Futaba GY701 User Manual

1M23N23906INSTRUCTION MANUAL

FEATURES10• Gyro section• Advanced and adaptive PID operation is utilized• Small and low profile gyro sensor. 2 colors LED are installed on the top su

CONTENTSYour GY701 includes the following components:Type of sets'YRO'OVERNORSETW",3s'YRO'OVERNORSETs'OV

CONTENTSGY701 Control AmpMounting Pads2mm Thick (three)Adjustment ScrewdriverGyro SensorMagnetDust CoverGovernor Sensor12

CONTENTSExtensions:Extension (Black)Extension (Red)Ei(RdSENSORTHRO MXTRr.p.m 1 r.p.m 2 r.p.m 3m.trim GOV on GOV offon / offTxGV-1& SxSENS.r.p.m TH

SPECIFICATIONS Width (Controller): 1.14in [29mm] (Gyro sensor): 0.83in [21mm] (Speed sensor): 0.30in [7.5mm] Length (Controller): 1.73in [44mm]

RECOMMENDED SERVOS.91 Size Helicopters &UTABA3$IGITAL3ERVO(ELIFUTM0224  (Z3 &UTABA3$IGITAL(I3PEEDFUTM0226 

CONNECTING THE GY701 TO YOUR RECEIVEROLED Displays$ISPLAYS THESETDATA ANDoperation status.Edit Keyss5SEDWHENSETTINGDATAs/PERATEDBYPUSHIN

CONNECTING THE GY701 TO YOUR RECEIVER17(1) Gyro: Gyros#ONNECTTHEGYROSENSOR*Insert the sensor connector until it is firmly locked.(2) Rsen: Governo

CONNECTING THE GY701 TO YOUR RECEIVERConnect the supplied extensions to the GY701 connecter. Route the wires through the helicopter mechanics and conn

LED INDICATOR DESCRIPTION Slow Flash: 1/2 Second or longer Fast Flash: 1/4 Second or shorter LED IndicatorCONDITION LED INDICATOR DESCRIPTIONInitia

TABLE OF CONTENTS • Precautions ----------------------------------3 • Warranty and Repair Service (in U.S.A.) --8• Introduction ----------------------

MECHANICS PREPARATIONSｎWARNING ｊNewer high end servos and other radio equipment are capable of placing large de-mands on the power systems in use tod

MECHANICS PREPARATIONSs6IBRATION WILL AFFECTTHE '9S OVERALL PERFOR-mance. All rotating components on the helicop-ter should be balance

OPENING SCREEN22The GY701 starts the initializing process when powered up. After it is finished initializing, the GY701 starts initializing and moves

HOME SCREEN23After finishing the initialization sequence, OLED changes the display to Home screen. There are 3 kinds of the Home screen related by the

HOME SCREEN243. Gyro working mode GyroThis indicates the gyro working mode is either AVCS or Normal mode. The inverse “A“ character is dis-played when

HOME SCREEN255. on/off switch GovernorThis shows the switch condition of the governor. The governor is active when ”On” displayed.6. Yaw rate comp. Go

HOME SCREEN26when the engine stop. The revolution mode can be selected either during main rotor revolution or engine revolution. The rpm character sta

HOME SCREEN27the data + or – key for more than one second.2. Engine runtime GovernorThis displays the engine runtime integration. The dis-play is chan

HOME SCREEN285. Operation mode [default: Gyro+Gov]This sets the operation mode of the GY701. Set to “Governor” when the gyro sensor is not used and se

WARNING DISPLAY29Input error GyroThis indicates no rudder or throttle signal input. The GY701 does not work in this condition.Sensor error GyroThe gyr

TABLE OF CONTENTS Meaning of Special Markings Pay special attention to safety where indicated by the following marks: ｎDANGER - Procedures which may l

EDIT SCREEN30The edit mode is changed to Gyro basic, Gover-nor basic, or S.Bus basic mode by pushing the data+ or- key. These modes set the basic oper

EDIT SCREEN31Push DATA+/– keyPush MODE+/– keyPush MODE +/– keyfor 1 secondMax. revolutionHomescreenEngine runtimeOLED display modeLED display modeOper

GYRO BASIC SETTING32This sets the gyro’s fundamental functions. The menu (4) Servo limit point setting should be set first.(1) Start displayThe editin

GYRO BASIC SETTING33(4) Limit setting [default: 100%, setting range: 50∼150%]Adjusting the maximum servo throw. Set the amount to limit the rudder thr

GYRO SENSOR INSTALLATIONTROUBLESHOOTING If you experience erratic gyro operation (drifting, not holding well or inconsistent pirouette rate), please f

TAIL ROTOR SERVO INSTALLATION AND SETUPFollowing your transmitter instructions, pro-gram your transmitter as follows: Enable the gyro function within

TAIL ROTOR SERVO INSTALLATION AND SETUP Install the tail rotor servo into the mechanics and connect the servo to the gyro. Remove the servo arm screw

TAIL ROTOR SERVO INSTALLATION AND SETUP Follow the instructions within the “Servo Limit Point Setting” section and set the servo limits for the tail r

BEFORE FLIGHT CHECKLIST Transmitter and Receiver batteries are fully charged. The gyro mounting pads are in good condi-tion. The gyro wiring has som

ADJUSTMENTS DURING THE TEST FLIGHTｎWARNING ｊAlways make small (1%) adjustments to the tail ROTOR$2OR %0! ONCETHEVALUE EXCEEDSOver 100%

PRECAUTIONS ｎWARNING Failure to follow these safety precautions may result in severe injury to yourself and others. s2EADTHROUGHTHEENTIREMANUALB

ADJUSTMENTS DURING THE TEST FLIGHTThe tail rotor ratio, tail rotor pitch range and tail blade length play a large part in achieving opti-mum tail roto

USING NORMAL MODEMost pilots today are using AVCS Mode. If you are just starting out, it is recommended that you use AVCS Mode exclusively from the st

SETTING THE GAINMost modern computer transmitters will have a gyro function built into them. If this is the case, please refer to your transmitter’s i

SETTING THE GAINIf your transmitter does not have a Gyro func-tion built in then it will be necessary to use the ATV or EPA function to control the ga

GOVERNOR BASIC SETTING44This sets the governor’s fundamental functions. The menu (9) Servo limit point setting must be set first.(1) Start displayThe e

GOVERNOR BASIC SETTING45(3) Gear ratio [default: 8.00, range: 3∼30]Input the main rotor gear ratio by pushing the data + or-key.Notes:s)FTHEGEARRA

GOVERNOR BASIC SETTING46(5) Stick switch [default: 30%]The governor can be activated by throttle stick position. Move the throttle stick to the ON PO

GOVERNOR BASIC SETTING47(Governor operating point)Set speedSet point or more and 60% of set speeds4HROTTLESTICKSETTOLEASTTHESETPOINTFROMSLOW

GOVERNOR BASIC SETTING48(6) Governor on/off switch [default: Inhibit]It selects the governor activate switch if addi-TIONALSWITCHISUSED0USHINGTH

GOVERNOR BASIC SETTING49(7) Battery failsafe setting [default: Inhibit]The governor goes into the failsafe mode WHEN THE BATTERY VOLTAGEISBELOW

PRECAUTIONSｊVerify that the gyro is operating in the desired mode. ｊVerify that the gyro mounting pads are in good condition. ｊVerify that the gyro wi

GOVERNOR BASIC SETTING50(9) Servo limit point settingIt sets the throttle servo maximum throw. It is fundamental for governor operation. It must be se

GOVERNOR BASIC SETTING51(11) Revolution sensor testingIt tests the output level of the revolution sensor. Turn the engine by hand, and check the outpu

MOUNTING THE MAGNET AND SENSOR52Modify the cooling fan and install the accessory magnet and attach the magnetic sensor to the en-gine at the position

MOUNTING THE MAGNET AND SENSOR53Cooling fan modification Drill a hole in the fan at the magnet mount-ing position. Make the hole about 4.1mm in diamete

MOUNTING THE MAGNET AND SENSOR54between the sensor and magnet can be made 1 to 2mm. Tighten the sensor stay together with the engine mounting flange. (

MOUNTING THE MAGNET AND SENSOR55 The center of the sensor is different from the center of the sensor case so be careful when mounting the sensor. If

FUSELAGE SETTING PRECAUTIONS56Throttle servo linkage precautionsTo effectively use the governor, observe the fol-lowing precautions when connecting th

FUSELAGE SETTING PRECAUTIONS57different from that with a normal muffler. Adjust the needle (and pipe length) so that engine speed changes are proportio

GOVERNOR OPERATION58Governor operationThe GY701 operates from 1000 to 3000rpm main rotor speed. However, the engine must be running at the set speed.

GOVERNOR OPERATION59has changed.Deviation from set speed:The GY701 stabilizes the engine speed to within +1% of the set speed. For example, if the rot

PRECAUTIONS ｊWhen operating the gyro in AVCS Mode, all tail rotor compensation and revolution mixing must be disabled and any tail rotor offsets for fl

GOVERNOR SPEED SETTING60The GY701 is used by connecting the “rpm” input to the governor speed setting channel of your sys-tem. When using an independe

GOVERNOR SPEED SETTING61GOVERNORTOs4HEMAXIMUMSPEEDCANBEVERIlEDATTHE-!8speed display, however this could show some un-locked main rot

S.BUS BASIC SETTING62This sets the function of the channel of the S.Bus connection. It is required with the use of the S.Bus compatible receiver. The

S.BUS BASIC SETTING63(2) S.Bus setting: Rudder channel [default: 4ch]Push data + or – key to match the transmitter rudder channel.(3) S.Bus setting: G

S.BUS BASIC SETTING64(6) S.Bus setting: GOV. on/off channel [de-fault: 8ch]Push data + or – key to match the transmitter governor on/off channel.(7) S

GYRO EXPERT SETTING65This sets the detail of the gyro function for the ex-pert modeler. Push the mode + or – key for more than one second on the Gyro

GYRO EXPERT SETTING66(4) Rudder exponentialdefault: -60% (F3C-AVCS), -40% (F3C-Normal), -20% (3D-AVCS), -20% (3D-Normal)ranges: -100%∼+100%This sets

GYRO EXPERT SETTING67(7) Control delay Outdefault: F3C=10, 3D=12ranges: 0∼20This sets the rudder control delay of moving to neutral from right or left

GYRO EXPERT SETTING68(10) Pirouette speeddefault: 450 deg/sec (F3C), 720 deg/sec (3D)ranges: 100∼999 deg/secThis adjusts the pirouette speed of the ru

GYRO EXPERT SETTING69Decreasing this value may stop tail hunting if it is taking place at hovering to idle up. Pushing data+ or – key, the value is ch

PRECAUTIONS7ｊWhen using the condition hold function, trans-mitter’s function), always set the throttle servo maximum operating point to less than the

GYRO EXPERT SETTING70Separate the pitch signal in the transmitter, and in-put this signal to the GY701. To do that, make the programmable mixing as pi

GYRO EXPERT SETTING71This setting must be done when F/F mixing is used.(19) Pitch low settingdefault: 1940 uSThis sets the minimum pitch point of GY70

GYRO EXPERT SETTING72key, the mode is changed.(22) Neutral compensationdefault: ON (F3C), Off (3D)This function works to recall the neutral point of t

GYRO EXPERT SETTING73(25) Gyro data resetIt resets the gyro parameter to the default setting. The “Exec.??” is displayed by pushing data + or – key fo

GOVERNOR EXPERT SETTING74This sets the details of the governor function for the expert modeler. Push the mode + or – key for more than one second on t

GOVERNOR EXPERT SETTING75(3) Revolution display modedefault: RotorThis selects the revolution display mode for either the main rotor or engine revolut

GOVERNOR EXPERT SETTING76(6) Throttle data modedefault: OptimizeThis selects the throttle input operation. Pushing data+ or – key, the mode is changed

GOVERNOR EXPERT SETTING77This sets the delay of the revolution from high to low. Pushing data+ or – key, the value is changed.(9) Start delaydefault: 

GOVERNOR EXPERT SETTING78This resets the governor parameter to default set-ting. The “Exec.??” is displayed by pushing data + or – key for confirmation

WARRANTY & REPAIR SERVICE (IN U.S.A.) If any difficulties are encountered while setting up or operating your GY701, please consult the instruction

INTRODUCTION9FEATURES • Combined Gyro and Governor in one box. Indi-vidual either Gyro or Governor working mode are supported.• The fastest operation