensitivity adjustment and operation mode switching from the transmitter The channel used here is called the remote gain channel Channel 5 is used Remote Gai...

Page 13: ...n Gyro Sense Mixing function 1 Select the Dual Mode DUO at the transmitter Gyro Sense Mixing setup screen 2 Set the GAIN1 and GAIN2 gains The following page shows a setting example in the CMT mode Sen...

Page 14: ...ch condition The following shows a setting example in the CMT mode Select the Dual Mode DUO Sensitivity rate Choose the GAIN1 or GAIN2 by the CH5 switch Use the following values as the sensitivity set...

Page 15: ...etup screen Programmable Mixing function 1 Select the ACTIVE mode ACT at the transmitter Programmable Mixing setup screen 2 Set the mixing type to OFS 3 Set the slave channel to GYR 4 Set the sensitiv...

Page 16: ...70 40 Setting Example Adjust the gyro gain at the Programmable Mixing setup screen at each condition The following shows a setting example in the CMT mode Select the ACTIVE Select the GYR Select the O...

Page 17: ...switch for the sensitivity selection 3 Set the NORM IDL1 and IDL2 gains The following page shows a setting example in the CMT mode Sensitivity Display The gain display indicates the actual gain at the...

Page 18: ...example in the CMT mode Select the ON mode Select the Idle Up switch Switch position Sensitivity rate Set the NORM IDL1 and IDL2 gains at each setup screen Use the following values as the sensitivity...

Page 19: ...ction Sensitivity Display The gain display indicates the actual gain at the GY501 G 1 and G 2 screen The following shows the relationship between transmitter and gyro setting when GY501 sensitivity se...

Page 20: ...gyro operation mode at the GY501 Mode screen AVC NOR or CMT Gyro Gain Adjustment function Set the G 1 and G 2 gains at the GY501 G x screen Relationship between transmitter and gyro setting Transmitte...

Page 21: ...function correction and initializes itself During initialization the message INIT appears on the GY501 LCD screen Do not move the helicopter until this message disappears in about 5 seconds Also do no...

Page 22: ...the Normal mode and the AVCS mode the GY501 reads the rudder signal at the point at which it was switched from the Normal mode to the AVCS mode as the neutral reference point Therefore when switching...

Page 23: ...e rudder neutral position is memorized inside the GY501 When the rudder neutral position was changed by the linkage the rudder neutral position in the AVCS mode must always be re read before use Re re...

Page 24: ...ifts When the tail drifts the gyro detects the tail rotation angular velocity and operates the servo in the direction that stops the tail from moving Drifting of the tail is stopped by control from th...

Page 25: ...o original position operation added to the AVCS system improves rudder trim operation In other words the gyro can automatically trim the rudder against side winds This also applies to reverse flight W...

Page 26: ...The AVCS system uses a different rudder control method As described in the preceding section it has additional functions that attempt to return movement by external force to the original position and...

Page 27: ...g in the Normal mode to take the rudder linkage neutral position This centers the linkage At this time this rudder neutral reference point is read to the GY501 Giving the gyro the rudder neutral refer...

Page 28: ...GYRO Connections Rudder Servo SX Rudder Channel RX 1 4 Remote Gain Input RX AUX Connect to receiver sensitivity setting channel normally ch5 Connector Connection Insert the connectors fully and firmly...

Page 29: ...and firmly stick the sensor to a flatpartofthehelicopterframesothatitdoesnottouchtheframe Mount the sensor so that the bottom of the sensor is level with the rotatingsurfaceofthetail Always use the at...

Page 30: ...al mode only set to Nor To use the GY501 in the AVCS mode only set to AVC When switching between the AVCS mode and Normal mode set to CMT When using the GY501 in the CMT mode the AVCS and Normal mode...

Page 31: ...g flight 1 The GY501 sensitivity becomes 0 at 50 When set over 50 the GY501 operates in the AVCS mode and when set under 50 the GY501 operates in the Normal mode When setting is changed 1 the gyro sen...

Page 32: ...thin 1 second between AVCS and Normal at least three times is displayed on the LCD screen to show that data is being memorized During this operation never move the transmitter rudder stick from the ne...

Page 33: ...the AVCSandNormalmodes adjustusingtheGY501ruddercontrol linkage Adjustment method When the rudder effect in the AVCS is different from the rudder effect in the Normal mode after adjustment was perfor...

Page 34: ...possible Since the gyro gain also has a large effect on the stopping state make this adjustment after adjusting the sensitivity 8 When you want to use rudder mixing in the Normal mode set the transmit...

Page 35: ...poperation andchargetheNicdbattery Edit keys Setup screen call The setup screens can be sequen tially called with the FUNC or FUNC key For the order in which the setup screens are called see the funct...

Page 36: ...ower ON Initial screen at power on P38 Power supply voltage display P38 Gyro Gain Adjustment P39 Gyro Reverse P39 Rudder Control Gain P40 Control Delay P40 Gain Tracking P41 Servo Frame Rate P41 Opera...

Page 37: ...poweristurnedon INIT blinksforabout 5secondstoreadthereferencedata Duringthisperiod donotmove thetransmitterrudderstickorthehelicopter Ifthetransmitterrudder stickorhelicopterismovedbymistake therudde...

Page 38: ...yindicatestheactualgain andchangeswithtransmitter remotegainadjustment Gyro Reverse Initial value NOR Sets the direction of operation of the gyro Displaysthereceiverpowersupplyvoltage Whenthevoltagedr...

Page 39: ...ick Thegainofthe setdirectioncanbeset Thissettingisusedintrackingtherudder operationsensitivitybetweentheAVCSandNormalmodes The settingrangeis30 to200 Control Delay Initial value 0 Setstheruddersticko...

Page 40: ...nting orrightturnpirouettestoppingdrifts shiftTrkinthe direction Inthereversecase shiftTrkinthe direction If Trk is large a left and right pirouette speed difference will be produced Therefore adjustg...

Page 41: ...e AVC mode the GY501 always operates in the AVCS mode In the CMT mode theGY501canbeusedinboththeAVCSandNormal modes Linkage Limit Setting Initial value 100 Setstherudderservotravellimit Thelinkagelimi...

Page 42: ...liquidcrystaldisplay Operating voltage range DC 3 8V to 6 0V Currentdrain 60mA 4 8V includingsensor Operatingtemperaturerange 10to 50degreeC Operatinghumidityrange 10to90 RH nocondensation Dimensions...

Page 43: ...yro sense mixing H High High side frame rate 1 2 side I IDLE Transmitter power OFF state p38 INH Use inhibited state INIT Initialize Initialization p38 L LCD Liquid crystal display screen LmtA B Linka...

Page 44: ...200 NCGB 100 30 200 CD1A 0 0 100 CD1B 0 0 100 0 20 20 NOR NOR High CMT CMT NOR AVC LmtA 100 LmtB 100 Copy and use GY501 Parameters Sheet Parameter value value Remarks Helicopter Date Initial Set Gyro...

Page 45: ...d Proof of Purchase For Warranty Claims Pleasereadthewarrantycardsuppliedwithyoursystem Whenrequestingwarranty pleasesendthecardalongwithsome typeofdatedproofofpurchase Ifyouhaveanyquestionsregardingt...

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