dji AGRAS T50 Agricultural Drone Camera User Guide
- June 1, 2024
- DJi
Table of Contents
AGRAS T50
Quick Start Guide
v1.0
AGRAS T50 Agricultural Drone Camera
https://us-ag2-api.dji.com/app/download
Charge to activate the internal battery of the remote controller before using
for the first time.
It is recommended to purchase the DJI 65W Portable Charger or USB PD3.0
chargers.
Dongle related functions are
not supported in some countries or regions. Comply with the local laws and
regulations.
Check battery level:
press once.
Power on/off: press and then press and hold.
Make sure the remote
controller and aircraft is powered on. Follow the prompts to activate
(internet connection is required).
Mode 2
- Start/stop motors: perform combination stick command and hold for two seconds.
- Takeoff: push the left control stick (Mode 2) up to take off.
- Landing: push the left control stick (Mode 2) down until the aircraft lands. Hold for three seconds to stop the motors.
In order for the aircraft to automatically take off and perform an operation, it is recommended to create a plan for a field and select an operation before takeoff. Refer to the Starting Operations section for more information. For other scenarios, takeoff and land manually.
Using the T50
Getting Ready for Take off
A. Place the aircraft on open, flat ground with the rear of the aircraft
facing toward you.
B. Make sure that the propellers are securely mounted, there are no foreign
objects in or on the motors and propellers, the propeller blades and arms are
unfolded, and the arm locks are firmly fastened.
C. Make sure that the spray tank and flight battery are firmly in place.
D. Power on the remote controller, make sure that the DJI™ AGRAS™ app is open,
and then power on the aircraft. Go to the home screen in the app and tap Start
to enter Operation View. Make sure that there is a strong signal (the GNSS
icon or RTK icon on upper right corner of screen is white). Otherwise, the
aircraft cannot take off.
- RTK positioning is recommended. In the app, go to Operation View, tap and then RTK to select a method for receiving RTK signals.
- DJI Cellular Dongle is recommended for internet connection. In the app, go to Operation View, tap and select Network Diagnostics. The cellular dongle and SIM card are functioning properly if the status of all the devices in the network chain are displayed in green.
Starting Operations
Users can perform mapping operations in the operating area using the DJI Agras app and receive an HD map via offline reconstruction using the remote controller, then plan a field on the HD map for Route operations. DJI Agras provides multiple methods to add points. The following description uses Route Mapping and Crosshair as an example.
Power on the remote controller and then the aircraft. Enter Operation View in
the DJI Agras app.
Tap the mode button on the upper left and select Route Mapping on the Mapping
panel in the task mode selection screen.
Tap on the right screen, select Area Route or Boundary Route, then tap and
select Crosshair.
Drag the map and tap Add to add a point at the crosshair position. Tap to
save.
Tap and move the slider to take off. The aircraft will perform the mapping
operation along the route automatically.
Wait for the reconstruction to be completed. Tap Plan Field to perform
operations.
Tap in the middle of the right screen to select Crosshair.
Drag the map and tap Add to add a point on the map.
Set route parameters, drag to adjust the flight direction of the route, and
tap to save.
Tap to use the field and set task parameter.
Tap , check the aircraft status and task settings, and move the slider to take
off.
- Only take off in open areas and set an appropriate Connection Routing and RTH Altitude according to the operating environment.
- An operation can be paused by moving the control stick slightly. The aircraft will hover and record the breakpoint. After which, the aircraft can be controlled manually. Select the operation again to continue. The aircraft will return to the breakpoint automatically and resume the operation. Pay attention to aircraft safety when returning to a breakpoint.
- In Route Operation mode, the aircraft is able to bypass obstacles, which is disabled by default and can be enabled in the app. If the function is enabled and the aircraft detects an obstacle, the aircraft will slow down and bypass the obstacle and return to the original flight path.
- Users can set the action the aircraft will perform after the operation is completed in the app.
Maintenance
Clean all parts of the aircraft and remote controller at the end of each day
of spraying after the aircraft returns to a normal temperature. DO NOT clean
the aircraft immediately after operations are completed.
A. Fill the spray tank with clean or soapy water and spray the water through
the sprinklers until the tank is empty. Repeat this step three times.
B. Remove the spray tank strainer and sprinklers to clean them and clear any
blockage. Afterwards, immerse them in clean water for 12 hours.
C. Make sure that the aircraft structure is completely connected so that it
can be washed directly with water. It is recommended to use a spray washer
filled with water to clean the aircraft body and wipe with a soft brush or wet
cloth before removing water residue with a dry cloth.
D. If there is dust or pesticide liquid on the motors, propellers, or heat
sinks, wipe them with a wet cloth before cleaning the remaining water residue
with a dry cloth.
E. Wipe the surface and screen of the remote controller with a clean wet cloth
that has been wrung out with water.
Refer to the disclaimer and safety guidelines for more information on product
maintenance.
https://www.dji.com/t50/downloads
Download the user manual for more information: https://www.dji.com/t50/downloads
Fly Safe
It is important to understand some basic flight guidelines, both for your protection and for the safety of those around you.
- Flying in Open Areas: pay attention to utility poles, power lines, and other obstacles. DO NOT fly near or above water, people, or animals.
- Maintain Control at All Times: keep your hands on the remote controller and maintain control of the aircraft when it is in flight, even when using intelligent functions such as the Route and Fruit Tree modes and Smart Return to Home.
- Maintain Line of Sight: maintain visual line of sight (VLOS) with your aircraft at all times and avoid flying behind buildings or other obstacles that may block your view.
- Monitor Your Altitude: for the safety of manned aircraft and other air traffic, fly at an altitude lower than 100 m (328 ft) and in accordance with all local laws and regulations.
Visit https://fly-safe.dji.com for more information on critical safety features such as GEO zones.
Flying Considerations
- DO NOT use the aircraft in adverse weather conditions such as snow, fog, winds exceeding 6 m/s, or heavy rain exceeding 25 mm (0.98 in) in 12 hours.
- DO NOT fly more than 4.5 km (14,763 ft) above sea level.
- The DJI Agras app will intelligently recommend the payload weight of the tank according to the current status and surroundings of the aircraft. When adding material to the tank, the max weight should not exceed the recommended value. Otherwise, the flight safety may be affected.
- Make sure that there is a strong GNSS signal and the D-RTK antennas are unobstructed during operation.
Return to Home (RTH)
The aircraft will automatically return to the Home Point in the following
situations:
Smart RTH: user presses and holds the RTH button.
Failsafe RTH : the remote controller signal is lost.
Low Battery RTH : the aircraft battery level reaches the preset low battery
threshold.
The aircraft decelerates and brakes and hovers if there is an obstacle within
20 m of the aircraft. The aircraft exits RTH and waits for further commands.
-
The action of the aircraft when the remote controller signal is lost or the aircraft battery level is low can be set in the app. Failsafe RTH and Low Battery RTH will only be available if RTH is set.
- Obstacle avoidance is disabled in Attitude mode (which the aircraft enters in situations such as when the GNSS signal is weak) and is not available if the operating environment is not suitable for the radar modules or binocular vision system. Extra caution is required in such situations.
Pesticide Usage
- Avoid the use of powder pesticide as much as possible and clean the spraying system after use. Otherwise, the service life of the spraying system may be reduced.
- Pesticides are poisonous and pose serious risks to safety. Only use them in strict accordance with their specifications.
- Use clean water to mix the pesticide and filter the mixed liquid before pouring into the spray tank to avoid blocking the strainer.
- Effective use of pesticides depends on pesticide density, spray rate, spray distance, aircraft speed, wind speed, wind direction, temperature, and humidity. Consider all factors when using pesticides.
- DO NOT compromise the safety of people, animals, or the environment during operation.
It is important to understand the basic flight guidelines, both for your
protection and for the safety of those around you.
Make sure to read the disclaimer and safety guidelines.
Aircraft
The Agras T50 aircraft has an anti-torsion structure, offering reliable
operations. The integrated spraying system can be equipped with the optional
orchard spray package or swapped with a spreading system with a spreading
payload of up to 50 kg.
The aircraft is equipped with the phased array radar system and binocular
vision system, including downward and forward binocular vision and forward and
rear phased array radars. The systems provide multidirectional obstacle
sensing [1] as well as terrain follow and bypass functions to ensure flight
safety. Boasting an ultra HD FPV camera with a tiltable gimbal, the aircraft
can automatically collect HD field images for local offline reconstruction to
assist in precise field planning. Using DJI SmartFarm platform and DJI MAVICTM
3M, prescription maps can be generated in order to perform variable rate
fertilization.
The coaxial twin rotor structure produces strong winds so that pesticides are
able to penetrate thick canopies for thorough spraying. The spraying system is
equipped with the magnetic drive impeller pumps, dual atomized sprinklers, and
brand-new solenoid valve to improve spraying efficiency while saving liquid
pesticide. The spraying system can be expanded with two more sprinklers to
meet different operation scenarios.[2] Core modules adopt potting technology
and the aircraft has a protection rating of IP67 (IEC 60529). 
1. Propellers
2. Motors
3. ESCs
4. Aircraft Front Indicators(on two front arms)
5. Frame Arms
17. Landing Gear
18. Intelligent Flight Battery
19. Onboard D-RTK™ Antennas| 6. Folding Detection Sensors
(built-in)
7. Spray Lance
8. Sprinklers
9. Spray Tank
10. Delivery Pumps
20. Internal OCUSYNC™ Image Transmission Antennas
21. External OcuSync Image Transmission Antennas| 11. FPV Camera
12. Downward Binocular Vision
13. Forward Binocular Vision
14. Spotlights
15. Forward Phased Array Radar
16. Rear Phased Array Radar
22. Aircraft Status Indicators (on two rear arms)
---|---|---
- The downward sensing function is used to assist in Terrain Follow, while the sensing function on the other sides is for obstacle sensing.
- The illustrations in this document use the aircraft with dual atomized sprinklers as an example. Make sure to read the T50/T25 Atomized Sprinkler Package Product Information before installing an additional pair of dual atomized sprinklers to the aircraft.
Remote Controller
The DJI RC Plus remote controller features DJI O3 Agras image transmission technology and has a max transmission distance of up to 5 km (at an altitude of 2.5 m) [1] . The remote controller has an 8-core processor and a built-in 7.02-in high brightness touchscreen powered by the Android operating system. Users can connect to the internet via Wi-Fi or the DJI Cellular Dongle. Operations are more convenient and accurate than ever before thanks to the revamped DJI Agras app design and a wide range of buttons on the remote controller. With Mapping mode added to the app, users can complete offline reconstructions and perform precise field planning without the need of extra devices. The remote controller has a maximum operating time of 3 hours and 18 min with the high-capacity internal battery. Users can also purchase an external battery separately to be used to supply power to the remote controller and fully meet the requirements for long and high-intensity operations.
1. External RC Antennas
2. Touchscreen
3. Indicator Button (reserved)
4. Control Sticks
5. Internal Wi-Fi Antennas
6. Back Button
7. L1/L2/L3/R1/R2/R3 Buttons
8. Return to Home (RTH)
Button| 9. Microphones
10. Status LEDs
11. Battery Level LEDs
12. Internal GNSS Antennas
13. Power Button
14. 5D Button (customizable)
15. Flight Pause Button
---|---
16. Button C3
17. Left Dial
18. Spray/Spread Button
19. Flight Mode Switch
20. Internal RC Antennas
21. microSD Card Slot
22. USB-A Port
23. HDMI Port| 24. USB-C Port
25. FPV/Map Switch Button
26. Right Dial
27. Scroll Wheel (reserved)
28. Handle
29. Speaker
30. Air Vent
31. Reserved Mounting Holes
---|---
32. Button C1
33. Button C2
34. Rear Cover
35. Battery Release Button
36. Battery Compartment| 37. Rear Cover Release Button
38. Alarm
39. Air Intake
40. Dongle Compartment
41. Bracket
---|---
- The remote controller is able to reach its maximum transmission distance (FCC: 7 km (4.35 mi); CE/ MIC: 4 km (2.49 mi); SRRC: 5 km (3.11 mi)) in an open area with no electromagnetic interference and at an altitude of approximately 2.5 m (8.2 ft).
Specifications
Aircraft (Model: 3WWDZ-40B)
Weight| 39.9 kg (excl. battery)
52 kg (incl. battery)
Max Takeoff Weight [1]| Max takeoff weight for spraying: 92 kg (at sea level)
Max takeoff weight for spreading: 103 kg (at sea level)
Max Diagonal Wheelbase| 2200 mm
Dimensions| 2800×3085×820 mm (arms and propellers unfolded)
1590×1900×820 mm (arms unfolded and propellers folded)
1115×750×900 mm (arms and propellers folded)
Hovering Accuracy Range
(with strong GNSS signal)| D-RTK enabled: Horizontal: ±10 cm, Vertical: ±10 cm
D-RTK disabled: Horizontal: ±60 cm, Vertical: ±30 cm (radar module enabled:
±10 cm)
Operating Frequency [2]| 2.4000-2.4835 GHz, 5.725-5.850 GHz
Transmitter Power
(EIRP)| 2.4 GHz: <33 dBm (FCC), <20 dBm (CE/SRRC/MIC)
5.8 GHz: <33 dBm (SRRC/FCC), <14 dBm (CE)
RTK/GNSSOperating
Frequency| RTK: GPS L1/L2, GLONASS F1/F2, BeiDou B1I/B2I/B3I, Galileo E1/E5b,
QZSS L1/L2
GNSS: GPS L1, GLONASS F1, BeiDou B1I, Galileo E1, QZSS L1
Max Configurable Flight Radius| 2000 m
Max Wind Resistance| 6 m/s
Operating Temperature| 0° to 45° C (32° to 113° F)
Propulsion System
Motors
Stator Size| 100×33 mm
KV| 48 rpm/V
Power| 4000 W/rotor
Propellers
Dimension| 54 in (1371.6 mm)
Rotors Quantity| 8
Dual Atomized Spraying System
Spray Tank
Volume| 40 L
Operating Payload [1]| 40 kg
Sprinklers (Model: LX8060SZ)
Quantity| 2
Droplet Size| 50-500 μm
Effective Spray Width [3]| 4-11 m (at a height of 3 m above the crops)
Delivery Pumps
Type| Impreller pump (magnetic drive)
Max Flow Rate| 16 L/min (2 sprinklers)
24 L/min (4 sprinklers)
Phased Array Radar System
Model| RD241608RF (forward phased array radar)
RD241608RB (rear phased array radar)
Terrain Follow| Max slope in Mountain mode: 50°
Altitude detection range: 1-50 m
Stabilization working range: 1.5-30 m
Obstacle Avoidance [4]| Obstacle sensing range (multidirectional): 1-50 m
FOV: Forward phased array radar: horizontal 360°, vertical ±45°, upward
±45°(cone)
Rear phased array radar: vertical 360°, horizontal ±45°
Working conditions: flying higher than 1.5 m over the obstacle at a horizontal
speed no more than 10 m/s and vertical speed no more than 3 m/s.
Safety limit distance: 2.5 m (distance between the front of propellers and the
obstacle after braking)
Sensing direction: multidirectional obstacle sensing
Binocular Vision System
Measurement range| 0.5-29 m
Effective Sensing Speed| ≤10 m/s
FOV| Horizontal: 90°, Vertical: 106°
Operating Environment| Adequate light and discernible surroundings
Remote Controller (Model: RM700B)
GNSS| GPS + Galileo + BeiDou
Screen| 7.02-in LCD touchscreen, with a resolution of 1920×1200 pixels, and
high brightness of 1200 cd/m2
Operating Temperature| -20° to 50° C (-4° to 122° F)
Storage Temperature Range| Less than one month: -30° to 45° C (-22° to 113° F)
One to three months: -30° to 35° C (-22° to 95° F)
Six months to one year: -30° to 30° C (-22° to 86° F)
Charging Temperature| 5° to 40° C (41° to 104° F)
Internal Battery Chemical System| LiNiCoAIO2
Internal Battery Runtime| 3 hours 18 minutes
External Battery Runtime| 2 hours 42 minutes
Charging Type| It is recommended to use a locally certified USB-C charger at a
maximum rated power of 65 W and maximum voltage of 20 V such as the DJI 65W
Portable Charger.
Charging Time| 2 hours for internal battery or internal and external battery
(when remote controller is powered off and using a standard DJI charger)
O3 Agras
Operating Frequency [2]| 2.4000-2.4835 GHz, 5.725-5.850 GHz
Transmitter Power (EIRP)| 2.4 GHz: <33 dBm (FCC), <20 dBm (CE/SRRC/MIC)
5.8 GHz: <33 dBm (FCC), <14 dBm (CE), <23 dBm (SRRC)
Max Transmission Distance| 7 km (FCC), 5 km (SRRC), 4 km
(MIC/CE)(unobstructed, free of interference, and at an altitude of 2.5 m)
Wi-Fi
Protocol| Wi-Fi 6
Operating Frequency [2]| 2.4000-2.4835 GHz, 5.150-5.250 GHz, 5.725-5.850 GHz
Transmitter Power (EIRP)| 2.4 GHz: <26 dBm (FCC), <20 dBm (CE/SRRC/MIC)
5.1 GHz: <26 dBm (FCC), <23 dBm (CE/SRRC/MIC)
5.8 GHz: <26 dBm (FCC/SRRC), <14 dBm (CE)
Bluetooth
Protocol| Bluetooth 5.1
Operating Frequency| 2.4000-2.4835 GHz
Transmitter Power (EIRP)| <10 dBm
- The DJI Agras app will intelligently recommend the payload weight limit for the tank according to the current status and surroundings of the aircraft. Do not exceed the recommended payload weight limit when adding material to the tank. Otherwise, the flight safety may be affected.
- 5.8 and 5.1GHz frequencies are prohibited in some countries. In some countries, the 5.1GHz frequency is only allowed for use indoors.
- The spray width depends on the actual operation scenarios.
- The effective sensing range varies depending on the material, position, shape, and other properties of the obstacle.
The downward sensing function is used to assist in Terrain Follow, while the sensing function on the other sides is for obstacle sensing.
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