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Summary of Contents for PowerBox Systems Mercury SRS
- Page 1 Instruction Manual 04/2016 ®...
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Page 2: Product Description
OLED screen, and the ON / OFF switch. 1.1. Installing the Mercury SRS in the model The Mercury SRS must be screwed to a hard surface in the model, otherwise it is possible that the integral iGyro will not work properly. If the mounting plate is large, it must be stiffened by the addition of cross-struts. - Page 3 The actual orientation of the Mercury SRS is unimportant: it can be installed in any location which is at 90° to the direction of flight. The actual installed position is automatically detected later when the Assistant is invoked.
- Page 4 3. Basic settings 3.1. Selecting the radio control system The Mercury SRS must be informed which radio control system you wish to use, as the bus systems of the various manufacturers differ very widely. You only need to enter this information once.
- Page 5 Bear in mind the following points: - Futaba FASST und FASSTEST The Mercury SRS works with the S-BUS signal. Many receivers require one output to be re-assigned to S-BUS: • R7003SB: no adjustment necessary; signal present at “PORT 1”.
- Page 6 Primary settings: • Signal speed: 10 ms • PPM settings: Direct • Failsafe: Inactive (if two receivers are in use; otherwise any setting) Telemetry: if you wish your transmitter to receive telemetry data, connect the TELE output of the PowerBox to the EXT input of your satellite. - Graupner HoTT When a HoTT system is used, the receivers should first be bound;...
- Page 7 BACK and return to the previous screen. 4.1. Installed position The Mercury SRS features an integral six-axis sensor which enables it to detect its installed orientation automatically. All you have to do is press the model’s tail down (tricycle under-carriage) or lift it up (tail-dragger undercarriage).
- Page 8 You can install the Mercury SRS in any position, provided that the case is at right-angles (90°) to the fuselage centreline. 4.2. Model type The next step is to select the model type which is the closest match to your aircraft.
- Page 9 -09-...
- Page 10 4.3. Flight mode switch Assign a three-position switch of your choice at the transmitter, and check that the travel is set to -100% to 0% to +100%. At a later point this switch will be used to call up the gyro functions you have already set. Move the switch once to all three positions in turn, and the channel will automatically be detected.
- Page 11 4.5. Flight mode configuration The next stage is to define the gyro function required for each flight mode. This setting defines the task which the iGyro is to carry out in flight modes 1, 2 and 3. Note that in flight mode 1 the Assistant only permits the functions OFF or RATE MODE.
- Page 12 Assistant procedure) are activated. This means that rudder and elevator mixers must not be set up at the transmitter, as the Mercury SRS carries out these functions. When the flight mode option is disabled again, thrust vector control is restored to the neutral position which was detected when the PowerBox was first switched on.
- Page 13 The left-hand column shows the detected channel; in the centre is the function; the right-hand column shows the associated output of the Mercury SRS. You can immediately plug in your servos and check their operation. The Mercury also detects whether you are using, say, one or two channels for aileron or elevator.
- Page 14 This completes the Setup Assistant procedure. In the following stage all the remaining functions, such as retract system, brakes and lighting, are assigned and adjusted where necessary using the servo-matching function. 5. Output mapping Since the Setup Assistant does not cover all the functions, Output Mapping is employed to assign additional functions to the outputs;...
- Page 15 Example: a) The right-hand aileron is connected to GY AILE-R, the left-hand aileron to GY AILE-L. b) The rudder is connected to GY RUDD-A, the steerable nosewheel to GY RUDD-B. - DOORS. 1 to 5: If you select one of these functions, the appropriate output is linked to the door sequencer.
- Page 16 6. Servomatching The Servo-Match function provides the facility for adjusting the centrepositi- on and end-points of the servos connected to the backer. If you have a model aircraft with more than one servo per control surface, this makes it possible to set up multiple servos to move to identical positions at identical times.
- Page 17 The following examples illustrate the correct procedure for the Servo-Match function: a) Fine-tuning multiple servos connected to a single control surface; in this example: right aileron connected to output A and output B - Disconnect the linkages from the unmatched servos, as they may exert damaging forces during the adjustment procedure! - First adjust the mechanical linkage of one servo (generally the inboard one, i.e.
- Page 18 c) Reversing one output where servos are installed in a mirror-image arrangement; in this example right and left landing flaps, connected to OUT E and OUT K - Disconnect the linkage to the left-hand landing flap, to avoid the servo being subjected to severe forces during the adjustment procedure.
- Page 19 7. Setting up the door sequencer Select the SEQUENCER point at the main menu; this takes you to the following screen display: The SETUP ASSISTANT assists you to adjust the sequence of the undercarriage and the wheel doors in just a few minutes. The EXPERT MENU provides a very powerful programming interface, with which you can program highly individual sequences, or alternatively expand the settings previously entered using the SETUP ASSISTANT.
- Page 20 Operate the appropriate transmitter switch, and the PowerBox automati- cally detects it as the switch which you have assigned to the retract system. The on-screen arrows should now be located in front of UP/DOWN. If you find that your retract switch works in the wrong “sense” (direction), correct it by reversing that output at the transmitter.
- Page 21 Mode 3: Extend undercarriage: Open nosewheel doors → extend nosewheel → close nosewheel doors Open main wheel doors → extend main undercarriage → close main wheel doors Retract undercarriage: Open nosewheel doors → retract nosewheel → close nosewheel doors Open main wheel doors → retract main undercarriage → close main wheel doors Move the cursor to the appropriate mode, and press the SET button to confirm your choice.
- Page 22 The undercarriage should now retract. If not, hold button I pressed in until the valve is triggered, and the undercarriage retracts. Press the SET button to move on to the next stage of the procedure: Connect the servo for the first nosewheel door to output F. Use the SET button to close the first nosewheel door, then confirm by pressing the SET button.
- Page 23 When you have done this, confirm by selecting OK. At the next screen you must move the flight mode switch to FM2, and set the gain control to 0%. As soon as you have done this, the Mercury SRS skips to the set-up screen display. -23-...
- Page 24 At this point reduce gain slightly until the model shows no sign of oscilla- ting in any speed range. Note: if you are using the Mercury SRS without GPS II, it is vital to ensure that the gain you set does not allow the model to oscillate even at full-throttle.
- Page 25 FM2: ATTITUDE ASSIST STD Aileron: ATT.ASSIST: on Elevator: ATT.ASSIST: on Rudder: ATT.ASSIST: off FM3: TORQUE ROLL Aileron: 100% ATT.ASSIST: on Elevator: 100% ATT.ASSIST: on Rudder: 100% ATT.ASSIST: on The set-up procedure for your model is now complete. The following section explains all those functions which are available if you select the manual fine-tuning procedure.
- Page 26 - AXIS: at this point you select the axis which is to be adjusted. The Mercury SRS offers six axes: Aileron-R, Aileron-L, Elevator-R, Elevator-L, Rudder-A and Rudder-B. - FM: here you select the flight mode which you intend to alter. The flight mode is selected using the transmitter switch you have already assigned (Input Mapping).
- Page 27 The higher the airspeed factor, the lower the gyro gain as the model’s airspeed increases. 9.4. Door sequencer The door sequencer in the Mercury SRS provides completely unrestricted facilities for implementing control systems for retractable undercarriages and canopies. All sequences are controlled by means of “TASKS”.
- Page 28 A single Task contains the following information: Value Range Task number 1 - 12 Extend or retract undercarriage UP » DOWN DOWN » UP Servo number 1 – 6 Servo START position 700μs - 2300μs Servo STOP position 700μs - 2300μs Start time 0 - 25.0s Stop time...
- Page 29 - GEAR UP - OUTPUT OFF: The door sequencer of the Mercury SRS includes a further auxiliary function which makes it possible to switch off a channel when the undercarriage is retracted. For example, the nosewheel should not deflect in parallel with the rudder when the undercarriage is in its retracted state, as this could jam the system mechanically;...
- Page 30 - SET ORIENTATION: this is the point where the installed position of the Mercury SRS in the model is established. As in the Setup Assistant, all you have to do after selecting this menu point is raise or lower the model’s tail.
- Page 31 Re-start the Testfly Assistant, and fly the model again to establish the optimum values. 9.7. Factory Reset This option can be selected if you wish to reset the Mercury SRS to the factory default settings. You will see a security query whose purpose is to prevent an accidental reset.
- Page 32 10. Specification Operating Voltage: 4.0V - 9.0V Battery type: 2s LiPo/LiIon, 2s LiFePo, 5s NiMH/NiCd, Current drain (ON): approx. 99mA Current drain (OFF): approx. 3μA Output voltage regulated: 5.9V and/or 7.4V Max. output current: Peak 2 x 20A Dropout voltage: 0.3V Signal resolution: 0.5μs...
- Page 33 11. Dimensions 12. Set contents - PowerBox Mercury SRS - OLED-Display - SensorSwitch - 3 Patchwires 3-pole, 200mm - 8 mounting screws - Operating instructions Optional: - GPS Sensor -33-...
- Page 34 That is why we are able to grant a 36 month guarantee on our PowerBox Mercury SRS from the initial date of purchase. The guarantee covers proven material faults, which will be corrected by us at no charge to you. As a precautionary measure, we are obliged to point out that we reserve the right to replace the unit if we deem the repair to be economically unviable.
- Page 35 For this reason we deny liability for loss, damage or costs which arise due to the use or operation of the PowerBox Mercury SRS, or which are connected with such use in any way. Regardless of the legal arguments...
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