FUTABA CGY750 Instruction Manual
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FUTABA CGY750 Instruction Manual

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1M23N24914
T
ABLE OF
• Introduction -----------------------------------------------------------------2
• Warranty and Repair Service (in U.S.A.) ---------------------------------2
• Features ----------------------------------------------------------------------2
• Contents ----------------------------------------------------------------------2
• Precautions ------------------------------------------------------------------3
• Specifications ---------------------------------------------------------------3
• Replacement and Optional Items --------------------------------------4
• Gyro Sensor Installation ------------------------------------------------------ 4
• Connecting the CGY750 ----------------------------------------------------5
• TX Set-up ------------------------------------------------------------------------- 6
• Governor Installation -----------------------------------------------------6
• Governor Fuselage Setting Precautions -----------------------------6
• First Map ------------------------------------------------------------------------- 7
• Opening Screen-------------------------------------------------------------7
• Home Screen ----------------------------------------------------------------7
• Warning Display ------------------------------------------------------------8
• Setting Menus --------------------------------------------------------------9
• S.BUS Basic Setting ------------------------------------------------------ 10
• Swash Servo Installation and Setup --------------------------------- 11
• Aileron/Elevator Gyro Setup ------------------------------------------ 11
• Swash Basic Setting ----------------------------------------------------- 12
• Swash Detail Setting ---------------------------------------------------- 14
• Linkage Compensation ------------------------------------------------- 15
• Flight Tuning Setting --------------------------------------------------- 16
• Governor Basic Setting ------------------------------------------------- 18
• Governor Speed Setting ------------------------------------------------ 20
• Governor Operation ----------------------------------------------------- 20
• Recommended Gyro Gain Settings ---------------------------------- 20
• Before Flight Checklist -------------------------------------------------- 20
• Adjustments During the Test Flight --------------------------------- 20
• Tunning Guidelines for CGY750 -------------------------------------- 21
• Flight Tune Expert Setting --------------------------------------------- 22
• Rudder Gyro Expert Setting ------------------------------------------- 22
• Governor Expert Setting ----------------------------------------------- 23
• Condition Menu ---------------------------------------------------------- 24
• CGY750V2-3D-MAP ------------------------------------------------------ 26
• CGY750V2-F3C-MAP ----------------------------------------------------- 28
• F3C Style Tuning Section ----------------------------------------------- 30
: Instructions for gyro functions
Gyro
: Instructions for governor functions
Governor
Technical updates and additional programming examples can be found at:
V2.0~
C
ONTENTS
www.futaba-rc.com/faq

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Summary of Contents for FUTABA CGY750

  • Page 1: Table Of Contents

    • Adjustments During the Test Flight --------------------------------- 20 • Tunning Guidelines for CGY750 -------------------------------------- 21 • Tips for Using the CGY750 Governor with Electric Models ---- 21 • Flight Tune Expert Setting --------------------------------------------- 22 • Rudder Gyro Expert Setting ------------------------------------------- 22 •...

  • Page 2: Introduction

    • Compatible with 1520μS Analog (70Hz) and 1520μS Digital (280Hz) helicopters. throttle servo types. • Feed Forward Option allows the CGY750 to consider other control func- tions during operation. This results in precise governing of the head speed. ARRANTY &...

  • Page 3: Precautions

    Do not drop the CGY750 sensor onto a hard surface or subject the WARNING - Procedures which may lead to a dangerous condition CGY750 sensor to a strong shock as this may damage the sensor.

  • Page 4: Replacement And Optional Items

    Route the gyro are capable of placing large demands on the power sensor lead to the CGY750 control box and plug the lead into the gyro systems in use today. When using a regulator you sensor port.

  • Page 5: Connecting The Cgy750

    S.BUS adapter available separately. functions are not used, it is necessary to set the channel number to [INH] within the CGY750’s S.BUS menu to disable the function and to use the Using the supplied extension connect the S.BUS receiver port (or from setting value inside the CGY750 menu instead.

  • Page 6: Tx Set-Up

    TX Set-up If the cooling fan is unbalanced and vibrates, etc., balance it by mounting the spare magnet to the opposite side of the cooling fan in the opposite Condition selection polarity (so that it does not output a signal). Condition selection incorporates two adjustable values for a given Sensor mounting parameter (displayed c1/c2).

  • Page 7: First Map

    + tail rotor servos will move several times in quick succession. If the CGY750 is set to the [Gyro+THR] mode or if the H4-xx swash plate type has been selected then the governor will be disabled and the screen will look like (d) below instead.

  • Page 8: Warning Display

    When the [Saver] option is selected, the display will dim after 60 seconds If this condition lasts for more than one second, then the Battery Fail Safe of inactivity. Once a button is pressed on the CGY750 controller box, the function activates, and the throttle servo is brought back to idle position.

  • Page 9: Setting Menus

    Memory writing indicator WARNING Do not power off the CGY750 when the Memory writing symbol is dis- played. When a setting is changed within the CGY750 the new value must be written to memory. The “Memory writing indicator” is displayed during this process.

  • Page 10: S.bus Basic Setting

    ETTING Since S.BUS sends all 18 channels (may be limited by your transmitter) over a single wire, it is necessary to assign a CGY750 function (such as AIL, ELE or PIT) to each channel. The channel assignments are performed within the [S.BUS].Basic menu.

  • Page 11: Swash Servo Installation And Setup

    Normal the nose of the helicopter downward. The CGY750 should compensate by adding aft cyclic to the swash plate.) If the CGY750 compensates in the wrong direction, reverse the Compensation Direction setting by pressing the DATA [+] or [-] key once.

  • Page 12: Swash Basic Setting

    [Gyro+H4] Must be selected when a [H4 xx] swash plate type is selected. This disables the governor and throttle servo output and the [TH/E2] port on the CGY750 is now the second “Elevator” [E2] servo output. (3) Servo type [default: DG:285Hz]...
  • Page 13 RIGHT full and push the DATA [+] or [-] key. The RIGHT direction of the aileron data will be saved to CGY750. To confirm the setting, move the aileron stick to full RIGHT, and the “!” mark will appear on the display.

  • Page 14: Swash Detail Setting

    WASH ETAIL ETTING The swash detail menu contains settings for pilots looking to achieve the absolute best performance from their gyro by precisely adjusting swashplate movement so as to virtually eliminate adverse flight behavior during some maneuvers such as roll or loops/flips. Items (1) – (15) are used to keep the swash plate level at high and low collective pitch and to reduce or eliminate PIT cyclic and AIL ELE and ELE...

  • Page 15: Linkage Compensation

    Pitch calibration (This should be set prior to the compensation process) Mixing rates for both left and right aileron should be adjusted. Move the This parameter reads the collective pitch operation ranges to the CGY750. collective stick to minimum position. Adjust SWcp.AIL rate the same as Move the collective stick to center position (Pitch zero point).

  • Page 16: Flight Tuning Setting

    LIGHT UNING EFINITIONS DJUSTMENT The [Flight Tuning] → This menu contains all of the functions necessary to set up the CGY750 roll / pitch axis for operation. FLIGHT TUNING MAP MODE Push +/– key (1) Start display The editing menus are scrolled by pushing the MODE+ or – key.

  • Page 17: Tail Rotor Gyro Set Up And Rudder Basic Setting

    (4) Limit setting [default: 100%, setting range: 50~150%] When the CGY750 is in the Sv.Limit parameter the gyro will no longer operate and the tail servo will always center when the tail rotor stick is released.

  • Page 18: Governor Basic Setting

    H4-00/H4-45. sor type, set the pole number to 2p. NOTE: The input signal range of the CGY750 is 0.0v-3.0v. Exceeding this voltage range may cause damage to the CGY750. ****Please see the Governor EXPERT menu in the ADVANCED TUNING SECTION at the end of this manual for additional guidelines for governor use with electric models.
  • Page 19 RSET (Data-) key. (8) Servo limit point setting WARNING Servo limit point setting defines the overall trav- When using the CGY750 for the first time, or DATA Push el range for the throttle servo. It is fundamental when making changes in the throw of a servo +/–...

  • Page 20: Governor Speed Setting

    The engine speed exceeds to 60 % of the setting speed. The speed sensor is working properly. * When the CGY750 is used with a ESC or BEC and a power switch is The following operations do not indicate trouble: not used there is a possibility that the intermittent connection as you connect the flight battery may cause the CGY750 initialization to fail.

  • Page 21: Tunning Guidelines For Cgy750

    Observed cyclic travel when the If the model yaws nose left with aggressive collective input, activate and CGY750 is NOT in the SWS.Rate menu will be several degrees more than the adjust the PIT → RUD F/F (feed forward) mixing. Increase in 2-5% in- measured static pitch.

  • Page 22: Flight Tune Expert Setting

    Expert Gyro and Governor Definitions and Tuning Section XPERT ETTING The FLT.Tune menus allow further refinement of cyclic gyro performance. It should be stressed, however, that the default values for the listed param- eters will yield excellent performance for the vast majority of models. To enter the FLT.Tune menu, navigate to the Flight Tuning menu and then press and hold the MODE [+] or [-] key for one second.

  • Page 23: Governor Expert Setting

    Expert Gyro and Governor Definitions and Tuning Section OVERNOR XPERT ETTING This menu sets the details of the governor function for the expert modeler. Push the mode + or – key for more than one second on the Governor Basic menu display, to get into the Governor Expert menu.
  • Page 24 Cond Menu When the condition menu is turned on, [CondMenu] appears newly. It becomes possible to change the function indicated by a map of [CondMenu] to 2 conditions. The function included in [CondMenu] disappears from the usual menu. COND MENU MAP 1/2 (1) Start display T h e e d i t i n g m e n u s a r e MODE...
  • Page 25 TRANSMITTER adds to the value set in the CGY750. It is suggested that the exponential function in the CGY750 be used primarily to tune for a linear control feel, and that has been the goal of the default setting. From there if the pilot wishes to soften or sharpen the feel of the model around center cyclic stick, then the transmitter’s exponential function would...

  • Page 26: Condition Menu

    CGY750V2-3D-MAP Home P&H P&H P&H P&H Basic⇔Expe P&H ： Push and hold （MO Flight Tuning Start RUD Gyro Basic Start Condition Basic Start Swash Basic Start S.BUS Basic Start Gover Basic Start Operation mode Gyro base gain Servo type Swash rate Aileron channel Revolution setting Servo type...
  • Page 27 MODE＋－　: DATA＋－　： Home P&H P&H P&H P&H Basic⇔Expert P&H ： Push and hold （MODE) Swash Detail Start Governor Expert Start Rudder Expert Start Aileron Expert Start S.BUS Basic Start Pirouette speed PIT→AIL mixing rate Governor working mode Dead band Aileron channel Control delay in PIT→ELE mixing rate Revolution display mode...

  • Page 28: Cgy750V2-F3C-Map

    CGY750V2-F3C-MAP Home P&H P&H P&H P&H Basic⇔Expert P&H ： Push and hold （MODE) Flight Tuning Start RUD Gyro Basic Start Condition Basic Start Swash Basic Start S.BUS Basic Start Gover Basic Start Gyro working mode Operation mode Servo type Swash rate Aileron channel Revolution setting Servo type...
  • Page 29 MODE＋－　: DATA＋－　： Home P&H P&H P&H P&H Basic⇔Expert P&H ： Push and hold （MODE) Swash Detail Start Governor Expert Start Rudder Expert Start Aileron Expert Start Elevator Expert Start asic Start I.Gain AI I.Gain EL 80 % 80 % PIT→AIL mixing rate Governor working mode Rudder servo neutral Integral gain...

  • Page 30: F3C Style Tuning Section

    - direction. This function sets the rotational equalizer direction. Setting method: When the CGY750 is in this mode, the swashplate (Rudder Expert) F/F mixing [default:off ] will tilt on direction and stay that way. Observe the direction of the tilt relative to the surface on which the model sits.
  • Page 31 ©Copyright 2013. 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. While this manual has been carefully written, there may be inadvertent errors or omissions. Please contact our service center if you feel that any corrections or clarifications should be made. FUTABA CORPORATION Phone: +81 475 32 6982, Facsimile: +81 475 32 6983 1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba 299-4395, Japan ©FUTABA CORPORATION...

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