© 2014 DJI. All Rights Reserved. 

### 17 

### Installing and connecting battery 1. Attach battery to battery tray. Do not use an oversized battery. Maximum installation dimension is 80mm X

120mm X 200mm. 2. Connect the black connector and then the red connector to power on. Disconnect the red connector then

black connector to power off. Connectors are solderedInstalling Battery

### 18 © 2014 DJI. All Rights Reserved. 

# Setting Up the Landing Gear Using a 2-position RC transmitter switch, landing gear retracti on can be carried out remotely.

Setting up the transmitter Select a 2-position switch (default setting is OK) as the control input for the landing gear. Ensure the corresponding receiver port is connected to the “IN” port on control board. For the A2 flight control system, connect the flight controller’s F1 port to “IN” port on control board.
Upper: Toggle the switch to this position to raise the landing gear.

Lower: Toggle the switch to this position to lower the landing gear.

If the transmitter switch has a FailSafe function, set the FailSafe value to the [Lower] position. This ensures that the landing gear will lower automatically when the receiver enters FailSafe mode. To avoid accidental switch triggering, slide levers or other controls can be used for landing gear control. 

### Usage procedures 1. Ensure transmitter and receiver batteries are fully charged. 2. Toggle the switch to the [Lower] position, and then turn on the transmitter. 3. Ensure the “R”, “L” and “IN” connections are correct. 4. Ensure the landing gear is in the [Lower] position, then power on the system. If a solid green LED on the

landing gear control board lights up, everything is normal. If it flashes green slowly, re-calibrate the system according to instructions in “Recalibrating Servo Travel”. 5. Toggle the switch to the [Upper] position ONLY AFTER takeoff. 6. Toggle the switch to the [Lower] position for landing.Setting Up the Landing Gear© 2014 DJI. All Rights Reserved. 

### 19 Servo power will shut off 3 seconds after the landing gear has reached its target position. When powering on the system, if the transmitter switch is in the [Upper] position, the LED will flash red quickly as a warning. Toggle the switch to the [Lower] position to continue. If there is an abnormal signal or no signal input into the “IN” port, the LED will slowly flash red. Check receiver and connections for problems. If servo power consumption is too high, the LED will light up red. If this lasts more than 4 seconds, the landing gear will lower and the LED will flash green slowly. Re-calibration is needed before flying. A2 flight control system users can use the A2 Assistant to set intelligent gear on the “Advanced” page. Refer to the “A2 user manual” for details. 

### LED Control Board Indicator System normal

— Solid green. Calibration required Blinks rapid green. Recalibration required Blinks slow green. Calibration failed

— Solid yellow. Enter calibration mode Blinks rapid yellow. System calibrating Blinks slow yellow. Motor stalled

— Solid red. Unsafe startup alert Blinks rapid red. Input signal abnormal Blinks slow green. 

### Landing Gear Specifications

Parameter Range Parameter Range Working Voltage 3S~6S (LiPo) Input Signal PWM (High-Pulse Width 800us~2200us) Working Current Max 1A@6S Output Signal PWM (Mid Position is 1520us) in 90Hz Working Temperature -20~70° C Output Voltage 6V Total Weight 875g Servo Travel 150° (Minimum 120° )Setting Up the Landing Gear

### 20 © 2014 DJI. All Rights Reserved. 

# Mounting the Gimbal Before assembling the gimbal, install the GCU as shown below. B e sure to install on the side as shown below. A DJI Z15-GH4 (HD) gimbal has been used as an example in the fo llowing diagrams.

The connectors on gimbal should be removed for better performance, then the gimbal can be mounted to the lower connection points. Users of DJI Z15-5N / 7N gimbal, refer to the DJI Z15-5N / 7N Gimbal Mounting Notes (Page 21) for details.Mounting the Gimbal© 2014 DJI. All Rights Reserved. 

### 21 Check that the system’s center of gravity is on the line as sho wn in the diagram below.Mounting the Gimbal 

### DJI Z15-5N / 7N Gimbal Mounting Notes
Due to the size restriction of the Z15-5N / 7N gimbal, users sh ould purchase extended landing gear legs (used with Z15-5N / 7N gimbal) to avoid damage and/or failure during the self-test. Refer to the Part List Packag e No.3 4 (Page 31) for details. Follow the Mounting the Landing Gear (Page 6) instructions to mount extended landing gear legs. Then the gimbal can be mounted as shown below. Package No.34 is for users whose landing gear legs are 300mm. Users whose landing gear legs are 350mm have no need to purchase this part.

### 22 © 2014 DJI. All Rights Reserved. 

# Appendix ESC Sound

ESC State Sound Ready 1234567--B--B Throttle stick is not at bottom BBBBBB... Input signal abnormal B

-------- B

-------- B... Input voltage abnormal BB

--- BB

--- BB

--- BB... 

## ESC LED

ESC State LED Standby Off Motor rotating Solid Red or Green On Motor rotating at full throttle position Solid Yellow On
DJI ESCs are specifically designed for multi-rotors. When used with DJI autopilot systems parameters and travel ranges do not have to be calibrated. 

## Specifications

Frame Diagonal Wheelbase 900mm Frame Arm Length 358mm Frame Arm Weight (with Motor, ESC, Propeller ) 316g
Center Frame Diameter 272mm Center Frame Weight (with Landing Gear Mounting Base, Servos) 1185g Landing Gear Size 460mm(Length)×450mm(Width)×360mm(Height) 

### Motor Stator Size 41×14mm KV 400rpm/V Max Power 500WAppendix© 2014 DJI. All Rights Reserved. 

### 23 Weight (with Cooling Fan) 158g 

### ESC Working Current 40A Working Voltage 6S LiPo Signal Frequency 30Hz ~ 450Hz Drive PWM Frequency 8KHz Weight (with Radiators) 35g 

### Foldable Propeller (1552/1552R) Material High strength performance engineered plastics Size 15×5.2 inch Weight 13g 

### Flight Parameters Takeoff Weight 4.7Kg ~ 8.2Kg Total Weight 3.3Kg Power Battery LiPo (6S,10000mAh~15000mAh,15C(Min)) Max Power Consumption 3000W Hovering Power Consumption 1000W (@6.8Kg Takeoff Weight) Hovering Time 18min (@12000mAh & 6.8Kg Takeoff Weight) Working Environment Temperature -10° C ~ 40° C 

## Gain Value Settings

Flight Control Basic Attitude Pitch 

### Roll Yaw Pitch Roll Vertical 

### A2 110% 

### 110% 120% 220% 220% 120% 

### WooKong-M 160% 

### 160% 160% 190% 190% 100%Appendix

### 24 © 2014 DJI. All Rights Reserved. 

## Remounting the Propellers Instructions 1. Use two M3×12.3 screws and four washers to remount propellers. 2. Apply thread locker to the thread of the propellers mount first. 3. Affix screws with 4Kg ∙ cm (0.4N ∙ m) torque. Refer to original screw tensions if you are unfamiliar with torque measurements. Applying thread locker to the propeller mount first avoids getting thread locker into the holes of the plastic propeller. Loose screws cannot be securely locked with thread locker.GVGPGVGP Red Black Blue Thick wire Solder pad Blue Black Red Fine wire Fine wire Thick wire

CCW arms CW arms



## Propeller Precautions Torque markers on the screws and propeller covers will give you a visual cue to check whether the propellers are loose. Check the torque markers before every flight. 

# FAQ Soldering the ESC Be sure to solder the thick wires and fine wires correctly when soldering an ESC to the frame arm. Clockwise (CW) and counter clockwise (CCW) motors have a different arrangement of the colored wires.FAQ© 2014 DJI. All Rights Reserved. 

### 25 

## Using the Propeller Holder Instructions 1. Insert the propeller blades into the propeller holder. 2. Attach the propeller holder to the frame arm.



## Assembling Motor Vibration Absorbers A soft damper is part of the vibration absorber. Assemble soft dampers as shown below. Assembly is the same for CCW and CW propellers.

Ensure all soft dampers and vibration absorbers are in good condition before every flight. If not, replace immediately. Otherwise, the flight performance of your a ircraft will be adversely affected. Before installing the soft dampers, put the copper gaskets onto the four mounting holes on the carbon plate. Then put the soft dampers into the mounting holes. After tightening the screws, the vibration absorbers may be twisted. If this is the case, hold the motor with your thumbs under the base plate and fingers on the top carbon plate, and squeeze the plates together to make the vibration absorbers flat and paralle l with the plates.FAQ

### 26 © 2014 DJI. All Rights Reserved. 

## Remounting the Landing Gear Servo Remounting servos is not recommended as they are pre-installed. 

### Instructions 1. Connect the left servo cable to the “L” port of the landing gear control board. 2. Connect the right servo cable to the “R” port of the landing gear control board. 3. Press and hold the SET button using a pin then power on. You will see a yellow LED beside the SET button

flashing quickly. Wait as servos complete position initializatio n. 4. Make sure the arm connecting to the servo is parallel to the link as shown in the following diagram. 5. Assemble the left and right servos to the left (between M3, M4) and the right (between M5, M6) parts of the landing gear. Power off.



## Recalibrating Servo Travel Instructions 1. Keep your hands away from all moving parts. 2. Ensure the “R”, “L” and “IN” connections are correct. 3. Keep the whole aircraft off of the ground during calibration, as landing gear will move. 4. Press and hold the SET button using a pin while powering on, then release. An LED will flash yellow

quickly. Press the SET button again. Auto calibration will begin and the LED will flash yellow slowly. DO NOT obstruct any moving parts during auto calibration. 5. During calibration, the left landing gear will raise and lower, followed by the right landing gear. 6. After calibration, both the left and right landing gears will be lowered and the LED will display a solid green

light. This indicates that the landing gear is working properly. If the LED is solid yellow after calibration, a problem has occurred. Carry out the instructions in “Remounting the Landing Gear Servo” then try again. Avoid obstructions during calibration. If the landing gear was obstructed, recalibration will be required, per the above steps. If the “R” and “L” servo cables are reversed, travel will not be measured correctly. Fix the connections and recalibrate the landing gear using the above steps. Landing gear travel has been pre-calibrated. Mechanical adjustment of the gear travel is not recommended. 

### After Installation Servo Connecting arm Link R L IN

To left servo To receiver channel (To F1 port if use A2) SET Button LED To right servo© 2014 DJI. All Rights Reserved. 

### 27 Pac k age N o . P ackage P art N o . C W a s c l o c k w i s e C C W a s c o u n t e r c l o c k w i se B a s B alck R a s R e d G a s G r e e n 0 1

- F rame A r m 0 2

- C e n t e r F r a m e ; ; ; ; ;
; 0 3

- L a n d ing G e a r S 9 0 0 

# S 9 0 2 0 1 0 1 C C W 

# Part List If you require a replacement part, locate the part that you wish to replace in the following tables. Then order the package that comes with the specified part. The numbering of the part is defined as follow:

S9012501CCW/ S9012502CW M3x12.3 (hexagan)

S9012101B/ S9012201R
S9010801/ S9013501

S9011001

S9012901/ S9013001/ S9013101/ S9013201 S9012301R/ S9012401G M3x10.3

S9010401CCWB/ S9010501CCWR/ S9010601CWB/ S9010701CWR

S9012302/ S9012402

M3x12.3 (cheese) S9012503

S9010404/ S9010504/ S9010604/ S9010704 S9010403/ S9010503/ S9010603/ S9010703 S9010402/ S9010502/ S9010602/ S9010702 S9010802

M3x4.5 S9012902/ S9013002/ S9013102/ S9013202 S9012903/ S9013003/ S9013103/ S9013203 S9012102B/ S9012202R/ S9013701R/ S9013801B 

### Frame Arm

Package No. Name Part No. 4 

### S900 Frame Arm CCW - Black S9010401CCWB, S9010402, S9010403, S9010404, M3×12.3 (cheese) 5 

### S900 Frame Arm CCW - Red S9010501CCWR, S9010502, S9010503, S9010504, M3×12.3 (cheese) 6 S900 Frame Arm CW - Black S9010601CWB, S9010602, S9010603, S9010604, M3×12.3 (cheese) 7 S900 Frame Arm CW - Red S9010701CWR, S9010702, S9010703, S9010704, M3×12.3 (cheese) 8 S900 Motor Damping Unit S9010801, S9010802, M3×10.3 10 S900 Motor Mount Carbon Board S9011001, M3×4.5Part List

### 28 © 2014 DJI. All Rights Reserved. 

### 21 S900 4114 Motor with black Prop cover S9012101B, S9012102B, M3×4.5 22 S900 4114 Motor with red Prop cover S9012201R, S9012202R, M3×4.5 23 S900 ESC with Red LED S9012301R, S9012302, M3×12.3 (cheese) 24 S900 ESC with Green LED S9012401G, S9012402, M3×12.3 (cheese) 25 S900 Propeller Pack S9012501CCW, S9012502CW, S9012503, M3×12.3 (hexagan)

S9020301

S9020302 M3x8 (self-tapping) S9020901 M3x6.5

S9021201L S9021202R

S9021203/ S9021101 S9021501 S9021502 M2.5x8 (cheese)

M3x6.5 S9021401 S9021503/ S9032703

M2.5x8 (cheese) 

### Center FramePart List© 2014 DJI. All Rights Reserved. 

### 29 

### Package No. Name Part No. 3 

### S900 Lock Knob S9020301, S9020302, M3×8 (self-tapping) 9 

### S900 Center Frame Support Pillar S9020901, M2.5×8 (cheese) 12 S900 Arm Mounting Bracket S9021201L, S9021202R, S9021203, M3×6.5 14 S900 Center Frame Bottom Board S9021401, M3×4.5 (cheese), M3×8 (selftapping), M3×6.5, M3×5.5 15 S900 Center Frame Top Board S9021501, S9021502, S9021503, M3×6.5, M2.5×8 (cheese) 11 S900 Frame Arm Mounting Steel Shaft S9021101 

### Landing Gear

S9031601/ S9033304 S9031603/ S9033305 S9031602/ S9033303 S9031604/ S9033306

S9031605/ S9033307 S9033301 S9033302

M2.5x5

S9031802 S9031803 S9031804 S9031805 M2.5x8(cheese) S9031806 S9031807 M3x8 S9031808 S9031809 M1.6x5 S9031810 S9031811 S9031812
S9031814 S9031815

S9031801 S9031712

S9031701 M2.5x10 (socket cap) M2.5x13 M3x6.5 S9031903
S9031904 S9031905 M3x4.5

M3x6.5

M3x6.8 S9031902

S9031901

S9032001 S9032002 M2.5x8 (socket cap) M2.5x8 (cheese)

S9032601 S9032602 S9032603 S9032606 M3x22 (socket cap) S9032604 S9032605

M2.5x8 (socket cap) S9030201 S9033313

S9033308 S9033309 S9033310 S9033311 S9033312
S9031713/ S9031813 S9033314

Caution (1) Parts within the dotted box are mirrored against each other. Except for S9031814 and S9031815. (1)Part List

### 30 © 2014 DJI. All Rights Reserved. S9032701

S9032702 S9013601 S9020201 S9020202

S9020103 S9020104 

### Package No. Name Part No. 16 

### S900 Gimbal Damping Bracket S9031601, S9031602, S9031603, S9031604, S9031605, M2.5×5, M2.5×13 17 

### S900 Retractable Module (Right) S9031701, S9031702, S9031703, S9031704, S9031705, S9031706, S9031707, S9031708, S9031709, S9031710, S9031711, S9031712, S0031713, M1.6×5, M2.5×10 (socket cap), M2.5×8 (cheese), M2.5×5, M3×8, M3×4.5, M3×6.8 18 S900 Retractable Module (Left) S9031801, S9031802, S9031803, S9031804, S9031805, S9031806, S9031807, S9031808, S9031809, S9031810, S9031811, S9031812, S9031813, S9031814, S9031815, M1.6×5, M2.5×10 (socket cap), M2.5×8 (cheese), M2.5×5, M3×8, M3×4.5, M3×6.8 19 S900 Gimbal Damping Connecting Brackets S9031901, S9031902, S9031903, S9031904, S9031905, M2.5×5, M3×6.5

20 S900 Landing Skid S9032001, S9032002 26 S900 Landing Gear Leg S9032601, S9032602, S9032603, S9032604, S9032605, S9032606, M2.5×8 (socket cap), M3×22 (socket cap) 2 S900 Battery Tray S9030201 33 S900 Gimbal Mounting Accessories S9033301, S9033302, S9033303, S9033304, S9033305, S9033306, S9033307, S9033308, S9033309, S9033310, S9033311, S9033312, S9033313, S9033314, M2.5×5, M2.5×13, M2.5×8 (cheese)


### MiscellaneousPart List

S9033401

Caution: This part is used with Z15-5N / 7N gimbal.© 2014 DJI. All Rights Reserved. 

### 31 

### Package No. Name Part No. 13 S900 Center Frame Package 3, 9, 12, 14, 15 29 S900 Complete Arm [CW-RED] Package 7, 8, 10, 11, 22, 23, 25, S9012901, S9012902, S9012903 30 S900 Complete Arm [CW-Green] Package 6, 8, 10, 11, 21, 24, 25, S9013001, S9013002, S9013003 31 S900 Complete Arm [CCW-RED] Package 5, 8, 10, 11, 22, 23, 25, S9013101, S9013102, S9013103 32 S900 Complete Arm [CCW-Green] Package 4, 8, 10, 11, 21, 24, 25, S9013201, S9013202, S9013203 27 S900 GPS Holder S9032701, S9032702, S9032703, M2.5×8 (cheese) 28 S900 Screw Pack Assorted screws 1 S900 Power Cord Plug S9020101, S9020102, S9020103, S9020104 34 S900 Extended Landing Gear Leg S9033401 35 S900 Rubber Damper for 4114 Motor S9013501, M3 × 10.3 36 S900 Propeller Holder S9013601 37 S900 4114 Motor-Red Prop Cover S9013701R, M3 × 12.3 (hexagan) 38 S900 4114 Motor-Black Prop Cover S9013801B, M3 × 12.3 (hexagan) 

# FCC Statements This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.FCC StatementsUser manual is subject to change without prior notice.


### http://www.dji.com/product/spreading-wings-s900 You may visit DJI offical website to obtain the latest version o f user manual.

© 2014 DJI. All Rights Reserved.