Kanardia miniDaqu, Руководство пользователя, Страница: 28 / 53

6.3 Automatic Start Power Switch miniDaqu — Manual
C
1
2
1
+
- BAT
V
GND 3
+5 V 4
AUX 5
6
F
1
F
2
FUEL
P
E
2
7 FL
2
GND 8
E
1
9 FL
1
Y
1
10 ROTOR
GND
+12 V 11
12
DB9-ECU
DB9-KANARDIA
Open wires
Engine ECU
DB9
Pin
Pin
Wire Colour
Function
Function
Function
6
4*
6*
Black
CAN_GND_1_A
CAN_GND_1_B
Rotax iS HIC B
Rotax iS HIC A
CAN A LOW
8
6
8
Blue
CAN_HIGH_1_A
CAN_HIGH_1_B
CAN B LOW
4
5
Green
Brown
CAN B HIGH
Relay out -
7
5
7
Red
CAN_LOW_1_A
CAN_LOW_1_B
CAN A HIGH
m
in
iD
A
Q
U
D
at
a
A
cq
u
is
it
io
n
U
n
it
K
an
ar
d
ia
9
1*
Yellow
-
Relay out +
GND
* GND is usually not connected
Figure 16: Schematics for Daqu Engine ECU connector. Open wire ends are
connected with Rotax HIC A and HIC B connectors.
Rotax iS engines require so called Start Power Switch . This switch is turned
on during the engine startup procedure. The role of the switch is to provide
startup power for engine ECU. Once engine runs, the switch must be turned
off, as engine provides its own power for ECU.
This means that two additional operations are required in the engine start
sequence comparing to carbureted Rotax engines: turning the start power
switch on to start the ECU and once the engine runs, turning the switch off.
6.3.1 Installation
This process can be also automated with a relay (Start Power Relay) and a
signal sent from Daqu. Schematics is shown on Figure 17. The part which is
added to existing Rotax schematics is drawn inside dotted rectangle.
The relay is connected in parallel to existing start power switch. In the case
of relay or Daqu failure the engine can be still started using start power
switch. The relay must be a double pole type and rated equally as start
power switch. See Rotax installation manual for details. One such relay is
Finder, P/N: 66.82.9.012.0000, but many others can be used as well.
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Kanardia 2019-2022
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