©2012 DJI Innovations. All Rights Reserved.
16 |
B7
Engine Governor
In 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 it is not set incorrectly.
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:
50% for Nitro engine; 150% for gasoline engine;
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
er
vo
P
os
iti
on
Governor Start Enter GPS Atti.
or Atti. Mode
Enter Manual
Mode
Governor Stop
Index
WKH THR out
Tx Throttle
Governor Input
GPS Atti.
and
Atti
.
Modes
takeover the throttle, pitch & cyclic positions at the point of switching from
Manual mode
. It is
essentially how WKH knows to maintain throttle relative to rotor RPM, hence throttle hold or throttle cut switch will not cut the
engine or motor. Unless, it is switched back to
Manual Mode
.
STEP2
STEP7
STEP6
STEP3
STEP4
STEP5
