User manual FUTABA GY502

[. . . ] AVCS GYRO GY502 INSTRUCTION MANUAL YAW-AXIS STABILIZER FOR MODEL HELICOPTER (RATE GYRO) 2 Thank you for buying a GY502 AVCS gyro. Before using your new gyro, please read this manual thoroughly and use the gyro properly and safely. After reading this manual, store it in a safe place. FOREWORD The GY502 is an AVCS (Angular Vector Control System) rate gyro developed for use with . 60 type and other model helicopters. [Features] ·High-speed arithmetic processing by microcomputer allows high-speed pulse drive of servos. [. . . ] Set so that when the helicopter is banked right, left correction rudder is applied and when the helicopter is banked left, right correction rudder is applied. Gyro Gain Adjustment Initial value: 100% Adjusts the gyro gain. When A is displayed, the gyro is in the AVC mode and when N is displayed, the gyro is in the NOR mode in accordance with the operation mode setting. DATA SETTING Rudder Control Gain Initial value : ACG: 100%, NCG: 120% 17 Adjusts the rudder stick operation gain. In the AVCS mode, ACG is displayed and in the NOR mode, NCG is displayed. The display automatically changes to A or B according to the direction of the rudder stick and the gain of each direction can be set. This function is used when tracking rudder operation gain between the AVCS and NOR modes. Control Delay I Initial value : 0% Sets the delay when the rudder stick was pushed operated. Rudder stick left and right can be set separately. Control Delay D Initial value : 0% Sets the delay when the rudder stick was returned. Rudder stick left and right can be set separately. 18 DATA SETTING Gain Tracking Initial value : +0% Adjusts left and right tail braking tracking. For example, when there is a sense of hunting when stopping left pirouette or the helicopter drifts when stopping right pirouette, shift Trk in the + direction. In the opposite case, shift Trk in the - direction. Operation Mode Setting Initial : CMT Sets the gyro operation mode. In the CMT mode, G1 operates in the AVCS mode and G2 operates in the NOR mode. In the CM mode, the GY502 can be used in both the AVCS and NOR modes. DATA SETTING Servo Frame Rate Initial value : Low 19 Switches the servo output pulses. Switch to the High mode only when using a digital servo. When using a servo that cannot be driven by high-speed pulses, other than a digital servo, never set servo frame rate to the High mode. The servo may be destroyed. 20 DATA SETTING AVCS Sense Initial value : 100% Adjusts the rudder control characteristic in the AVCS mode. Adjust by checking the rudder operation feel and stopping characteristic. Linkage Limit Setting Initial value : 100% Sets the rudder servo travel limit. Operate the rudder stick and adjust the rudder servo travel limit by pressing the +/- key so that the servo moves to the maximum linkage position. When setting, move the servo substantially so that the rudder angle automatically becomes 200% and limit setting is easy. Note: When this screen is displayed, the GY502 does not operate as a gyro. To check operation, return to the initial screen, etc. DATA SETTING 21 Remote Gain Function The remote gain function lets operator perform AVCS mode and Normal mode sensitivity adjustment and operation mode switching from the transmitter. (Channel 5 is used. ) (Remote Gain Function) Transmitter Gain/Mode Selection · CH5 switch · Idle-Up switch (T8Usuper) · Flight condition (T9Z) Receiver GY501 Mode Settings · Normal mode (NOR) · AVCS mode (AVC) · Selectable mode (CMT) Gain Settings · ATV function · Gyro mixing (T8Usuper/T9Z) · Programmable mixing (T9Z) Gain Settings · Gyro Gain Adjustment Remote Gain Channel (CH5) 22 DATA SETTING When Using a T9Z World Champion Model Transmitter Gyro Sense Mixing The Gyro Sense Mixing (GYR) function lets operator perform two-point gain adjustment at each condition. Set the sensitivity at all conditions. [GY502 Settings] Select the gyro operation mode at the GY502 Mode screen. (AVC, NOR, or CMT) [Transmitter Settings] ATV function: Adjust both the RATE A and RATE B rates to 100% at the transmitter ATV function setup screen. Select the Dual Mode (DUO) at the transmitter Gyro Sense Mixing setup screen. [. . . ] (*1) In the case of the T9Z GYR function, GY502 gain is 0% for a transmitter setting of 50%. When the gain is set above 50%, the GY502 operates in the AVCS mode and when the gain is set below 50%, the GY502 operates in the normal mode. The gyro gain changes 2% for every 1% gain change. 36 INSTALLATION AND ADJUSTMENT When using a transmitter without a gyro gain switching function, connect the gain setting connector to an idle channel and set the GY502 G1 and G2 gains using this gain setting screen. Transmitter setting check Checks the transmitter setting in the ACVS mode. [. . . ]