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Futaba GV-1 Manual

1. Offset the sensor center position Sensor case Align the sensor center position and the center of the magnet shown in the figure at the left Sensor center position sensor mounting position The sensor and stay mounting directions depend on the O Direction of mounting the sensor to the stay Distance from center of engine shaft Cooling fan Magnet mounting position Needle side 27 1 28 8mm Needle side 22 0 24 0mm 2 mounting method E The tables below show the magnet mounting position example for each en gine a 60 engine 30 engine 2 Distance from Distance from gt Mounting center of Mounting center of z position position engine shaft engine shaft z o 0 lt With a Kyosho 60 helicopter do not use a stay Mount the sensor directly to the helicopter frame m 7 8 ATEINASSV Magnet direction check Magnet operating side check S 1 Connect the sensor to 25 eus the control amp T 2 Connect a battery di rectly to one of the servo wrena battery is connected to the servo tors t t is activated connectors connectors the control amp is activate Control amp 3 Press the FUNC or FUNC key until the sensor percentage screen is displayed Sensor connectors 4 Bring the magnet near the end Sensor of the sensor and check the op eratin
2. The gear ratio should be given in the he licopter instruction manual If the helicop ter instruction manual does not give the gear ratio calculate the gear ratio as fol lows Gear ratio N1 N2 Carry values less than 1 1000 to the next whole number Set at control am Three speeds can be set This is standard when the speed is switched by 3 position switch A 2 position switch and a VR channel can also be used 1 Call the speed set up screen with the FUNC or FUNC key When switch used 2 Set the switch to the de sired position and set the speed with the DATA or DATA key 3 points Qoan be set Counter clockwise When VR channel used 2 Set the variable resistor knob to the fully counter clockwise center or fully clockwise position and set the speed with the DATA or DATA key 3 points can be set Clockwise FUNCTIONS 27 SNOILONNA 28 Set the speed of each point by repeating step 2 The set points can be verified at rSx x 1 2 3 of the display screen Note When the speed setting channel travel ATV AFR is made 20 or less points 1 and 3 cannot be set Speed setting points The engine maximum speed range limits the maximum speed setting Test fly the helicopter with the governor turned off and tach the main rotor R P M while in horizonal flight This is the maximum R P M that can be achieved with the engine and pitch setup that you are usi
3. the speed display mode set up screen MAX speed display monitor function Max This function displays the maximum engine speed or rotor speed It can be used to check the engine power However the maximum speed when the throttle stick is 95 or more from the high side is memorized The maximum value is memorized while the power is on Reset method 1 Hold down the DATA or DATA key for at least 2 seconds or turn off the power The display can be switched between engine and rotor with the speed display mode set up screen FUNCTIONS 33 SNOILONNA 34 Speed setting rS1 rS3 The speed can be set for three points Connect the speed setting input AUX r p m to a receiver vacant channel Set value check 1 Operate the switch 3 position or variable resistor knob The set values are displayed on the LCD screen in rS1 gt rS2 gt rS3 slow gt medium gt high order Speed setting method 1 Set the switch or variable resistor knob to the de sired position and set the speed of that point by pressing the DATA key accelerate or DATA key decelerate When not using the speed setting channel set 52 only rS1 and rS3 are disabled When using a 2 position switch set rS1 and rS3 only rS2 is set to the initial value 1500rpm Setting range 1000 2100rpm Initial value rS1 1300rpm rS2 1500rpm rS3 1700rpm Reference If the speed is set to 1000rpm or less the display will chan
4. 2 Set the throttle stick to the maximum slow position and press the DATA or DATA key The Idle display stops flashing and changes to a steady light and the idle point is memorized 3 Set the throttle stick to the full high position and press the DATA or DATA key The High display stops flashing and changes to a steady light and the high point is memorized 4 Set the throttle stick to the engine cut position and press the DATA or DATA key The Stop display stops flashing and changes to a steady light and Setting error display Set the servo travel to ATV50 or more If the servo travel is set to less than 50 ERR will be displayed Increase the servo travel and reset the throttle linkage Note The closer to 100 ATV is the best condition Always set the stop point to a position lower than the idle point If the stop point is set to a position higher than the idle point ERR will be dis played If this occurs set the stop point to a position lower than the idle point and reset the throttle limit Rotor gear ratio setting Rotor gear ratio input 1 Call the rotor gear ratio screen with the FUNC or FUNC KEY 2 Input the gear ratio from the DATA or DATA key The rotor gear ratio can be input in 1 100 steps Rotor Engine main gear 1 pinion gear N2 Speed settin Notes lf the gear ratio is not properly set the set Speed and actual engine speed will be dif ferent
5. GOVERNOR FOR MODEL HELICOPTER GV 1 INSTRUCTION MANUAL Thank you for purchasing a Futaba 1 governor To ensure safe use please read this manual thoroughly before using your new governor After reading this manual store it in a safe place FOREWORD The GV 1 is an engine governor for model helicopters The governor automatically maintains constant rotor R P M due to load changes reaction to torque by suppressing variations in the engine speed The GV 1 works very well in all maneuvers from hovering to flying Engine speed can be set from both the GV 1 and the transmitter A magnetic sensing system reads the engine speed Fuel mixture control can be set An LCD panel displays the engine speed and set data 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 This manual has been carefully written Please contact Futaba if you feel that any cor rections or clarifications should be made to the contents of this manual Futaba is not responsible for the results of use of this product by the customer Governor SV 7 TABLE OF CONTENTS PRECAUTIONS 6 Definition of symbols 6 Setting precautions 7 Operating precautions 9 BEFORE USE 10 Set contents 10 Nomenclature 11 Overview of GV 1 operation 12 Examples 14 ASSEMBLY amp ADJUSTMENT 16 Mounting the magnet and sensor 16 GV 1 connections 21 Fuselage sett
6. MG Mixture rate setting function P40 MIXTURE Fuel mixture MSx Mixture servo reverse P42 MTm Mixture trim P43 MxMD Mixture servo operation mode P39 MXTR Mixture N Norm Normal side off off PCM Pulse code modulation R Rev Reverse side RH Relative humidity rpm r p m Speed revolutions r 1 rS2 rS3 Speed setting position RX Receiver S Sen Rotation sensor monitor P46 SENSOR Sensor Stop Stop point P45 Stsw Governor on off stick operation setting P37 SWOd Governor on off condition P37 SWPt Governor on off switch position Setting P36 SX Servo T THRO THROTTLE Throttle Tst Throttle servo operation test P46 Tx Transmitter V Volt Unit of voltage VR Variable resistor Please copy and use GV 1 PARAMETERS SHEET Helicopter Engine Date Parameter Initial value Set value Remarks Speed 1 rS1 1300rpm rpm Speed 2 rS2 1500rpm rpm Speed 3 rS3 1700rpm rpm Speed display Disp Rotor Rotor gear ratio GRt 9 70 Mixture trim MTrm INH Stick ON OFF mode StSw INH Governor high side off GvoF INH Mixture rate MD1 15 MD2 36 50 MD4 58 MD5 64 MD6 68 MD7 73 MD8 76 9 9 80 Mixture servo reverse MSx norm REFERENCE 39N3H3H3H 50 REPAIR SERVICE Before reguesting repair read this instruction manual again and recheck your system Should the problem continue reguest repair service as follows Describe the proble
7. NH Note When the governor set speed and the engine speed at the point at which the governor is turned off are considerably different the speed variation when the engine speed shifts from the governor off point back to the governor on point will be large Therefore adjust the off point or the set speed so that the governor off point speed and governor set speed are the same Battery voltage display monitor function This function displays the present battery voltage Volt When the battery voltage drops to 3 8V the battery alarm Low Batt flashes Mixture servo operation mode MxMD The mixture servo must operate in proportion to operation of the throttle servo When a governor is used the throttle servo is controlled by the gover nor Therefore the governor must generate the mixture signal The mixture operation mode can be selected When the Gov mixture servo operation mode is selected the mixture servo operates on a 9 point curve set by the governor Set the rate of each point with the mixture rate set up function The Dir mode sets the curve at the transmitter in the governor off state to simplify mixture curve setting It is used by setting the transmitter fuel mix ture control function to ACT The curve data set at the transmitter controls the mixture servo The mixture servo can be operated by copying the mixture curve The AUX m trm connector connects to the mixture channel The set ting of eac
8. ON OFF stick operation set up StSw screen B When using together with speed setting switch When using the mixture trim function and when there is no vacant channel FUNCTIONS 1 Call the speed set up screen with the FUNC or a FUNC key 2 Set the switch to the position to be used as the off position and set the speed to 1000rpm or less with the DATA or DATA key 3 off is displayed and the governor can be turned off at that position 29 When linked with throttle stick When there is no vacant channel 1 Call the governor on off stick op eration set up screen with the FUNC or FUNC key 2 Switch the display from INH to on off with the DATA or DATA key When the stick switch is operated the display switches from off to on and the switching point can be checked 3 When the throttle stick is set 15 or less from the slow side the governor is turned on A Caution Until the start of flight keep the governor in the off state with the throttle stick at 1596 or less from the slow side SNOILONNA This is the engine starting etc mode If the throttle stick is set to the ON position when the engine speeds exceeds 70 of the set speed the governor will be unintentionally turned on Battery fail safe setting A Warning Q Always perform battery fail safe setting at the governor When used the governor controls the throttle Therefore the battery fail safe function
9. SW AW AUX r CH 3 THRO UJ m a GV 1 magnetic sensor XJ c O hg c o m Seal Sensor mounting stay m SENS THRO For 30 engine Cu mirim GOVon GOV off For 60 engine GV 1 on off rpm THRO 9 m trim Sensor mounting screws Miniature screwdriver mmm o o Limm o OOo 10 Nomenclature Control amp LCD display panel Displays the speed and set data Governor _ THROTTLE nen Servo connectors SLU os gi oaa CH 3 THRO Futaba Sensor connector Receiver connectors Edit keys Used to set data Press with the accessory miniature screwdriver 0 2 L ul m 11 LCD contrast trimmer The display contrast can be adjusted so that the LCD display is easy to read Adjust the contrast with the accessory miniature screwdriver Seal SENSOR SENS THRO Tx rpmi rpm2 rpm3 Stick this seal to the sensor and servo connec miim GOVon GOV off tors transmitter switch etc on off rpm THRO m trim Overview of GV 1 operation The 1 operates from 1000 to 2100rpm main rotor speed However the engine must be running at the set speed The GV 1 turns off the governor when the engine is starting or idling Governor operation Operation that stabilizes the engine speed at the set speed When governor turned on and off by switch Normal condi
10. Setting method 1 with the governor in the off state move the throttle stick to the set point At points other than the set point gt or is displayed to indicate the direction of offset from the set point When the set point is reached the rate display changes from flashing to a steady light to show that setting is possible Gov mode Dir mode 2 Set the rate with the 2 Transfer the mixture DATA key increase or curve data of that point DATA key decrease from the transmitter by pressing the DATA or DATA key However to match the mixture curve data with the transmitter curve data as final servo output match the data of the mix ture channel set at the transmitter and the governor side mixture data and servo reverse function Setting range 0 100956 Initial value MD1 15 MD2 36 MD3 50 MD4 58 MD5 64 MD6 68 MD7 73 MD8 76 MD9 80 FUNCTIONS 41 SNOILONN 4 42 Mixture ATV ATV Sets the mixture servo throw Set the operation angle in accordance with the mixture carburetor instruction manual Setting method 1 Operate the throttle stick and se lect ATVA slow side or ATVB high side 2 Set the steering angle by pressing the DATA key increase or DATA key decrease Setting range 10 140 Initial value ATVA100 ATVB100 Mixture servo reverse MSx The direction of operation of the mixture servo can be reversed Set
11. age setting precautions Throttle servo linkage precautions To effectively use the governor observe the following precautions when con necting the servo linkage Make the servo operating range as wide as possible Make the throw of the transmitter ATV function AFR function and func tions as close as possible to 100 The governor will not operate at throws lower than 50 Do not use the throttle curve Operate the throttle linearly Fly with the governor turned OFF and adjust the needle so that the engine smoothly reacts to movement of the transmitter stick If there is a point at which the reaction of the engine is considerably differ ent due to a too rich or too lean mixture the governor may not operate to its maximum potential Fuselage vibration countermeasures If the helicopter frame is weak or the engine mount is deformed or not installed properly the vibrations applied to the engine will increase Engine vibrations will lead to unstable speed and prevent the governor from maximum performance Therefore make sure that the engine is vibration free and that the carburetor is of good liner design because the governor cannot correct engine problems Use of a tuned silencer The use of a tuned pipe type silencer may cause the engine throttle response to be substantially different from that with a normal muffler Adjust the needle and pipe length so that engine speed changes are proportional to the throttle opening I
12. ess from slow side after engine started governor starting only Speed set to 999rpm or less OFF setting Stick signal is lower than stop position setting Engine stopped or sensor signal abnormal Throttle stick set 15 or less from slow side only when function that turns governor on and off by stick is set The following operations do not indicate trouble When engine speed rises above the set speed A near vertical dive may cause the engine speed to rise above the set speed Throttle operation speed and ON OFF point If throttle operation exceeds 70 of the set speed and the rotor speed rises to the set value the ON OFF point may seem to differ with the operating speed Delay operation to smoothen the switch ing operation causes this and does not mean that the ON OFF point has changed Deviation from set speed The GV 1 stabilizes the engine speed to within 1 of the set speed For example if the rotor R P M is set to1500rpm the Rotor R P M speed will deviate about 15 However this poses no problem from the standpoint of practical use 0 2 tc LL m 13 The GV 1 functions can be selected to match the transmitter used Select the functions by referring to the examples shown below Function Speed Governor Mixture switching on off function AOFF WON ON OFF positions CH7 example CH8 example When used with PCM1024Z 4 AQ itchi mOFF Switch
13. f the engine speed does not change linearly the governor will not perform satisfactorily with a muf fler or a pipe that does not allow the carburetion to be linear Control amp mounting Cushion the control amp with sponge rubber the same as the receiver and other parts Lu o 2 a o gt a o o N UJ Governor GV 1 FUNCTIONS LCD display and edit keys LCD panel Edit keys The set up data can be displayed Set up screen call and the governor operating state The set up screens can be sequen can be monitored tially called with the FUNC and FUNC keys The order in which the set up screens are called please see the function map SENSOR Governor cv EN THROTTLE TES on off RX gy AUX CONTRAST rune SY rr COD CH 3 THRO Futaba Data setting Data is set with the DATA and DATA keys During data setting the DATA key increases the data and the DATA key de creases the data The mode can be selected with either the DATA or DATA key SNOILLONNA E Low battery alarm When the battery voltage drops to 3 8V Low Batt is displayed When this message appears immediately stop using the model and recharge the Nicd battery 24 C Funclionmap NND FUNC key FUNC key Initial screen r Speed display monitor function P33 speed display monitor function P33 Speed functions Speed
14. g move the mt throttle stick and cut switch to the engine cut position and press a DATA or key This completes idle high stop point setting Initial values Low 1930us High 1110uS Stop 2070uS FUNCTIONS 45 SNOILONNA 46 Error display When adjusting the throttle linkage make sure that ATV and AFR are set to 50 or greater otherwise the GV 1 will not operate and ERR will be displayed Also when setting the Stop position make sure it is not higher than idle or the ERR will be displayed Throttle servo operation test Tst The servo operating position set with the limit set function can be checked Check method 1 Each time the DATA or DATA key is pressed the throttle servo moves to the Idle gt High gt Stop point set position Rotation sensor monitor monitor function The rotation sensor signal level can be checked Sen Monitoring method 1 Bring the magnet near the sensor The signal level is displayed on the LCD screen If the display is 60 or more the speed can be normally picked up If less than 60 is displayed adjust the sensor position Governor GV 1 REFERENCE Specifications and ratings are subject to change without prior notice Specifications Control system Digital advanced control Speed pick up Direct detection of engine rotation by magnetic sensor Control resolution 0 1Hz 6rpm engine speed Speed stability accuracy 1 C
15. g side This is the side at which the displayed value increases Install the magnet with this side facing the sensor Mark this side of the magnet with a felt tip pen Sensor mounting The sensor mounting method depends on the helicopter and engine 1 Mount the sensor to the sensor stay Temporary assembly 2 Drill a hole in the fan cover at the part correspond ing to the sensor so that the distance between the sensor and magnet can be made 1 to 2mm 3 Tighten the sensor siay together with the engine mounting flange Temporary assembly 4 Select the mounting method so that the sensor does not touch the frame or other parts of the he licopter Temporarily mount the sensor and select the magnet mounting position Install the sensor to the sensor stay using the accessory screws and wash ers Tighten the sensor stay together with the engine using the engine mount screw Magnet mounting Cooling fan modification 1 Drill a hole in the fan at the magnet mounting posi tion Make the hole about 4 1mm in diameter and 1 5 to 1 7mm deep 2 Embed the magnet in this hole in the direction in which an output is obtained Use epoxy adhesive that cures in 30 minutes or longer Do not use epoxies that contain metal such as JB Weld Magnet Cement the magnet to the cooling fan so that the magnet is level with this side of the cooling fan If the cooling fan is unbalanced and vibrates etc balance it by
16. ge to Off and the governor can be turned off at that switch position The engine and rotor displays can be switched with the speed display mode set up screen Speed display mode Disp The speed display mode can be changed Engine speed display Eng or rotor speed display Rot can be selected Mode switching 1 The display is switched each time the DATA or DATA key is pressed Initial value Rot Rotor gear ratio GRt This function inputs the gear ratio between the main rotor and the engine to display the rotor speed Input method 1 Input the gear ratio by pressing the DATA key increase or DATA key decrease Setting range 3 00 15 00 in 1 100 steps Initial value 9 70 FUNCTIONS 35 SNOILONNA 36 Governor ON OFF switch position setting This set up screen sets the direction of operation of the SWPt switch when the governor is turned on and off with the transmitter switch The governor on off input AUX on off connects to a receiver vacant channel Setting direction check 1 Operate the switch The off or on set direction is displayed on the LCD screen Changing the direction 1 Change the direction by pressing the DATA or DATA key Initial value Normal mode Function priority The governor ON OFF switch position set up and mixture trim func tions cannot be enabled simultaneously Therefore when the governor ON OFF switch position set up funct
17. h point is called from the transmitter with the mixture rate set up function In this mode curve data from the transmitter can be set for nine points The Dir mode is used in mixture curve initial setting Since operation is linked with the throttle stick and not with the governor after curve setting switch to the Gov mode Not all Futaba transmitters have Fuel Mixture Function FMC however it is not necessary since the GV 1 has a mixture control function Mode selection 1 Select the mode by pressing the DATA or DATA key Initial value Gov FUNCTIONS 39 SNOILONNA 40 Note Setting the Dir mode disables the governor ON OFF switch function In the Dir mode always set the mixture trim function to INH In the Gov mode when the mixture trim function is ACT the AUX m trm connector becomes the mixture trim and when the mixture trim function is INH the AUX m trm connector becomes the governor ON OFF switch input Therefore in the Dir mode when the mixture curve input signal was used operation is performed with this signal Mixture rate setting MGx MDx Each point of the mixture curve can be set When the Gov mode is set with the mixture servo operation mode function MGx is displayed and when the Dir mode is set with the mixture servo operation mode function MDx is displayed at each point x shows the number of characters of each point Nine points can be set
18. ing vO position 1 used Two positions CH7 example When used with FF8 or PCM1024Z without mixture function ASN 340434 Speed switching position 1 used Two positions Mixture CH7 example control used When used with FF8 or PCM1024Z with mixture function 14 Connection Throttle servo Not connected 2P switch channel 3P switch channel Throttle channel Throttle servo Not connected Not connected 3P switch channel Throttle channel Throttle servo Mixture servo Volume channel 3P switch channel Throttle channel Function Speed Governor Mixture switching ON OFF function Connection Throttle servo None Not connected Speed set at governor side 2P switch channel Not connected Throttle channel o 2 S x ui Throttle servo None Not connected 0 2 tc LL m 15 Speed set at Not connected governor side ON OFF Not connected Throttle stick Throttle channel Example 5 When there is no vacant channel LNAWLSNPaV 8 ATEINASSV I o Governor GV 1 ASSEMBLY amp ADJUSTMENT Mounting the magnet and sensor Modify the cooling fan and install the accessory magnet and attach the mag netic sensor to the engine at the position shown below Cooling fan Magnet Embedded in cooling fan Sensor Attached to engine flange through a stay When installing the sensor magnet to the muffler side also refer to the needle side mounting
19. ing precautions 22 FUNCTIONS 24 LCD display and edit keys 24 Low battery alarm 24 Function map 25 Initial setting for governor operation 26 Description of functions 33 REFERENCE 47 Specifications 47 Glossary 48 GV 1 PARAMETERS SHEET 49 REPAIR SERVICE 50 SNOILNVO3AYd Governor GV 1 PRECAUTIONS To ensure safe use please observe the following precautions Definition of symbols Pay close attention to the parts bols of this manual indicated by the following sym A Warning A Caution Graphic symbols Q Operations that m Indicates a procedure that could result in serious injury or death to the user or other persons if ignored and not per formed properly Indicates a procedure that could result in death or serious injury to the user or other persons as well as physical damage if ignored and not performed properly Indicates a procedure that may result in serious injury to the user or other persons or physical damage only if ig nored and not performed properly ust not be performed Q Operations that always must be performed Setting precautions A Warning When using the GV 1 for the first time or when making changes in the throw of a servo always perform the limit setting operation Setting method Page 45 o Always set battery fail safe function at the GV 1 Setting method Page 44 o z o 2 o LU tc Since the GV 1 when used control
20. ion was enabled always INH the mixture trim function Moreover always set the mixture servo opera tion mode to the Gov mode Governor ON OFF switch operation setting If the governor is turned and off by using the throttle StSw stick position then by selecting INH inhibit it willturn off the governor at the maximum slow position When this function is set to the side at which on off switching is per formed when OFF is displayed the governor is off and when ON is displayed the governor is on and can be op erated Setting method 1 Switch the mode by pressing the DATA or DATA key Initial value INH Governor ON OFF condition monitor function SWCd This function displays the present governor on off status When the governor can be operated ON is displayed This function checks all the conditions for turning the governor on and off FUNCTIONS 37 SNOILONNA 38 Setting of Governor OFF at high stick position The governor can be turned off at the high side from the set GvOf point However this function is only effective when the speed is set to 1600rpm or more It will not operate even if the speed is set to a value lower than this Setting method 1 se the point by pressing the DATA key increase or DATA key decrease Setting range 70 100 At 100 the display changes to INH and the governor re mains on all the time Initial value I
21. m in as much detail as possible and send it with a detailed packing list together with the parts that require service Symptom Including when the problem occurred System Transmitter Receiver Servo s and model numbers Model Model name Model Numbers and Quantity Your Name Address and Telephone Number Dated Proof of Purchase For Warranty Claims Please read the warranty card supplied with your system When requesting warranty please send the card along with some type of dated proof of purchase If you have any questions regarding this product please consult your local hobby dealer or contact the Futaba Service Center REFERENCE FUTABA CORPORATION Makuhari Techno Garden Bldg B6F 1 3 Nakase Mihama ku Chiba 261 8555 Japan Phone 043 296 5119 Facsimile 043 296 5124 FUTABA CORPORATION 1999 03 51
22. mounting the spare magnet to the opposite side of the cooling fan in the opposite Lu o 2 a og gt a W o o lt polarity so that it does not output a signal m 9 gt o o m 00 r lt Ro gt c c o m z N Sensor adjustment 1 Call the sensor percentage 85 Screen mm um d d DELI 2 Adjust the sensor position to ob tain a sensor output of at least Sensor Magnet 60 Center of sensor is offset Sensor Align the sensor center position and the center of the magnet shown in the figure at the left 3 Complete assembly of the sensor by securely tightening the screws that were temporarily tight ened 4 Recheck the sensor output GV 1 connections Magnetic sensor Throttle servo Control amp Governor 1 Mixture servo MIXTURE mma Connected only when NEUEN SENS e UTER fuel mixture function CH 3 THRO Futaba sed f Throtile Speed setting channel channel Connected when speed set from transmitter Governor ON OFF Mixture trim channel Connected when the governor is turned on and off from transmitter and when mixture trim function is used or when mixture curve data sent from transmit ter to governor 2 ul E o 2 a lt x og gt ul o o lt Receiver N I LNAWLSNPaV 8 ATEINASSV N N Fusel
23. n B FD This function sets the throttle position during battery fail safe operation When the battery voltage drops to 3 8V the system enters the battery fail safe mode Moving the throttle stick to the maximum slow position after battery fail safe operation temporarily resets the battery fail safe function However 30 seconds later the system enters the battery fail safe mode again Once the system enters the battery fail safe mode this operation continues until the power is turned off Setting method 1 Move the throttle stick to the de sired position and memorize the throttle position at battery fail safe operation by pressing the DATA or DATA key Initial value 2096 Set point confirmation 1 when the throttle stick is operated is displayed at the set point and the set point can be confirmed Limit set This function sets the governor control range A Warning Lmt When using the governor for the first time and when the servo throw was changed always perform limit setting again Limit setting method 1 wnen ldle is flashing set the Lind throttle stick to the maximum slow position and press the DATA or DATA key About 1 second later High begins to flash 2 When High is flashing move the mt throttle stick to the full high posi tion and press the DATA or DATA key About 1 second later Stop begins to flash 3 When Stop is blinkin
24. ng Please set the governor maximum speed to approximately 50 R P M s less Example If 1800 R P M s is max then set governor to 1750 The maximum speed can be verified at the MAX speed display however this could show some unlocked main rotor condition which is not accurate Reference The transmitter ATV function can also be used to change the point 1 and point 3 speed settings to a certain extent The amount of this change is proportional to the difference between the point 1 and point 3 set speed and the point 2 set speed For example if point 1 is set to 1300rpm and point 2 is set to 1500rpm and the transmitter ATV is changed from 20 to 100 the point 1 speed will change from 1460 to 1300rpm The transmitter ATV function has very little effect on the point 2 speed setting Speed Point 2 The speed changes linearly on a line connecting points 1 2 and 3 Speed setting channel travel Neutral Governor ON OFF operation mode setting A When governor turned on and off by on off switch 1 Call the governor on off switch position set up screen with the FUNC or FUNC key 2 Operate the ON OFF switch and verify the ON OFF directions at the LCD display 3 Use the DATA or DATA key to change the switch ON OFF directions Reference When you do not want to turn off the governor at the slow position of the throttle stick to perform inverted flight rolls and other aerobatics select INH at the governor
25. normally set in a PCM transmitter is not performed 30 1 Call the battery fail safe screen r with the FUNC or FUNC key 2 Set the battery fail safe window to ACT with the DATA or DATA UU key 3 Call the battery fail safe position window with the FUNC or FUNC key 4 set the throttle stick to the desired position and press the DATA or DATA key D The battery fail safe position is memorized When the throttle stick is operated is displayed at the set position and the set position can be verified Fail safe data setting A Warning Set the throttle channel fail safe function as described be low FUNCTIONS When used the governor controls the throttle Therefore the throttle channel fail safe function normally set in a PCM transmitter is not performed Transmitter side setting Use the fail safe function of the channel that turns the governor on and off to set the fail safe position to the point at which the governor is turned off With this setting when the system enters the fail safe state the governor is turned off and the receiver throttle signal is output directly 31 SNOILONNA 32 Speed sensor output check A Caution o Check the sensor output not only when installing the sen Sor but periodically Since the magnet rotates at high speed it is subjected to a large centrifugal force Check the magnet output and mounting state after ab
26. ontrol response 20mS Speed control range 1000 2100rpm rotor speed Speed setting Key input 10 turns step Transmitter setting 1 turn step Display 8 characters dot matrix liquid crystal display Mixture curve 9 points settable Operating voltage range DC 3 8V 6 0V Current drain 40mA at 4 8V including sensor Size 56 5x30 5x16mm body 7 5x10x16mm sensor Weight 34g body 4g sensor REFERENCE 47 39N3H3H3H 48 The Glossary gives the definition and the number of the page that describes the related function for the symbols used in this manual 2P 2 position switch 3P 3 position switch A ACT Activate AFR AFR function ATV ATV function P42 AUX Spare channel B B FS Battery fail safe P44 B FS position setting P44 CH Channel CONTRAST Contrast adjustment D DATA Data input key P24 DC Direct current Dir Direct mode P39 Disp Speed display function P35 E ERR Data setting error display F FUNC Function selection key P24 G Gov GOV Governor Governor Governor GRt Rotor gear ratio P35 GV 1 Model No of this governor GvOf Governor off high point stick position operation setting P38 H High High point P45 Idle Idle point P45 INH Inhibits operation K KEYSW Edit key L LCD Liquid crystal display Lmt Limit setting function P45 Low Batt Battery alarm M m trim Mixture trim Max MAK speed display function P33 MD Mixture rate setting function P40
27. out every 10 flights 1 Call the sensor percentage screen with a the FUNC or FUNC key 2 Position the magnet directly below the sensor If 6096 or more is displayed on the Sen screen the sensor output is OK 3 Move the magnet away from the sensor If 1096 or less is displayed on the Sen screen the sensor output is OK If the display is less than 6096 when the magnet is directly below the sen sor bring the sensor closer to the magnet so that the 6096 or more is dis played The magnet and sensor gap criteria is approximately 1 to 2mm If a sensor output is not obtained even when the sensor is brought close to the magnet the magnet and sensor center positions may have changed Description of functions The following describes in display order the functions which can be setor monitored with the GV1 The functions are described from the called state The functions can be sequentially called with the FUNC or keys Speed display monitor function rpm This function displays the engine speed or rotor speed When the governor is on rpm is highlighted and flashed When the speed comes within about 2 of the set speed rpm lights steadily When the speed reaches approximately 1 of the set speed the display changes to rpL which indicates the locked state A Caution When checking the speed be sure not to get too close to the helicopter The display can be switched between engine and rotor with
28. s the throttle the battery fail safe function that is in a PCM transmitter will not be used Because the GV 1 controls the throttle the throttle channel fail safe function normally set in a PCM transmitter will not be used Set the fail safe function as described below Transmitter setting Use the fail safe function for the channel that turns the governor on and Off to set the fail safe position to the point at which the governor is turned off With this setting when the system enters the fail safe state the governor will be turned off and the receiver throttle signal will be output directly SNOILQVO3Hd A Caution The center of the sensor is Center of sensor different from the center of is offset the sensor case so be careful when mounting the sensor Setting method Page 16 When using the PCM1024Z transmitter When using the condition hold CHD function always set the throttle servo maximum operating point MAX THR to 2096 or less Depending on the conditions this setting will turn on the governor and prevent the engine from exceeding the set speed even when condition hold is set Governor ON conditions The following conditions must be performed to turn on the governor Governor ON OFF switch set to ON position Throttle stick set to 2096 or more from slow position Engine speed raised to 7096 or more of set speed orecautions A Caution At the beginning of fligh
29. setting P34 Speed display mode P35 L Rotor gear ratio P35 p Governor ON OFF switch position setting P36 Governor ON OFF Governor ON OFF stick operation setting P37 functions Governor ON OFF condition monitor function P37 L Governor OFF high point stick operation setting P38 Battery ispl torino P38 o voltage check Battery voltage display monitor function P38 z servo operation mode P39 2 Mixture rate setting P40 o Mixture Mixture ATV P42 5 functions u servo reverse 42 L Mixture trim P43 Battery fail safe r Battery fail safe P44 functions L Battery fail safe position P44 Operating Limit setting P45 range setting functions L Throttle servo operation test P46 Sensor check Rotation sensor monitor monitor function P46 Note 1 The Limit Set screen is displayed only when the power is turned on for the first time after the GV 1 is purchased Once limit setting is performed the Speed display screen becomes the initial screen 25 SNOILONNA Initial setting for governor operation When using the governor for the first time or when the throttle linkage or the fuselage was changed always perform this initial setting The set data are saved even when the power is turned off Throttle limit setting Governor idle high stop points setting 1 Call the limit set screen with the FUNC or FUNC key
30. t keep the governor in the OFF state by setting the throttle stick to no more than 20 from the slow side While the engine is running turn on the governor at the point which the throttle stick is at least 20 from the slow side and the engine speed exceeds 70 of the set speed When the model is on the ground lower the pitch to the position at which the model does not try to lift off Do not take your eyes off the model When the governor operates and the rotor speed increases the lift also in creases causing the model to try lift off depending on the pitch position Periodically check the sensor output Check method Page 46 The magnet rotates at high speed and is subjected to a large centrifugal force Check the sensor output and mounting state about once every 10 flights If the model begins to shake during operation immediately turn off the governor See Governor on off operation mode setting on page 29 When engine speed is not stable at high R P M s The carburetor design etc may cause the engine to operate unstable If this occurs lower the maximum speed setting to the range over which there is no problem o z o 2 o LU tc Governor GV 1 BEFORE USE DE IUUD Immediately upon opening the carton check if the following items are sup plied GV 1 controlamp Governor Magnet THROTTLE om on off RX AUX rtm CONTRAST BER KEY
31. ting method 1 Switch the direction by pressing the DATA or DATA key Initial value Norm Mixture trim MTrm Set when you want to use a vacant volume channel to use the mixture servo trim function INH disables the mixture trim function To use the trim func tion set MTrm to ACT and connect the AUX m trim connector to the vacant channel you want to use Trim operates when the mixture servo is above the neutral position Adjust the trim servo travel with ATV of the transmitter AUX channel Setting method 1 Set the mode by pressing the DATA or DATA key Initial value INH Functions priority The mixture trim and governor ON OFF switch position setting func tions cannot be active at the same time Therefore when activating the mixture trim function inhibit the governor ON OFF switch position setting function D 1 Trim LaesteTc deflection 1 1 1 1 1 Throttle High servo Slow FUNCTIONS 43 SNOILONNA 44 Battery fail safe B FS The battery fail safe function can be activated and inhibited INH inhibits the battery fail safe function and ACT activates the battery safe function When activating the battery fail safe function set the servo position with the battery fail safe position function Setting method 1 Set the mode by pressing the EB T DATA or DATA key EI Initial value INH Battery fail safe positio
32. tion Setting the switch to the ON position turns on the governor The following describes this operation Throttle stick set at least 20 from slow posi A tion and engine running at 70 or more of set speed gt gt gt ON Governor canbe turned Throttle stick set to maximum slow position gt on and off by a switch gt gt Remains ON Switch set to off position gt gt gt OFF When governor turned on and off by transmitter throttle stick The data is set so that the governor can be turned on and off with the trans mitter throttle stick The following describes this operation 3sn 340434 100 Throttle stick set at least 20 from slow side and engine running at 70 or more of set speed gt gt gt ON Throttle stick held at 15 or more from slow I ort regen side gt gt gt Remains ON Throttle stick lowered 15 or more from slow OFF at slow side side gt gt gt OFF Governor operating point Set speed ih 20 of stick deflection 1 2 and 70 of set speed For safe operation do not turn on the governor under the conditions shown below If satisfied while the governor is on the following condi tions will forcibly turn the governor off When the governor is off the transmitter throttle stick controls the throttle servo Engine started while governor switch in ON position Engine speed is 70 or less of set speed and throttle stick is set to 20 or l

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