FUTABA GV-1 Instruction Manual Download Page 49

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5 1

REFERENCE

©FUTABA CORPORATION 1999,03

FUTABA CORPORATION

Makuhari Techno Garden Bldg., B6F 1-3 Nakase, Mihama-ku, Chiba 261-8555, Japan
Phone: (043) 296-5119 Facsimile: (043) 296-5124

Summary of Contents for GV-1

Page 1: ...3 3 3 3 3 GOVERNOR FOR MODEL HELICOPTER GV 1 INSTRUCTION MANUAL...

Page 2: ...n 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 dis...

Page 3: ...1 operation 12 Examples 14 ASSEMBLY ADJUSTMENT 16 Mounting the magnet and sensor 16 GV 1 connections 21 Fuselage setting precautions 22 FUNCTIONS 24 LCD display and edit keys 24 Low battery alarm 24...

Page 4: ...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 a...

Page 5: ...at 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...

Page 6: ...hold CHD function always set the throttle servo maximum operating point MAX THR to 20 or less Depending on the conditions this setting will turn on the governor and prevent the engine from exceeding t...

Page 7: ...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 4...

Page 8: ...ff on off Tx GV 1 Sx SENS r p m THRO m trim BEFORE USE Set contents Immediately upon opening the carton check if the following items are sup plied Miniature screwdriver GV 1 control amp GV 1 magnetic...

Page 9: ...he speed and set data Sensor connector Servo connectors Receiver connectors Edit keys Used to set data Press with the accessory miniature screwdriver LCD contrast trimmer The display contrast can be a...

Page 10: ...n and engine running at 70 or more of set speed ON Throttle stick set to maximum slow position Remains ON Switch set to off position OFF When governor turned on and off by transmitter throttle stick G...

Page 11: ...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 vert...

Page 12: ...mple CH8 example When used with PCM1024Z 2P switch channel 3P switch channel Throttle channel Sx Rx Sx Rx Sx Rx Example 2 Speed switching position 1 used None Throttle servo Not connected Two position...

Page 13: ...nection Example 4 None None Throttle servo Not connected Speed set at governor side 2P switch channel Not connected Throttle channel Example 5 None None Throttle servo Not connected Speed set at gover...

Page 14: ...n shown below Magnet and sensor mounting 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...

Page 15: ...center of engine shaft Cooling fan Magnet mounting method The tables below show the magnet mounting position example for each en gine 60 engine 30 engine Mounting position Distance from center of eng...

Page 16: ...until the sensor percentage screen is displayed 4 Bring the magnet near the end of the sensor and check the op erating side This is the side at which the displayed value increases Install the magnet w...

Page 17: ...screw Cement the magnet to the cooling fan so that the magnet is level with this side of the cooling fan Magnet Magnet mounting Cooling fan modification 1Drill a hole in the fan at the magnet mountin...

Page 18: ...a sensor output of at least 60 1 2mm Magnet Sensor 2 2 mm 3 7mm 3 7mm Center of sensor is offset Sensor case Align the sensor center position and the center of the magnet shown in the figure at the l...

Page 19: ...y when fuel mixture function used Throttle channel Speed setting channel Connected when speed set from transmitter Governor ON OFF Mixture trim channel Connected when the governor is turned on and off...

Page 20: ...ture the governor may not operate to its maximum potential 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...

Page 21: ...2 3 2 3 2 3 2 3 2 3 ASSEMBLY ADJUSTMENT Control amp mounting Cushion the control amp with sponge rubber the same as the receiver and other parts...

Page 22: ...ith either the DATA or DATA key The set up data can be displayed and the governor operating state can be monitored Set up screen call The set up screens can be sequen tially called with the FUNC and F...

Page 23: ...etting P38 Battery voltage check Governor ON OFF functions Speed functions Battery voltage display monitor function P38 Mixture servo operation mode P39 Mixture rate setting P40 Mixture functions Mixt...

Page 24: ...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...

Page 25: ...gear ratio calculate the gear ratio as fol lows Gear ratio N1 N2 Carry values less than 1 1000 to the next whole number Speed setting Set at control amp Three speeds can be set This is standard when...

Page 26: ...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...

Page 27: ...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 ON OFF stick operation set up StSw screen B Wh...

Page 28: ...s set 15 or less from the slow side the governor is turned on Until the start of flight keep the governor in the off state with the throttle stick at 15 or less from the slow side This is the engine s...

Page 29: ...e set position and the set position can be verified Set the throttle channel fail safe function as described be low When used the governor controls the throttle Therefore the throttle channel fail saf...

Page 30: ...e magnet directly below the sensor If 60 or more is displayed on the Sen screen the sensor output is OK 3 Move the magnet away from the sensor If 10 or less is displayed on the Sen screen the sensor o...

Page 31: ...1 of the set speed the display changes to rpL which indicates the locked state When checking the speed be sure not to get too close to the helicopter The display can be switched between engine and rot...

Page 32: ...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 rS2 only rS1 and rS3 are disabled When usi...

Page 33: ...switching 1The 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...

Page 34: ...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...

Page 35: ...e 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 1Switch the mode by pressing th...

Page 36: ...play changes to INH and the governor re mains on all the time Initial value INH Note When the governor set speed and the engine speed at the point at which the governor is turned off are considerably...

Page 37: ...s 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...

Page 38: ...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 s...

Page 39: ...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 ATV data of the mix ture channel set at the transmi...

Page 40: ...rate 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...

Page 41: ...rates when the mixture servo is above the neutral position Adjust the trim servo travel with ATV of the transmitter AUX channel Setting method 1Set the mode by pressing the DATA or DATA key Initial va...

Page 42: ...en 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 batter...

Page 43: ...e stick to the maximum slow position and press the DATA or DATA key About 1 second later High begins to flash 2When High is flashing move the throttle stick to the full high posi tion and press the DA...

Page 44: ...est 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 High Stop point set po...

Page 45: ...ol resolution 0 1Hz 6rpm engine speed Speed stability accuracy 1 Control response 20mS Speed control range 1000 2100rpm rotor speed Speed setting Key input 10 turns step Transmitter setting 1 turn ste...

Page 46: ...Battery alarm Glossary The Glossary gives the definition and the number of the page that describes the related function for the symbols used in this manual M m trim Mixture trim Max MAX speed display...

Page 47: ...alue Remarks Speed 1 rS1 Speed 2 rS2 Speed 3 rS3 Speed display Disp Rotor gear ratio GRt Mixture trim MTrm Stick ON OFF mode StSw Governor high side off GvoF Mixture rate Mixture servo reverse MSx MD1...

Page 48: ...quire 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...

Page 49: ...5 1 5 1 5 1 5 1 5 1 REFERENCE FUTABA CORPORATION 1999 03 FUTABA CORPORATION Makuhari Techno Garden Bldg B6F 1 3 Nakase Mihama ku Chiba 261 8555 Japan Phone 043 296 5119 Facsimile 043 296 5124...

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