User manual

Aircraft
Phantom 4 User Manual
14
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2017 DJI All Rights Reserved.
Low Battery RTH
The low battery level failsafe is triggered when the DJI Intelligent Flight Battery is depleted to a point that
may affect the safe return of the aircraft. Users are advised to return home or land the aircraft immediately
when prompted. The DJI GO 4 app will display a notice when a low battery warning is triggered. The
aircraft will automatically return to the Home Point if no action is taken after a ten-second countdown.
The user can cancel the RTH procedure by pressing the RTH button on the remote controller. If the RTH
procedure is cancelled following a low battery level warning the Intelligent Flight Battery may not have
enough charge for the aircraft to land safely, which may lead to the aircraft crashing or being lost. The
thresholds for these warnings are automatically determined based on the aircraft’s current altitude and
distance from the Home Point.
The aircraft will land automatically if the current battery level can only support the aircraft long enough
to descend from its current altitude. The user cannot cancel the auto landing but can use the remote
controller to alter the aircraft’s orientation during the landing process.
The Battery Level Indicator is displayed in the DJI GO 4 app, and is described below:
Battery level Indicator
Critical Low battery level
warning(Red)
Low battery
level warning(Yellow)
Sufcient battery
level(Green)
Remaining ight time
Power requires
to return home
12:29
Smart RTH
Use the RTH button on the remote controller (refer to “RTH button” on page 33 for more information) or
tap the RTH button in the DJI GO 4 app and follow the on-screen instructions when GPS is available to
initiate Smart RTH. The aircraft will then automatically return to the last recorded Home Point. You may use
the remote controller’s control sticks to control the aircraft’s position to avoid a collision during the Smart
RTH process. Press and hold the Smart RTH button once to start the process, and press the Smart RTH
button again to terminate the procedure and regain full control of the aircraft.
Aircraft cannot return to the Home Point when GPS signal is weak ( [ ] displays grey) or
unavailable.
Aircraft automatically descends and lands if RTH is triggered when the aircraft ies within a 20
meters (65 feet) radius of the Home Point. Aircraft will stop ascending and immediately return
to the Home Point if you move the left stick if the aircraft reaches 20 meters (65 feet) altitudes or
beyond during Failsafe.
The aircraft cannot avoid obstruction during the Failsafe RTH when Obstacle Sensing system is
disabled, therefore, it is important to set an suitable Failsafe altitude before each ight. Launch
the DJI GO 4 app and enter “Camera” and select “MODE > Advanced Settings > Failsafe
mode” to set the Failsafe altitude.
User cannot control the aircraft while the aircraft is ascending to its failsafe altitude. However,
user can press RTH button once to exit ascending and regain control.