DJI Ace One - Manual (Page 16)

©2012 DJI Innovations. All Rights Reserved. 16 |
B7
Engine Governor
In Ace One Assistant Software, page-ENGINE:
STEP1: Before using Governor Control mode, fine tune your
Gas/Nitro engine to good condition. Otherwise the
performance would be negatively impacted.
STEP2: Select the operation mode:
 Select [TX Control] for electric motor;
 For Gas/Nitro engine, select [TX Control] first, and finish
next step: set throttle servo working range. Then select
[Governor Control].
STEP3: Set throttle servo travel range, move the throttle stick to
For Electric For Gas/Nitro Click to set
Maximum open position [SET-MAX]
lowest stick throttle Engine idling position [SET-IDLE]
Throttle hold Cut position [SET-STOP]
Notice: you must not turn on the throttle-cut.
STEP4: After three of the throttle positions being set, click
[TEST] button above to review your throttle working
range settings. Throttle servo will be forced to stay on
each respective position for about 2 seconds. Repeat
the [SET] procedure if any incorrects.
If a mistake is made, e.g, STOP position being set between MAX and IDEL, you will be notified by (Wrong), and Engine
governor will be forced to work in [Tx Control] mode automatically.
STEP5: A third party engine speed sensor is required for the engine speed governor to function. We suggest using Futaba magnetic
engine speed sensor. You have to adjust the sensor/magnet mounting, and leave a proper space between the sensor head
and magnet. You can check this with the percentage bar at page “ENGINE”, over 60% means the magnet is directly facing
the sensor, and less than 2% means that the sensor is far from directly pointing at the magnet.
Notice: Only ONE magnet can be mounted on cooling fans of the engine.
STEP6: Please refer to user manual of your helicopter and engine, find the following parameters:
 Main rotor speed, in range: 800 to 2500 RPM;
 main gear ratio, in range: 1.0 to 20.0;
 Engine RPM, in range: 6000 to 25000 RPM. ( Will be calculated automatically )
STEP7: Gov Gain setting, range: 50% to 300%;
Suggestion: 100% for Nitro engine; 150% for gasoline engine;
The higher the gain, the higher the frequency of engine rpm fluctuation.
Governor STARTS to work in all of the following conditions:
 throttle stick position is higher than 20% from cut-throttle;
 When engine speed has been raised above 70% of set RPM;
 When engine speed sensor works correctly.
Governor STOPS working in either one of the following conditions:
 Throttle stick position lower than 10% from cut-throttle;
 Engine speed < 3000 RPM or sensor not working.
Time
Th
ro
tt
le
S
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P
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iti
on
Governor Start Enter GPS
Cruise Mode
Enter Manual
Mode
Governor Stop
Index
Ace One THR out
Tx Throttle
Governor Input
GPS Cruise, GPS Atti. and Atti. Modes take over the throttle, pitch & cyclic positions at the point of switching from Manual
mode. It is essentially how Ace One knows to maintain throttle relative to rotor RPM, not withstanding Go-Home function
hence throttle hold other than Manual Mode will not cut the engine or motor. Unless, it is switched back to Manual Mode.
STEP2
STEP7
STEP6
STEP3
STEP4
STEP5