O.S. engine EC-11 - Page 5

PWM signal
[W
：
Signal
／
B
：
GND] VIH=2.6V
，
VIL=0.4V
，
MAX5.5V
PWM signal
1520μs (neutral) ±420μs
PWM +
→
increase fuel supply The range of increase and decrease is ±30%.
[W
：
Signal
／
B
：
GND] VIH=2.6V
，
VIL=0.4V
，
MAX5.5V
・
the connector for serial communication
UART(TTL logic level is 3.3V.)
[R
：
DC+5V
／
W
：
TX
／
G
：
RX
／
B
：
GND]
Pressure sensor
[R
：
DC+5V
／
W
：
Signal
／
B
：
GND]
PT100 Platinum resistance thermometer
[G
：
No polarity
／
G-W
：
No polarity]
PT100 Platinum resistance thermometer
[Y
：
No polarity
／
Y-W
：
No polarity]
Negative pressure sensor
[R-W
：
DC+5V
／
B
：
Signal
／
B-W
：
GND]
Serial communication
Configuration
[A]
A-1
・ To be connected to a receiver or throttle signal cable from flight controller.
Specification
A-3
・To be connected to Fuel pressure sonsor via Pump connection cord.
A-4
Specification
Specification
A-1
Fuel trim signal input
・
ECU controls quantity of fuel injection normally, so correction signal from the
outside is not necessary. Leave it unconnected or connect 1520μs (neutral) PWM
signal.When pulling out during operation, it holds the state just before.
Throttle signal input
Specification
Set the travel width so that the PWM signal width is 1100 μs or less on the throttle
closed side and the PWM signal width is 1900 μs or more on the throttle opening
side.
・
In case manual adjustment of fuel injection is necessary, connect to a receiver or
fuel injection signal cable from flight controller.
A-2
Specification
・To be used to monitor parameters or to connect to a computer for initial setting.
A-4
・To be connected to Manifold pressure sensor.
Specification
Manifold air pressure sensor
Specification
Cylinder head temperature sensor
4
Fuel pressure sensor
・To be connected to the temperature sensor of the intake port of the throttle valve.
Intake air temperature sensor
A-4
・ To be connected to the temperature sensor of the cylinder head.
JST
04R
-
JWPF
-
VSLE
-
S