INSTRUCTION MUNUAL for Futaba 6EXHP 6-channel, PCM/PPM(FM) selectable Radio control system for helicopter Futaba Corporation Technical updates available at: http://www.futaba-rc.com Entire Contents © Copyright 2005 1M23N12008 FUTZ8564 V1.
TABLE OF CONTENTS Introduction ..........................................................................2 Service ..................................................................................2 Contents and specifications ...............................................3 Introduction to the 6EXAP system.....................................4 Transmitter controls and descriptions ..............................4 Radio installation .................................................................
CONTENTS AND SPECIFICATIONS Transmitter: T6EXHP T6EXHP Transmitter with 6-model memory. Transmitting on 35, 40, 41, or 72 MHz band. Operating system: 2-stick, 6-channel system Modulation: FM(PPM) and PCM Power supply: 9.6V NT8S600B Ni-Cd battery or 12V alkaline battery Current drain: 250mA Servos: S3001 S3001 standard ball bearing Control system: Pulse width control,1.52ms neutral Power requirement: 4.8 or 6V (from receiver) Output torque: 44.4oz-in [3.2kg-cm] @4.8V Operating speed: 0.23sec/60°@4.
INTRODUCTION TO THE 6EXHP SYSTEM IMPORTANT!: Always turn on the transmitter first, then the receiver. When turning off the system, always turn off the receiver first. The object is never to have the receiver on by itself. Otherwise, the servos or control surfaces could be damaged, or in the case of electric-powered models, the motor may unexpectedly turn on causing severe injury. IMPORTANT!: Never collapse the transmitter antenna by pushing down from the top.
Charging jack - Port for charging the transmitter batteries with the included battery charger. On-off switch On/off switch DATA INPUT lever - Used to change the values of the various functions displayed on the LCD screen Liquid - crystal display screen (LCD) - Displays programming modes and values entered. MODE key - Used to scroll through and display the “13” or “14”(PCM) different functions. SELECT key - Used to display the values for the current function.
• After the servos are installed, operate each servo over its full travel and check that the pushrods and servo arms do not bind or contact each other. Also make sure the controls do not require excess force to operate. If there is an objectionable buzzing sound coming from a servo, there is probably too much resistance in the control. Find and correct the problem. Even if there is no servo damage, excess battery drain will result.
RECEIVER AND SERVO CONNECTIONS Connect the servos to the receiver to perform the functions indicated: Receiver output channel Function 1 Aileron 2 Elevator 3 Throttle 4 Rudder 5 Gyro sensitivity 6 Pitch 7 Not used B Receiver on/off switch (the plug colored red goes into the receiver) ������������������������������������������������������������������������������������������������������� �������� ��������� ��������������� �� �������� ������� �������� ���� ����������� ����� � � � � � � �
called “memory.” If, for example, only two flights are made each time you go flying, the batteries will not have “reached” very far down into their full capacity. After doing this several times the batteries will “remember” and eventually “think” they can supply only enough power for two flights. After two flights the batteries may not provide enough power to operate the system, thus causing a crash.
Model memory number and model name The Futaba T6EXHP stores model memories for six models. This means all the data (control throws, trims, end points, etc.) for up to six different models can be stored in the transmitter and activated at any time (depending upon which model you choose to fly that day).
PROGRAMMING THE 6EXHP RADIO Anytime you wish to view or change any of the current settings in the transmitter, the programming mode must first be entered by, of course, turning on the power, then by pressing the “MODE” and “SELECT” keys simultaneously and holding them down for one second.
PULS Modulation select function The Modulation select function is used to select the PPM or PCM mode of transmission, to match the receiver being used (PPM-Pulse Position Modulation, also called FM for Frequency Modulation, and PCM-Pulse Code Modulation). To select modulation: 1. Access the Model Select function in the programming mode (by pressing the MODE and SELECT keys simultaneously and holding them down for one second). Use the DATA INPUT lever to select the model memory you wish to modulation select.
Dual Rates / Exponential Settings The aileron, elevator and rudder dual rates on the 6EXHP are simultaneously activated by the dual rate switch. The amount of travel decrease for each control may be set between 0% and 100% of the values set for the end points (explained in End Point Adjustment on page 12). Note: It is possible to set a dual rate value to zero, thus causing no response from that channel. If the dual rates are inadvertently set to zero, a crash could result.
correct throw. The pushrods should first be connected to the servo arms and control horns so that the correct, or near correct control surface throw will be achieved. THEN the EPAs may be used to make small changes in the servo throw until the desired control throw is achieved. The control throws should be set up so that the “end points” are as near to 100% as possible.
N-TH Normal throttle curve function Used to set throttle curve for normal flight. 5-point throttle curve is utilized to best match the blade collective pitch to the engine RPM for consistent load on the engine. Throttle curve can be adjust from 0-100% each point. This normal throttle curve create basic curve for around hovering. Use this function together with the normal pitch curve (see Normal pitch curve) so that up/down control has a constant engine speed. To set the normal throttle curve: 1.
3. Use SELECT key to select the desire curve point. Point 1 is shown initially which is throttles stick all the way downward (slow) position. Point 5 is throttles stick all the way upward (hi) position. 4. Push up or down DATA INPUT lever to set the servo position. 5. Use SELECT key to set other points with same manner. I-PI Idle-up pitch curve function: Used to set pitch curve for idle up flight.
REVO Pitch-rudder mixing function This mix adds rudder in conjunction with pitch. This helps compensate for rotation of the helicopter caused by the increased engine torque. (Never use revo. mixing with a heading-hold/AVCS gyro which is in heading hold/AVCS mode. However, revo. mixing is still used when a heading-hold/AVCS gyro is in normal mode.) To set the REVO mixing: 1. Enter the programming mode and use the MODE key to access the “REVO” function. 2. Push the DATA INPUT lever upward.
• Heading-Hold SMM: 21st Century gyro technology. Computer chip technology. Expensive, easier set up, higher durability. Significant decrease in temperature sensitivity. Many include frame rate settings to allow faster response when using specialized digital servos. Examples: • GY401: Simpler set up. Ideal for learning aerobatics through 3D. • GY502: Better centering than 401 for more advanced aerobatics. Ideal through Class III competition. • GY601: Exceptional center. Extremely fast response time.
SWSH Swashplate types selection & Swash AFR This function can chose from two swashplate types. Swash AFR can be set, if you chose 3-S type 1-S: Independent aileron, pitch and elevator servos linked to the swashplate. Most kits are 1-S type. �������� 3-S: With Aileron inputs, the aileron and pitch servos tilt the swashplate left and right; with Elevator inputs, the three servos tilt the swashplate fore and aft; with Pitch inputs, all three servos raise the swashplate up and down.
F/S Fail Safe (PCM mode only) The Fail Safe function is used to prescribe what the PCM receiver will do in the event radio interference is received, and doesn’t work FM(PPM) receivers. In this menu, you may select from one of two options of operation for each channel. The “NOR”(normal) setting holds the servo in its last commanded position, while the “F/S”(Fail Safe) function moves each servo to a predetermined position. Throttle channel is set to “F/S” as a default. All the other channels are set to “NOR”.
FLOW CHART 6EXHP FUNCTIONS ���������� To enter or leave Programming Mode, press MODE and SELECT keys simultaneously for one second. (Screen at Startup) To change the Stick Mode, turn on the transmitter holding MODE and SELECT keys down simultaneously. Use the DATA INPUT lever to display the desired stick mode.
OTHER 6EXHP FUNCTIONS Trainer function (student only) The T6EXHP trainer function lets you practice flying as student by connecting the T6EXHP to the instructor’s Futaba transmitter. When two radios are connected with the trainer cord, they are both capable of operating the model, but it’s usually best for the instructor to hold the radio that has been setup for the plane to be flown (as it is already programmed to fly the model).
Changing the 6EXHP stick mode The transmitter may be operated in four different stick “modes” (1, 2, 3 & 4). The modes determine the functions that will be operated by control sticks. Currently, the transmitter is in “mode 2” and should be left in mode 2 unless you are an experienced flyer and have learned to fly in a different mode. In mode 2, the right control stick operates the aileron and elevator and the left stick operates the rudder and throttle. This is how 99% of Americans fly their models.
FLIGHT PREPARATION Flight preparation is to be done at the flying field. IMPORTANT: Your radio control system transmits a signal on a certain frequency. Be certain you know what the frequency is. This is expressed as a two-digit number (42, 56, etc.), and can be found on the container the transmitter came in and is also located on the transmitter and receiver. There are several different frequencies, but there is still a chance that someone else at the flying field may be on the same frequency as you.
MODEL DATA RECORDING SHEET (Make copies before using) Model name: Model No.
