Table of Contents WARNING: Read precautions and entire manual before first use. Keep manual nearby for future reference by current and future users. Precautions ........................1 1.1. Introduction ..................................2 1.1.1. Disclaimer ................................2 1.1.2. Warning ................................3 1.1.3. Definitions – Classifications of Safety Alerts ..................4 1.2.
Page 4
2.4. Controller ..................................34 2.4.1. Names of Parts and Functional Overview .................... 34 2.4.2. LCD Display ..............................36 2.4.3. SYSTEM Settings Menu: Screen Transition Diagram ............... 38 2.4.4. Status LED Indications ..........................39 2.4.5. Sounds ................................41 2.4.6. Extended Functionality (HDMI output and mobile device charging) ........42 2.5.
Follow the warnings in this manual. Failure to do so may result in personal injury or property damage. • Do not replace any part of this product without explicit permission from ACSL. In addition to the • replacement of parts, any repairs or modifications other than those specified by ACSL are not covered by the warranty.
Definitions – Classifications of Safety Alerts 1.1.3. In this manual, and on the product itself, the following classification of safety alert signal words and symbols is used in conjunction with the headings “WARNING”, “CAUTION” and “ADVISORY”. These symbols are deployed to ensure safe and proper use of the product and to prevent property damage and injury to the user or to others.
SOTEN is an unmanned aircraft designed specifically for industrial/official use, not for general consumer • use. SOTEN’s intended use is that it is to be flown manually by an experienced pilot, or autonomously along a • planned route using the controller and the ACSL TAKEOFF ground control application.
The main body of the aircraft (with the camera and battery installed) is dustproof and waterproof equivalent to IP43, but if rain or fog is observed or anticipated during flight, abort the flight. Limitations 1.2.3. Use of SOTEN must comply with the limits specified below. • Item Min.
TAKEOFF will bring the aircraft and controller up to date. It is not necessary to update a drone and/or controller with previous versions of TAKEOFF. Refer to the ACSL TAKEOFF ground control application User Manual for information on how to update such out-of-date firmware.
1.3. General Precautions Aircraft 1.3.1. Familiarize yourself with the orientation of the aircraft (which side is front and which side is rear) to avoid maneuvering in the wrong direction. Forward Class 1 Laser Product Do not touch the aircraft or battery terminals with wet hands. Doing so may result in electric shock.
Battery 1.3.2. Handle the battery carefully to avoid damage or leakage. Failure to do so may result in injury. Do not disassemble the battery. Doing so may cause fire or the release toxic substances. Do not use an unsuitable battery type. Doing so may cause fire.
Page 18
Precautions to prevent the spread of fire: When using SOTEN, take necessary measures such as having an appropriate fire extinguisher* • nearby in case of fire caused by damage to the battery. *ABC powder fire extinguishers are recommended. If the battery is damaged or deformed due to excessive shock, crash, etc., dispose of it properly •...
Battery Charger 1.3.3. Do not touch or unplug the charger with wet hands. Doing so may result in electric shock. Do not drop the charger or subject it to vibration, shock, or deformation. Doing so may cause fire or malfunction. Do not operate, store, or leave the charger in high temperatures, high humidity, places exposed to water, or in a car under the hot sun.
Controller 1.3.4. Do not heat the controller, use it near a fire, or incinerate. Doing so may cause overheating, ignition, damage, or malfunction. Do not drop the controller or subject it to vibration, shock, or deformation. Doing so may cause fire or malfunction. Do not charge, store, or leave the controller in high temperatures, high humidity, places exposed to water, or in a car under the hot sun.
1.4. In-Flight Precautions General Precautions 1.4.1. Pilots should wear helmets, protective goggles, long sleeves, and long pants. In addition, an emergency • evacuation area should be designated in advance. The flight area must be kept clear of people, including pilots, and third-party property. •...
Path 3: Reflection off the ground Possibility of runaway SOTEN is capable of position mode flight even with poor or no GPS signal reception using the three • on-board stereo cameras. However, flight may become unstable depending on the lighting conditions and scenery, especially in environments with poor or extremely bright lighting, reflective or low-contrast scenery, a lot of moving scenery, or a lack of close scenery.
Aircraft 1.4.3. Takeoffs and landings should be made on a flat, level surface. • Before powering on, place the aircraft on a flat, level surface. • During startup, do not bump or tilt the aircraft until startup is complete as this may interfere with the •...
If SOTEN is stolen, it may be used for illegal or unsafe nefarious purposes. Customers are requested to • make every effort to prevent theft. In the event that SOTEN is stolen, promptly file a report with the local police and contact your dealer.
Some studies have suggested that some biological effects might occur, but such findings have not been confirmed by additional research. SOTEN’s controller has been tested and found to comply with FCC radiation exposure limits set forth for an uncontrolled environment and...
1.7. Other Notes In the unlikely event of an accident, report to the FAA along with your dealer within 10 days. (Refer to the FAA website as per below.) When do I need to report an accident? | Federal Aviation Administration (faa.gov)
2.2. System Configuration System Configuration Conceptual Diagram 2.2.1. Remote ID Bluetooth ® GNSS Global Positioning System Signals 2.4 GHz wireless 2.4 GHz wireless (broadcast received) (not Wi-Fi) Pilot Observer controller controller *Requires purchase of an additional controller...
Cellular When equipped with an embedded cellular modem, a cellular connection may be used to connect the aircraft to the ACSL TAKEOFF ground control application (commands, telemetry, and video). *In Japan, this requires a subscription to either the NTT DOCOMO LTE Over-the- Air Usage Plan or the KDDI Smart Drone 4G LTE Package.
2.3. Aircraft Names of Parts and Functional Overview 2.3.1. TOP VIEW REAR VIEW RIGHT VIEW LEFT VIEW BOTTOM VIEW B : LEFT VIEW A : RIGHT VIEW C : REAR VIEW D : TOP VIEW E : BOTTOM VIEW...
Page 38
name Feature Motor Rotates the propeller. Propeller Generates lift and propulsive force. Supports the motors and propellers. Can be folded for transportation and storage. Stereo cameras Detect obstacles and the relative motion of the aircraft. Navigation lights LED lights mounted on the tip of the arms improve visibility of the aircraft's attitude and orientation.
Overview of the Visual System 2.3.2. The aircraft is equipped with 3 stereo cameras mounted on front, top and bottom. These stereo cameras are used to measure the distance to obstacles to avoid collision, and for visual odometry. Visual odometry is an advanced computer vision algorithm that deduces the motion of the aircraft relative to the surrounding environment from the images captured by the onboard stereo cameras.
Page 40
• Obstacles less than 20 cm (8 inches) wide may not be detected. • Always keep the camera and sensor lenses clean. Dust, dirt, and other contaminants will reduce sensitivity. Over time, the heading (yaw angle) will slowly drift. In this case, you will need to use the controller’s •...
Page 41
Distance may not be measured correctly due to the influence of infrared light from the sun or other • sources of infrared light. The top sensor is not suitable for outdoor use. • When flying over surfaces that reflect sunlight, such as water or shiny metal, distance may not be •...
2.4. Controller Names of Parts and Functional Overview 2.4.1.
Page 43
Name Feature Flight mode switch Switch to select the flight mode. Gimbal control button L Tap to point the camera forward (both pan and tilt). Press and hold to point the camera straight down (both pan and tilt). Gimbal Control wheel L Used to adjust the camera tilt.
LCD Display 2.4.2. name Feature Aircraft status display The status of the aircraft is indicated by icons (nos. 13 to 16). Notification symbol Displays an icon to indicate whether a notification is a warning, caution, or alert. Number of GPS satellites Indicates the number of GPS satellites from which signals are being received.
Page 45
Go-home indication This icon is displayed when the aircraft is in go-home mode (autonomously returning to the takeoff point). Auto-landing indication This icon is displayed when the plane auto-landing mode (autonomously landing at the current location). Auto-takeoff indication This icon is displayed during auto-takeoff. Pause indication This icon is displayed when pausing (entering a hover) from autonomous motion of the aircraft.
SYSTEM Settings Menu: Screen Transition Diagram 2.4.3. With the controller powered off, press the power button while holding down the Enter button to display the following system setup screen.
Status LED Indications 2.4.4. The status of the controller is indicated by the color and flashing pattern of the status LED as described below. Solid Blinking Undulating Undulating Blinking brightness brightness (unlit) (unlit) (unlit) Slowly lighting up 1.0 sec 2.0 sec 1.0 sec 2.0 sec Status Status LED...
Page 48
Status Status LED Communication with the aircraft is interrupted or not yet established Solid red Charging Solid orange Charging suspended due to low temperature Blinking Orange Lesson mode: teacher Solid purple Lesson mode: student Undulating purple...
Sounds 2.4.5. The various sounds that the controller produces to draw the attention of the pilot are described below. It is important that you understand what each sound means so that you are adequately alerted to any safety issues. When a warning is issued ...
For detailed information on supported standards, etc., please refer to the instruction manual for the • product in question. Damage to or malfunction of SOTEN resulting from the use of the USB Type-C ® adapter is not •...
Functional Overview 2.5.1. The ACSL TEKEOFF ground control application is intended for use only with ACSL SOTEN. It offers the ability to monitor the telemetry and video that is broadcast from the aircraft, manage aircraft settings, issue commands to the aircraft, set geofences, plan and execute autonomous flights, review prior flights, and more.
Battery Features 2.6.2. The battery is equipped with an embedded battery management system (BMS). The features of the BMS enhance safety during use. Monitoring ◼ To maximize safety, the BMS continuously monitors the battery’s condition (output, remaining battery charge, temperature, etc.), and logs occurrences of any conditions that are outside of the normal operating range.
Battery Modes 2.6.3. The BMS may switch the battery into the following modes to enhance battery safety. Sleep mode ◼ The BMS puts the battery in sleep mode after the aircraft is powered off. In this mode, the BMS monitors battery condition (e.g., temperature) and records monitoring values at regular intervals for safety determination.
Basic Battery Operation 2.6.4. Pressing the power button initiates the BMS self-diagnostics. The self-diagnostics take about 2 seconds, and upon successful completion, the remaining battery charge is displayed. LED indication during self-diagnostics • Status LED Battery level LED Red light Green light LED indication of remaining battery charge •...
Page 56
Status LED Battery level LED Blinking for 10 sec. If the BMS determines that the battery is nearing the end of its life, the status LED will continue to blink and the remaining battery charge will be displayed. LED indication when battery life is nearing end of life •...
Page 57
If a temporary anomaly such as communications timeout (communication failure) or overcurrent is detected when connecting to the aircraft or charger, the status LED will remain lit and the remaining charge will be displayed. LED indication in case of battery failure •...
2.7. Battery Charger Indications 2.7.1. The status LED and the remaining battery LEDs light up (blink) according to the charging mode, and charging status. See Section: 4.3.2: Battery Charging Modes. ➔ Battery charger Battery Status LED Do not connect the battery to the charger while the battery status LED is on. Charging may not start •...
• proprietary signal processor. For more information about the product and how to handle it, • please refer to the CX-GB100 User Manual and the ACSL TAKEOFF User Manual. Display switching button Example of full screen camera display Example of full screen map display...
3.1. Initial Battery Activation Battery charger Battery Batteries are shipped from the factory in shutdown mode and will not respond to the power button. • To activate a new battery, connect it to a charger. • See Section 4.3: “Battery Charging.”. ➔...
3.2. Installing the TAKEOFF Ground Control Application The ACSL TAKEOFF ground control application is available for Android mobile devices by downloading the application from the ACSL Soten product website or from Google Play. ・ Firmware updates for the SOTEN controller, controller, communication module, and battery are all performed using the ACSL TAKEOFF ground control application.
3.3. Controller Preparation Attach the mobile device to the mobile device holder. Mobile device holder Mobile device Attach the mobile device to the mobile device holder so that it does not interfere with the buttons on the mobile device. Failure to do so may result in damage to or malfunction of the mobile device. Connect the mobile device to the controller via USB Type-C ®...
If necessary, charge the controller in advance. For information on how to charge the controller, see Section 4.4: “Controller Charging.” . ➔ 3.4. Aircraft Preparation Deploy the arms of the fuselage. Open the arms firmly until they click into place. Do not install the propellers yet. click click •...
Page 65
When installing the camera and battery, be careful not to pinch your hands or fingers. Failure to do so may result in injury. When installing the camera, do not wear gloves, etc., but be sure to check the camera is properly •...
Page 66
Lasers operating with a wavelength outside the visible range (class 1 lasers) are emitted from two infrared sensors located on the top and bottom of the aircraft when the aircraft is powered on. Do not look closer than necessary or look into the lenses of the sensors when the aircraft is powered on. The status LED will illuminate briefly immediately upon startup and will begin to blink continuously once the aircraft has completed its startup procedure.
3.5. First Connection (binding) Aircraft-Side Operation 3.5.1. Open the binding button cover on the fuselage. Binding button cover Do not use sharp tools to open the cover. Doing so may result in damage to the aircraft. Press and hold the binding button on the fuselage until all four position LEDs at the tips of the arms are blinking red.
Page 68
Move the cursor to “BIND” by operating the left stick on the controller and press the Enter button. *Make sure that the aircraft is in binding standby mode before executing (see Section 3.5.1: Aircraft-Side Operation). When RUN is displayed, press the Enter button again to execute binding. Binding may take 1-2 minutes due to the encryption process.
Page 69
Verify that the controller’s LCD screen displays the aircraft’s battery level and other information. SOC: State of Charge...
3.6. Stick Mode Settings The controller stick control assignments can be selected from four control modes. • Always check the control mode before flying to ensure that the stick operation assignments are the same • as those you are accustomed to using. First-time users should carefully check the stick operation assignments according to the control mode before making settings.
Changing Stick Mode 3.6.2. With the controller powered off, press and hold the power button while pressing the Enter button on the controller. The system settings menu appears. System settings menu Enter button Power button Move the cursor to “MODE” by operating the left stick on the controller and press the Enter button. Move the cursor to the desired control mode and press the Enter button.
Confirming Stick Mode 3.6.3. Check the operation of the stick mode with the propellers removed. Failure to do so may result in injury. Starting the motors Holding the throttle stick down and the yaw stick to the left releases the motor lock and the motors begin to turn.
Page 74
*This combination of stick inputs will not cause the motors to stop while in flight. In the case of mode 1 In the case of mode 2...
3.7. Propeller Installation Turn off the power to the aircraft. Be sure to turn off the power to the aircraft before attaching or detaching the propellers. Failure to do so may result in injury. There are two types of propellers, clockwise rotating and counterclockwise rotating. Like propellers are installed at opposite ends.
3.8. Camera Initialization Prepare a microSD card for image and video storage. The microSD card must meet the following criteria • *Refer to the CX-GB100 User Manual for the recommended SD card. ✔ UHS Speed Class ・・・・・・・・・・・・・・U3 ✔ Video speed class ・・・・・・・・・・・・・V30 or higher ✔...
4.2. What You Need for Flight The following protective gear and apparatus should be readied prior to flight: • ✔ Helmets ✔ Protective goggles *recommended ✔ Gloves of a thickness that does not interfere with manipulating the controls *recommended ✔ Long-sleeved clothing (top and bottom) *recommended ✔...
4.3. Battery Charging Charging Method 4.3.1. The status LED and the remaining battery LED light up (blink) according to the charging mode, and • charging starts. Battery charger Battery Status LED To maintain battery health, be sure to fully charge the battery before use. Battery Charging Modes 4.3.2.
Page 81
50-74% (50-74%) Blinking Green light 75-99 Green light 100%. Charge standby mode ◼ In the charge standby mode, charging is suspended because the BMS has detected that the internal temperature of the battery is outside the safe temperature range for charging. Charging is resumed when the temperature returns to the safe range for charging.
Chargers that are not compliant with the USB BC standard (Battery Charging Specification 1.2) may • not charge the controller properly. The dedicated USB Type-C ® charging cable that is included with SOTEN may not work with some • commercially available USB PD chargers that are capable of fast charging.
LCD Display While Charging (only when powered on) 4.4.2. When the controller is powered on while charging, the LCD screen displays the charging status. (1) Charging method (2) State of charge (4) Charging speed (3) Supply limit display voltage/current to built-in About the charging method The controller identifies the charging method of the charger and displays the name of the charging method;...
Page 84
Charging speed limit indication The letter “L” is displayed when the charger has reached the upper limit of the power it can supply and the controller is limiting the current consumed to protect the charger. Note that this will also be displayed when the input power has reached the maximum allowable for the active charging method, regardless of whether the charger is capable of supplying more power.
5.2. Pre-Flight Battery Inspection If any abnormality is found during the battery inspection, do not use it for flight. Contact your dealer. Confirm Level of Charge 5.2.1. Ensure that the battery is fully charged (100%). • See Section 4.3: Battery Charging. ➔...
5.3. Pre-Flight Aircraft Inspection If any abnormality is found during the aircraft inspection, do not fly the aircraft. Contact your dealer. Pre-flight inspections of the aircraft should be performed with the aircraft powered off. Inspect Exterior 5.3.1. Verify that there are no cracks, scratches, or other damage or deformation on the exterior of the aircraft. •...
Inspect Air Intake 5.3.4. Verify that there is no debris adhering to the air intake port, which is located at the front of the aircraft, • just under the camera terminals. Perform the inspection with the camera removed from the aircraft. air intake Inspect Motors 5.3.5.
Inspect Propeller Mounts and Arms 5.3.6. Verify that there are no cracks or deformation on the arms. • Verify that there are no cracks, chips, deformation, debris, or other contamination of the propeller mounts. • Verify that the springs attached to the motor shaft are not deformed or contaminated with debris. •...
Page 91
An arm that is not fully open may move due to the normal accelerations of the motor during flight, severely impairing the ability of the aircraft to control its attitude, possibly resulting in a crash.
Confirm Camera and Battery Lock Status 5.3.8. The camera release button has a lock confirmation line that visually indicates the lock is engaged. If this • line is not visible, then the lock is not fully engaged. The battery release button does not have a lock confirmation line, but lock engagement can be confirmed by verifying that the bottom of the button is aligned with the aircraft structure behind it.
5.4. Pre-Flight Propeller Inspection If any abnormality is found with a propeller during inspection, do not use it for flight. Contact your dealer. Inspect Propellers 5.4.1. Check the propellers for cracks, chips, deformation, dirt, or other contamination. • Ensure that there is no damage or wear on the blade tips. •...
5.5. Pre-Flight Controller Inspection If any abnormality is found during the controller inspection, do not use if for flight. Contact your dealer. Confirm Level of Charge 5.5.1. Ensure that the controller battery is fully charged. • Refer to Section 4.4: Controller Charging.
Confirm Signal Strength 5.5.4. Verify the lack of wireless interference between the controller and drone by performing the following test • procedure. With the antennas folded in the stowed position, confirm that the camera video stream can be received smoothly at approximately 50 m (160 ft) from the aircraft. Remember to deploy the antennas after completing the signal strength check.
Confirm Antenna Position 5.5.6. The two antennas must be deployed so that they are in parallel. • Antennas that are folded or not deployed in parallel may cause unstable communication between the aircraft and the controller. The 2.4GHz band used for communication between the controller and the aircraft is capable of high- •...
When starting up the gimbal, place the aircraft on a flat, level surface. Confirm Video Transmission 5.6.2. Connect the ACSL TAKEOFF ground control application to the controller and confirm that the live video • feed is displayed. Camera image...
6.1. Test Run Verify Motor Start and Stop Procedure 6.1.1. Before the first flight of the day, briefly start then stop the motors to confirm correct setting of the stick • mode and operation. Refer to Section 3.6.3 Confirming Stick Mode.
While keeping the aircraft flat, lift the aircraft and rotate it 360-degrees around the yaw axis in about 2 • to 3 seconds. Verify that the “AZIMUTH ERROR INCREASED” message is not displayed on the controller or ACSL • TAKEOFF ground control application.
Page 101
75-100% The ability to take off (i.e. the ability to increase motor speed above idle) is inhibited when the aircraft’s battery level is 13% or lower. See below for dealing with low battery. Continually monitor the battery level of the aircraft during flight. •...
Check the Status LED 6.1.4. If any abnormality is found during the inspection, do not fly the aircraft. Contact your dealer. With the battery installed in the aircraft, when the power button is pressed the status LED will display the ➔...
This mode uses GPS to autonomously return to the takeoff location. This Switch position: MAN, POS, mode is entered by pressing either the go home button in the ACSL TAKEOFF ground control application or the go home button on the controller.
Auto-takeoff This mode uses GPS or visual odometry to autonomously take off. This Switch position: AUT mode is entered by pressing the takeoff button on the ACSL TAKEOFF ground control application. Idling The aircraft has transitioned from the powered-on state to the flight- ready state and the motors are rotating at the minimum rotational speed.
Page 105
Controller flight mode switch TAKEOFF display Aircraft status LED Manual Blinking yellow...
Page 106
Maneuvering the aircraft using the controller Takeoff • After starting the motors, slowly manipulate the throttle stick upward from the center position to • take off. Hovering • The pilot has direct control of aircraft attitude. The aircraft will not hold its position. •...
In position (POS) mode, the aircraft relies primarily on GPS signals (when available) for position control. Switch to manual (MAN) mode immediately if the GPS icon in the ACSL TAKEOFF ground control application turns red, if the aircraft’s status LED flashes red, or if the aircraft drifts or otherwise moves in a way that seems abnormal.
Page 108
Maneuvering using the controller Takeoff • After starting the motors, slowly raise the throttle stick upward from the center position and take • off. Hovering • The pilot has direct control of the aircraft’s position. • The position of the aircraft can be adjusted by manipulting the roll and pitch sticks. •...
This section describes basic operations in the auto (AUT) mode. This is the mode that should normally be • used when it is desired to control the location of the aircraft via the ACSL TAKEOFF ground control application. GPS or visual-odometry are used to measure the aircraft's position and speed.
Page 110
When the controller's flight mode switch is set to the “AUT” position, a red checklist button will appear • in the ACSL TAKEOFF ground control application. *For details on the checklist, please refer to the ACSL TAKEOFF ground control application user manual. Press the checklist button to display the preflight checklist. •...
Collision avoidance ✓ ✓ Camera/gimbal operations ✓ ✓ ✓ Forced stop ✓ ✓ ✓ Functions that may be executed from the ACSL TAKEOFF ground control ◼ application Function Manual (MAN) Position (POS) Auto (AUT) Auto takeoff ✓ Auto landing ✓...
Allow the controller sticks to remain in the center position. • Set the controller mode switch to atuo (AUT) mode and tap the takeoff button on the ACSL TAKEOFF • ground control application to execute an automatic take off on the spot.
Land on a flat, level surface. Pause/Resume 6.3.5. Press and hold the Pause button on the controller or tap the Pause button on the ACSL TAKEOFF ground • control application to pause the function currently being executed. In manual (MAN) mode and position (POS) mode, it is only possible to initiate a pause while executing a •...
Section 7.1.4 Emergency Menu on pg. 126). D-pad control is automatically initiated while in auto (AUT) mode, if no flight plan has been uploaded to the aircraft, or when the flight plan is complete. The D-Pad allows the pilot to manually control the drone from within the ACSL TAKEOFF ground control •...
Press and hold the Go Home button on the controller or tap the Go Home button from the Command • Menu in the ACSL TAKEOFF ground control application to execute the Go Home function. Upon execution, if the aircraft is at an altitude that is lower than 10 m (33 ft) above the takeoff location, then it will immediately climb to that altitude.
Press and hold the Go to Transmitter button on the controller or tap the Go to Transmitter button from • the Command Menu in the ACSL TAKEOFF ground control application to execute the Go to Transmitter function. The aircraft will maintain its altitude and proceed directly to the nearest location that is approximately 15 m (49 ft) from the controller, and then initiate a hover.
In Go Home mode, commands may be issued from the command menu in the ACSL TAKEOFF • ground control application. For details, check the ACSL TAKEOFF ground control application User Manual. Obstacle Avoidance 6.3.9. When the controller’s Collision Avoidance switch is set to the ON position, the aircraft will climb to avoid •...
(The distance to the detected obstacle is displayed on the controller and the ACSL TAKEOFF ground control application.) When an obstacle is detected to be closer than the collision avoidance distance, the aircraft will no longer •...
• control buttons and sliders on the ACSL TAKEOFF ground control application. *For details on camera/gimbal operation with the ACSL TAKEOFF ground control application, refer to the ACSL TAKEOFF ground control application user manual. Upon startup, the gimbal performs a self-calibration. If the gimbal touches the ground or any other •...
Page 120
Mini Camera Display Example of the camera full screen view Example of the map full screen view The camera control buttons at the bottom-right of the camera full screen view are used to perform the • following functions. Selecting the shooting mode: video, still image, and interval still image. •...
• the ACSL TAKEOFF ground control application. *For details on how to create a flight plan and upload it to the aircraft, please refer to the ACSL TAKEOFF ground control application user manual. Complete the preflight checklist in the ACSL TAKEOFF ground control application.
• using the ACSL TAKEOFF ground control application. *For details on how to create a geofence and upload it to the aircraft, please refer to the ACSL TAKEOFF ground control application user manual. The user-defined geofence function is only enforced in position (POS) and auto (AUT) modes.
Page 123
ACSL TAKEOFF ground control application. When the aircraft is located in a no-fly zone of the user-defined geofence, the controller and ACSL TAKEOFF ground control application will display “No-fly area” notification. Starting the motors while in position (POS) mode or auto (AUT) mode will be inhibited.
• using the ACSL TAKEOFF ground control application. *For details on how to set the altitude limit, please refer to the ACSL TAKEOFF ground control application user manual. The altitude limitation is only enforced in position (POS) and auto (AUT) mode.
6.4. Controller Multicast About Multicast 6.4.1. This product is equipped with a multicast communication function. This function allows up to three controllers to be bound to one aircraft to simultaneously receive telemetry and video from the aircraft. While pilot authority is granted to only one controller at a time, it is possible to monitor the telemetry and video with up to two other controllers as long as the radio signal from the aircraft is within range.
Fail-Safe when Multicasting 6.4.2. A fail-safe function is provided to allow transfer of pilot authority to an observe in the event of a loss of communication between the aircraft and the pilot controller. When the observer's controller displays “TO BE PILOT PUSH ENTER,”...
6.5. Lesson Mode (Japan only) Flight training can be performed using a pair of controllers that are equipped with 920 MHz training radios • (Japan only). To do this both controllers must be set to “lesson mode”. In the lesson mode, one controller is set to teacher mode and the other to student mode. The teacher can •...
The aircraft is pre-programmed with a regional market geofence to prevent use outside the boundaries of • the region of authorized use. For example, ACSL SOTENs that are sold in the United States contain a regional market geofence to prevent use outside of the United States and U.S. Territories.
Page 130
complying with all laws, rules and regulations applicable to the operation of the aircraft near national borders and in restricted areas.
Immediately after confirming the safety of the area directly under the aircraft, use the “forced stop” function of the controller or ACSL TAKEOFF ground control application to force the motors to stop and the aircraft to drop on the spot.
If the accuracy of GPS and visual odometry degrade during flight, the status LED on the aircraft will flash • red and a message will appear on the ACSL TAKEOFF ground control application and controller LCD display screen. Refer to Section 7.1.11: Indications of an Abnormality.
◼ Select one of the following operations Piloting with the ACSL TAKEOFF ground control application. ① The Emergency Menu (6 buttons) will appear automatically on the ACSL TAKEOFF ground • control application. Select the following normal or emergency operating procedure.
Page 135
Emergency Menu-3 (When an electrical abnormality is detected during flight in MAN mode) ② After switching the controller’s flight mode switch to another mode, return to the originally selected mode and continue piloting with the controller. Feature Controller Description button Normal Go home Go home...
Communications Disruption 7.1.5. When the SOTEN is in flight operation and the distance between the aircraft and controller is within the communication distance (SOTEN Operation Manual “1.2.3 Limitations“), but reception is interrupted (communication interruption) or the camera view image on the TAKEOFF application is interrupted and “Waiting for video“...
Page 137
Adjusting the direction of the antenna and at the same time moving the pilot’s standing position relative • to the aircraft will help to get out of areas prone to signal interruption and make it easier to recover radio communication. (See note). Communication interruption occurred Move Restoration of control...
Page 138
Effects of multipath-induced fading Radio waves are emitted from the controller’s antennas in all directions (with varying amplitude). If there is no obstruction, then some waves will reach the aircraft in a straight line (direct waves). Some other waves may reach the aircraft by bouncing off the ground, trees, buildings, uneven terrain, other objects, etc. (reflected waves).
Page 139
Figure . Conceptual diagram of multipath-induced fading A location where multipath waves completely cancel each other out is called a “null point”. If the aircraft happens to move into a null point of the controller, then the signals for the controller will be too weak to be received, resulting in a communications disruption.
(ELS) or takeoff point in order to land the aircraft safely. Please refer to the ACSL TAKEOFF ground control application user manual for the ELS setting method. •...
Emergency Menu Emergency Landing button Command button Emergency Landing Site (ELS) Type ◼ type travel route Direct Moves along a straight path to the ELS while descending. • Via an Moves along a straight path relative to the ELS while maintaining the current •...
Page 142
Possible situations requiring a forced stop ◼ When an unintended movement takes the aircraft out of the safety zone • When there is a possibility of coming into contact with people or property • When people or objects are approaching rapidly •...
Even after the emergency button is pressed, the motors will continue to rotate with inertia and will not stop instantly. • Familiarize yourself with the location of the emergency button in the ACSL TAKEOFF ground control application before flight. •...
If the aircraft's position and speed cannot be measured by visual odometry, the aircraft's position will not be displayed on the ACSL TAKEOFF ground control application. The pilot should continuously, visually track the aircraft and be prepared to visually navigate the aircraft at any time.
Blinking purple (Auto takeoff and landing) ACSL TAKEOFF ground control application A message will appear on the right side of the screen. For details, please refer to the ACSL TAKEOFF • ground control application user manual. Message Controller LCD screen The center of the controller’s LCD screen displays warning messages and other information about the...
Notifications Stick Calibration 7.1.12. If the warning message “INIT NEUTRAL FAILURE” appears even though the controller's left and right sticks are in the center position, perform stick calibration. If you are unable to start the motors, even after successfully completing the troubleshooting steps described in Section 9.1.1: Aircraft Troubleshooting, it may be an indication that the sticks are out of calibration.
Page 147
When “RELEASE STK” appears, release the left and right sticks and press the Enter button. Wait until “ROTATE STK” is displayed. When “ROTATE STK” is displayed, rotate the left along the limits of its range of motion at least three times at a speed of about 5 seconds per revolution.
Page 148
Move the cursor to “CHECK” by operating the left stick on the controller and press the Enter button. A screen will appear on which you can check the stick position numerically, so be sure to check that it is “0000” with your hands off the sticks. display Contents Details...
Warning Messages 7.1.13. The following pages list all of the warning messages that can appear in the ACSL TAKEOFF ground control • application and on the controller. Also included is an explanation and required actions. When a warning message is issued, the controller alerts the user with sound and vibration.
Page 150
The ability to start the motors is inhibited. Make sure that the mobile • device that is running the ACSL TAKEOFF ground control application is equipped with a GPS, has location services enabled, and is connected properly to the controller. If the warning persists, discontinue use and contact your dealer.
Page 151
Warning message Explanation and required action Nav calculation error There is an abnormality in the speed or navigation calculations used in auto mode. Restart the aircraft. *If the warning message appears again, discontinue use and contact your dealer. On ground: The ability to idle is inhibited. In flight: Switch to manual mode and immediately land the aircraft in a safe location.
Page 152
In flight: Immediately land in a safe location. Warning message Explanation and required action Barometer data The quality of the barometric pressure data has deteriorated. unreliable Restart the aircraft. *If the warning message appears again, discontinue use and contact your dealer.
Page 153
The firmware versions of the flight computer and the visual odometry computer mismatch do not match. Refer to the ACSL TAKEOFF ground control application instruction manual to update the firmware. On ground: The ability to idle is inhibited in position (POS) or auto (AUT) mode in a non-GPS environment.
Page 154
Warning message Explanation and required action Flight Restricted high The load on the battery is abnormally high (Level 1). Take the following actions. load • Manual (MAN) mode Climb speed is limited but horizontal speed is not limited. Decelerate immediately. If warning persists: Land the aircraft in a safe place as soon as possible.
Page 155
Warning message Explanation and required action Emergency mode ESC Motor RPM is abnormally high (level 2). The aircraft will transition to speed emergency mode. Immediately land the aircraft in a safe location. If motor RPM remains high, an emergency landing will occur. (All ➢...
Page 156
Warning message Explanation and required action Battery Memory Error The battery software has detected an anomaly. Land in a safe place immediately. After landing, turn off the battery power. If the warning appears again during operation, discontinue use and contact your dealer.
Caution Messages 7.1.14. The following pages list all of the caution messages that can appear in the ACSL TAKEOFF ground control • application and on the controller. Also included is an explanation and required actions. When a warning message is issued, the controller alerts the user with sound.
Page 158
Caution message Explanation and required action No-fly area The aircraft position is outside of a user-defined geofence or altitude limit. Check the geofence. On ground: The ability to start the motors is inhibited. • The aircraft may not have a GPS location fix due to poor GPS reception. •...
Page 159
Caution message Explanation and required action No data from GPS There is an error in communication between he flight controller and the GPS sensor. Restart the aircraft. *If the caution message appears again, discontinue use and contact your dealer. On ground: The ability to idle is inhibited in position (POS) or auto (AUT) mode. In flight: Manual (MAN) mode •...
Page 160
Caution message Explanation and required action No data from GCS There is no communication between the ACSL TAKEOFF ground control application and the aircraft. Check the connector connection between the mobile device and the controller. Manual (MAN) or position (POS) mode •...
Page 161
Caution message Explanation and required action Radio not responding There is an error in communication between the aircraft and the controller. On ground: Restart the aircraft and controller. In flight: Land the aircraft in a safe place as soon as possible. Manual (MAN) or position (POS) mode •...
Page 162
Caution message Explanation and required action No data from vision The flight controller is not receiving any data from the vision computer. If the unit caution persists, restart the aircraft. *If the caution message appears again, discontinue use and contact your dealer. On ground: The ability to idle is inhibited in position (POS) or auto (AUT) mode in a non-GPS environment.
Page 163
Caution message Explanation and required action Vision performance Vision has a low frame rate. Please restart. error On ground: The ability to idle is inhibited in position (POS) or auto (AUT) mode in a non-GPS environment. In flight: -Manual mode Continuation of flight is possible.
Advisory Messages 7.1.15. The following pages list all of the advisory and informational messages that can appear in the ACSL • TAKEOFF ground control application and on the controller. Also included is an explanation and required actions. Advisory message Explanation and required action Camera connected No camera is detected.
Messages Displayed on the Controller 7.1.16. Warning messages ◼ The following lists all of the warning messages that can appear only on the controller. Also included is an • explanation and required actions. When a warning message is issued, the controller alerts the user with sound and vibration. •...
Page 166
Caution messages ◼ The following lists all of the warning messages that can appear only on the controller. Also included is an • explanation and required actions. When a warning message is issued, the controller alerts the user with sound and vibration. •...
8.1. Post-Flight Inspection Perform the following inspections after each flight. • When flying, dust, insects, pollen, and other microscopic debris adhere to the aircraft. If left unattended, • these particles can cause chemical changes that lead to deterioration and discoloration of parts. To prevent these problems, clean and care for the equipment after each flight, and check each part for •...
8.2. Post-Flight Battery Inspection If the battery has experienced a severe impact, there is a risk of it swelling or self-igniting. In such cases, discontinue its use immediately, place it in a fire-safe place away from flammable materials and ensure it has stabilized before proceeding further.
8.3. Post-Flight Aircraft Inspection If the aircraft experienced a crash or other impact during flight, do not attempt to fly it again. • Contact your dealer. If any abnormality is found during the aircraft inspection described in the following pages, do not •...
8.4. Post-Flight Propeller Inspection If the aircraft experienced a crash or other impact during flight, discontinue the use of all propellers • that were installed. Separate them from propellers that are in good conditions, and dispose of them. If any abnormality is found during the propeller inspection, do not use them for flight. Contact your •...
8.5. Post-Flight Controller Inspection If the controller is dropped or experiences impact during use, discontinue use and contact your • dealer. If any abnormality is found during the controller inspection described in the following pages, • discontinue use. Contact your dealer. Clean Controller 8.5.1.
8.6. Storage Ensure that the aircraft, battery, and controller are in the recommended condition for storage, as • described in Section 8.1: Post-Flight Inspection. In addition to the recommended storage temperatures listed in Section A-1-1 Specifications, avoid • storage locations with a fire hazard, high humidity, dust, and weak shelving. To prevent theft, store the aircraft, batteries, and controller in separate, lockable locations.
To maintain maximum performance, it is recommended that periodic inspections be performed on the • aircraft and controller. At the time of repair or periodic inspection, the SOTEN Diagnostics Tool is used at a designated • maintenance facility to check the accumulated flight time and inspect the functions of onboard equipment to identify areas in need of overhaul or repair.
Page 175
In addition, repeatedly powering the aircraft on and off following a malfunction could lead to the on- board flight logs of the malfunction event, which are necessary for analysis, to be overwritten, making it difficult for ACSL to determine the cause of the malfunction.
• If there are batteries, cameras, or other item that cannot fit in the carrying case, forcing them in may result in damage to these items or to SOTEN. Prepare separate packaging for these items. • For third-party equipment, such as an anemometer, do not include them in the shipment as they may be lost.
After the transfer of this product, after-sales support, including the notification of urgent service bulletins, • will be provided to the new customer through your distributor. Since this product is an industrial unmanned aircraft, ACSL will not provide any after-sales support if the • product is transferred to an individual customer.
8.10. Disposal and Recycling When this product is disposed of, it is classified as industrial waste. If the product is improperly dumped or disposed of as general waste, you will be subject to punishment according to the local regulations. Disposal of airframe and controller 8.10.1.
Cannot take off automatically. Set the controller flight mode switch to the “AUT” position. • (auto (AUT) mode) Complete the preflight checklist on the ACSL TAKEOFF • ground control application. Ensure that the throttle stick is in the center position.
Page 181
• (manual (MAN) mode) control. Changes in air pressure near the ground, etc., may affect throttle operation. Select auto-landing on the controller or ACSL TAKEOFF • ground control application. I can't land. This product uses a barometric pressure sensor for altitude •...
Controller Troubleshooting 9.1.2. Issue Action The controller does not respond when Check if the controller temperature is appropriate. • plugged into a USB charger. The charging port is located on the bottom of the controller. • Connecting a charger to the data communication port on the top of the controller will not recharge the battery.
Battery Troubleshooting 9.1.3. Issue Action The battery does not respond at all If you have more than one battery, check that the charger is not when plugged into a charger. defective. If the charger is defective, contact your dealer immediately. The status LED is lighting or flashing Please contact your dealer as soon as possible.
A Appendix Specification ······················································································································································ 177 Change History ················································································································································· 184...
A-1 Specifications A-1-1 Specifications Aircraft Model L14 (without LTE) L22 (equipped with LTE) Dimensions When arms are Overall length 560 mm / width 637 mm / height 153 mm extended (Overall length 22.0” / width 25.1” / height 6.0”) (including propellers) Arms retracted Overall length 363 mm / width 162 mm / height 144 mm (Overall length 14.3”...
Page 186
Controller Built-in battery nominal voltage 7.2 V Rated current capacity 5,000 mAh Rated energy capacity 36.0 Wh Dimensions 194 mm x 129 mm x 84 mm (7.6” x 5.1” x 3.3”) Weight ≈ 500 g (1.1 lbs) Mobile device port USB 2.0 Full Speed Charging standards USB BC (Battery Charging Specification 1.2)
Page 187
Controller Maximum transmission 100 m (330 ft) distance between training (open area with no radio interference and good visibility) radios *2...
Page 188
High-Capacity Battery (aircraft) Nominal voltage 23.1 V Maximum charge voltage 26.4 V Rated current capacity 4,075 mAh Rated power capacity 94.1 Wh Dimensions Overall length 107 mm / width 75 mm / height 53 mm (Overall length 4.2” / width 3.0” / height 2.1”) Weight ≈...
Page 189
Battery Charger Voltage 100 to 240V, 2A, 50 to 60Hz Rated output 26.4V @ 3A, 5V @ 2A 33.6V @ 2.4A, 5V @ 2A, 90W total maximum Wireless Communications Controller Communication frequency 2,412 to 2,477 MHz band Power 0.009 W/MHz Bandwidth 14 channels, 5 MHz spacing Modulation...
Manufacturer Information Manufacturer ACSL Ltd. Hulic Kasai Rinkai Bldg. 2F 3-6-4 Rinkai-cho, Edogawa-ku Tokyo 134-0086, Japan For individual questions, please contact the distributor listed on the back cover of this manual. Specifications are subject to change without notice due to product improvement.
Need help?
Do you have a question about the SOTEN and is the answer not in the manual?
Questions and answers