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N3-AG
User Manual
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dji N3-AG, A3-AG User Manual

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A3-AG/N3-AG
Agriculture Kit
User Manual
2017.08
V2.0
Contents
A3-AG Introduction
N3-AG Introduction
Agriculture Management Unit (AMU) Introduction
Installation
Overview
Start the Installation
System Functions
Flight Modes
Operation Modes
Operation Resumption
Empty Tank Warning
Return to Home (RTH)
Attitude Control When One Motor Output Fails
Propulsion System Protection
System Data Protection
Altitude Stabilization System
Redundancy System
Flight
Operation Environment
Flight Limits and No-Fly Zones
Pre-Flight Checklist
Compass Calibration
Flight Control
DJI Assistant 2
Installation and Launching
Using DJI Assistant 2
Appendix
Specications
Flight Status LED Indicator Descriptions
FAQ
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A3-AG Introduction

The A3-AG Agriculture Flight Control System, based on the DJI A3 flight control system, is
designed for agriculture applications. It consists of flight controller, GPS-Compass Pro, PMU
(Power Management Unit) and LED module. The A3-AG can be upgraded to the A3-AG Pro triple
modular redundancy system by installing two upgrade kits.
A3-AG and A3-AG Pro Parts
Flight Controller
Feature Highlights
1. Built-in inertial sensors for the measurement of aircraft attitude and built-in pressure sensor for
the detection of aircraft altitude.
2. Support for multiple receiver types. If used with the DJI Datalink 3, the A3-AG has direct
access to features in the DJI MG app such as intellignt planning and operation.
3. M1 to M8 are used to connect the ESCs of the aircraft and iESC for DJI Intelligent ESC
communication.
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1. IMU1 Port
Communicates with the IMU Pro module.
2. CAN1 Port
Dedicated DJI CAN-Bus port.
Communicates with the A3 GPS-Compass
Pro or other DJI devices (e.g. Agriculture
Management Unit (AMU) or Real Time
Kinematic (RTK) GPS system).
3. Orientation Arrow
The FC module should be mounted with
the arrow pointing in the specied direction
(Orientation can be set in the DJI Assistant 2).
4. Status Indicator
Indicates the status of the ight controller
and triple modular redundancy system.
5. RF Port
Communicates with the DJI Datalink 3 Air
System.
6. iESC Port
Communicates with the DJI Smart ESC
7. M1-M8 Pins
Connects to the corresponding ESC
PWM port for each motor.
8. LED Port
Communicates with the LED module.
9. IMU2 Port
Communicates with the IMU Pro module.
10. PMU Port
Derives power from the PMU.
11. CAN2
Reserved port.
12. API Port
Reserved port.
13. F5-F8 Pins
Multifunction PWM I / O ports.
14. F1-F4 Pins
Multifunction PWM output ports.
15. S-Bus Port
Communicates with a DJI DR16 or
S-Bus receiver.
using the Smart ESC Communication Cable.
GPS-Compass Pro Module
The GPS-Compass Pro module has a built-in GPS and compass. The compass is used for
geomagnetic eld measurements. Compass calibration is required before use. DO NOT use or
store the compass in environments with ferromagnetic materials.
Note that the GPS-Compass Pro module in the Upgrade Kit is the same as the one in the A3-AG
package.
1. Status Indicator
Indicates the status of the GPS-Compass Pro
module and triple modular redundancy system.
2. Orientation Arrow
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3
The GPS-Compass Pro module should be
mounted with the arrow pointing to the aircraft’s
nose.
3. Extended CAN1 Port
Dedicated DJI CAN-Bus port. Communicates with DJI devices (e.g. Agriculture Management
Unit (AMU) or Real Time Kinematic (RTK) GPS system).
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A3-AG/N3-AG
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PMU Module
Supported the LiPo batteries. with built-in PMU providing power for the whole Flight Control
System and low voltage protection function.
1. Power Port (9V 3A)
Connected to the Flight Controller for
power supply.
2. iBAT
1
2
Reserved.
3. 3S-12S
Derives power from the LiPo batteries.
LED Module
The LED Module has an integrated LED Indicator and Micro USB port.
A. The LED is mainly for ight control system status indication during ight (e.g. Flight Mode).
B. In addition, there is a Micro USB port for rmware upgrades via DJI Assistant 2.
1. Flight Status Indicator
Indicates the status of the ight control system.
1
2. Micro USB Port
Used to congure and upgrade the A3 or A3 Pro
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via DJI Assistant 2.
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IMU Pro Module (included in the upgrade kit)
Includes built-in inertial sensors for the measurement of aircraft attitude and a built-in pressure
sensor for detecting aircraft altitude. The IMU Pro has been calibrated before delivery and
should be used under the specied temperature range. Using the IMU Pro outside the specied
temperature range may have a negative eect on the IMU’s performance.
1. Orientation Arrow
The IMU Pro module should be mounted with the arrow pointing to the specied orientation
(Orientation can be set in the DJI Assistant 2).
2. Status Indicator
Indicates the status of the IMU Pro module and triple
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modular redundancy system.
3. CAN1 GPS Port
Communicates with the GPS-Compass Pro module.
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N3-AG Introduction

The N3-AG Agriculture Flight Control System, based on the DJI N3 flight control system, is
designed for agriculture applications. It consists of ight controller, GNSS-Compass Pro, PMU
(Power Management Unit) and LED module. The N3-AG can be upgraded to the N3-AG Pro
redundancy system by installing an upgrade kit.
LED
N3-AG Parts
Flight Controller
Feature Highlights
1. Built-in inertial sensors for the measurement of aircraft attitude and built-in pressure sensor for
the detection of aircraft altitude.
2. Support for multiple receiver types. If used with the DJI Datalink 3, the A3-AG has direct
access to features in the DJI MG app such as intellignt planning and operation.
3. M1 to M8 are used to connect the ESCs of the aircraft and iESC for DJI Intelligent ESC
communication.
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Flight Controller
1. PMU Port
Derives power from the PMU module.
2. LED Port
Communicates with the LED module.
3. M1-M8 Pins
Connects to the corresponding ESC
PWM port for each motor.
4. iESC Port
Communicates with the DJI Smart ESC
using the Smart ESC Communication
Cable.
5. RF Port
Communicates with the DJI Datalink 3
Air System.
6. Status Indicator
7. CAN2 Port
CAN Bus port (Reserved port).
8. S-Bus Port
Communicates with a DJI DR16 or S-Bus
receiver.
9. F1-F4 Pins
Multifunction PWM output ports.
10. F5-F8 Pins
Multifunction PWM I / O ports.
11. API Port
Reserved port.
12. EXP Port
Extended port (Communicates with the
A3 upgrade kit).
13. Orientation Arrow
The ight controller orientation arrow.
Indicates the status of the ight controller.
GNSS-Compass Module
The GNSS-Compass module has a built-in GPS/GLONASS and compass. The compass is used
for geomagnetic eld measurements. Compass calibration is required before use. DO NOT use or
store the compass in environments with ferromagnetic materials.
1. Orientation Arrow
The GNSS-Compass module
should be mounted with the arrow
pointing toward the aircraft nose.
2. GNSS-Compass Status Indicator
Indicates the status of the GNSS-
Compass Module.
3. Extended CAN1 Port
Dedicated DJI CAN-Bus port. Communicates with a DJI device.
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PMU Module
Supported the LiPo batteries. with built-in PMU providing power for the whole Flight Control
System and low voltage protection function.
1. iBAT
Reserved.
1
2. Power Status Indicator
Indicates the power status of the
2
ight control system.
3. 3S-12S
3
Derives power from LiPo battery.
4. Power Port (9V 2A)
Connected to the Flight Controller for power supply.
5. CAN1 Port
Connected to the GNSS-Compass module.
LED Module
The LED Module has an integrated LED Indicator and Micro USB port.
A. The LED is mainly for ight control system status indication during ight (e.g. Flight Mode).
B. In addition, there is a Micro USB port for rmware upgrades via DJI Assistant 2.
1. Flight Status Indicator
Indicates the status of the flight control
system.
2. Micro USB Port
LED
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Used to congure and upgrade the N3 via DJI
Assistant 2.
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Agriculture Management Unit (AMU) Introduction

The Agriculture Management Unit (AMU) is equipped with essential expansion ports to support
DJI modules such as Altitude Stabilization System, delivery pump, RTK.
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1. 12V 2A
Reserved power port, max operating
voltage / current: 12V@2A
2. 15V 6A
Reserved power port, max operating
voltage/current: 15V@6A. Users can
connect a DJI data protection module to
this port for power supply.
3. PWM
Reserved port.
4. Level Meter & Flow Meter Port
Reserved port.
5. D485
Reserved port.
6. Radar
Connected the DJI Altitude Stabilization
System.
7. RTK
Connected to the DJI D-RTK device.
8. Power Port
XT60 port. Connected to an external
power supply (6S - 12S).
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9. Pump
Connected to the DJI integrated pump.
10. CAN
CAN Bus port. Connected to the CAN1
port on the ight controller.
11. CAN
Same as the 10th port.
12. UART I
Battery data communication port
(reserved).
13. UART II
Battery data communication port
(reserved).
14. Working Status Indicator
It will glow solid green when the device
is working normally. It will be solid red
when the device is abnormal or during
rmware update.
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Installation

Installation steps are similar for both the N3-AG and A3-AG. The descriptions in this chapter use
the N3-AG as an example. Unless specied, the following context can also be applied to the A3-
AG installation.

Overview

Installation Procedure
Read this section carefully and follow the procedures below to install your ight control system,
otherwise the ight control system may not normally work.
1
Ensure all parts are in good condition.
2
Mount the parts to your airframe and connect them properly.
3
Launch the DJI Assistant 2 and congure the parameters.
4
Ensure the motor, remote controller channels and Failsafe settings are correct.
5
Ensure the devices connected to the ight controller are working normally and correctly set in
DJI Assistant 2.
Preparation
Equipment
Ensure you have a suitable airframe, remote controller system, ESCs and battery to use with the
ight control system. Below is a list of compatible equipment.
A. Airframes
The following airframes are supported. Choose an airframe and assemble it properly.
Remember to select the corresponding airframe type in DJI Assistant 2 after assembling the
airframe and connecting the cables.
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X4I4
I6
X8 IX8
V6 I8V8
IY6 Y6
A3-AG/N3-AG
User Manual
The arrow directions in the above diagram indicate the rotation direction of the motor/
propeller. Dark colored arm (s) indicate the direction of the aircraft’s nose.
For coaxial propellers, dark colored propellers are at the top and gray colored propellers
are at the bottom. Otherwise, all propellers are at the top.
B. Remote Controller System
The following remote controller systems are supported. Whatever type of receiver is used,
please make sure that the receiver and remote controller are linked properly before use. Be
sure to link the receiver and remote controller according by following all the procedures in
the remote controller and receiver user manual, and according to the congurations in DJI
Assistant 2.
DJI Datalink 3
DJI Datalink 3 lets you use DJI MG app to congure the ight control system parameters and
utilize intelligent agricultural operation.
DR16
The DR16 receiver does not support DJI MG app.
S-Bus
The S-BUS receiver does not support DJI MG app.
There is no need to enable the Failsafe function on the remote controller. Once the
receiver loses signal from the remote controller, the controller unit will enter Failsafe
mode automatically, and the aircraft will hover or return-to-home & land according to the
Failsafe congurations in DJI Assistant 2.
C. Propulsion System
ESC
ESC output should be 400Hz. DJI Propulsion systems are recommended.
The iESC port can connect to the DJI Smart ESC Communication Cable if using the DJI
Intelligent ESC.
Propeller and Motor
It is required to use with Propeller and Motor of more than 2400rpm.
D. Battery
If using a LiPo battery (3S - 12S), only the voltage information and low voltage protection are
available.
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Preparing DJI Assistant 2
Download DJI Assistant 2
DJI Assistant 2 is used to congure the ight control system.
http://www.dji.com/agriculture-solution/info#downloads
Supports Windows 7 (or later) or Mac OS X 10.11 (or later).
Installing DJI Assistant 2
DJI Assistant 2 will guide you through setting the Flight Control System’s parameters. Carefully
follow the on-screen prompts to congure the Flight Control System.
Installing and Running on Windows
Supports Windows 7, Windows 8, Windows 10 (32 or 64 bit).
1. Connect the Micro USB port on the LED module to a PC via a Micro USB cable.
2. Run the software assistant installer and follow the prompts to nish installation.
3. Double click the software assistant icon on your Windows desktop to launch the software.
Installing and Running on Mac OS X
Supports Mac OS X 10.11 (or later).
1. Run the DMG installer and follow the prompts to nish installation.
2. If using Launchpad to run DJI Assistant 2 for the rst time, Launchpad will not allow access
because the software has not been reviewed by the Mac App Store.
3. Locate the DJI Assistant 2 icon in the Finder, press the Control key and then click the DJI
Assistant 2 icon (or right-click the DJI Assistant 2 icon using a mouse). Choose Open from the
shortcut menu, click Open in the dialog box and the software will launch.
4. After the rst successful launch, direct launching of the software can be achieved by double-
clicking the DJI Assistant 2 icon in the Finder or using Launchpad.
DJI Assistant 2 works exactly the same way on Mac OS X and Windows. The DJI
Assistant 2 screenshots that appear in this manual are taken from the Windows version.
For safety reasons, do not use the power battery for power supply or remove the
propellers from the motors before connecting to the Assistant Software.he Windows
version.
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Start the Installation

Important: Strictly follow the provided guidelines. Failure to do so may lead to unexpected
ight behavior or serious accidents.
Flight Control System Installation
Mounting the Flight Controller
Mount the Flight Controller with the Orientation Arrow pointing to the front, back, left or right.
Make sure the module is parallel to the aircraft and then x it onto the aircraft with double-faced
adhesive tape. Congure the parameters in DJI Assistant 2 and select the direction in which you
mounted the Flight Controller. We recommend mounting the Flight Controller with the Orientation
Arrow pointing forward.
Built-in IMU
The top side should be facing up. DO NOT mount upside-down.
Remember to warm up the battery if operating in cold weather.
Mount the ight controller at a low vibration position. The sides of the ight controller
should be precisely parallel to the aircraft body. Based on our experience, there is less
vibration near the aircraft’s center of gravity.
The ight controller is NOT water-proof or oil-proof.
Check the double-faced adhesive tape regularly to ensure the IMU is fixed firmly in
place.
Mounting the GNSS-Compass Module*
Follow the procedures below to mount the GNSS-Compass bracket and the GNSS-Compass
module. The GNSS-Compass module included in the Upgrade Kits is the same as the one in the
N3 package.
* For the A3-AG, it is GPS-Compass Pro module.
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1. Use the M2.0×4 screws to assemble the GNSS-Compass bracket with the Ball End Hex Key
assistant. The longest one is recommended.
2. With the M2.5×7 screws and M2.5×3.4 nuts, mount the bracket on the aircraft.
3. Ensure the GNSS-Compass arrow is pointing to the aircraft nose and then x it onto the top of
the GNSS-Compass bracket. Try to keep it parallel to the aircraft.
Usage Requirements
1. The DJI logo should be facing the sky, with the orientation arrow pointing directly to the nose
direction; otherwise you may experience take o failure.
2. Fly the aircraft in an open space without buildings or trees; otherwise the GPS satellite number may
be aected.
3. The compass is sensitive to magnetic interference. Always keep the compass module away
from magnetic elds. Otherwise, the compass module may become damaged and lead the
aircraft to work abnormally or even lose control.
4. Select a bracket of appropriate length for you aircraft to avoid interference with the compass.
The length is based on the airframe type and the mounting position and so on. Ensure that
there will not any compass warning when the aircraft is ying with maximum load and can
normally y.
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Mounting the LED Module
Mount the LED module in a position to ensure it remains visible during flight. The LED bracket
included can be used to x the LED module onto the aircraft.
Mounting the PUM Module
Mount the PMU module to an unobstructed position on the bottom of the aircraft’s upper plate for heat
dissipation.
PMU
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Flight Control System Connection
Follow the below diagram to connect the ight control system, and use the cable ties to tidy the
cables.
LED
The ight control system’s shell is connected to the whole system’s ground.
Connecting to the Airframe and its Equipment
Ensure you have a suitable airframe, remote controller system, ESCs and battery to use with
the flight control system. Strictly follow the provided guidelines. Failure to do so may lead to
unexpected ight behavior or serious accidents.
Connecting to a Receiver
Select the RF port or the S-Bus port for dierent types of receivers.
DJI Datalink 3
Connect the DJI Datalink 3 receiver DBUS port to the Flight Controller RF Port with included RF
Cable.
RF Cable
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