3W 70i Manuel - Page 16
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intelligent Ignition System with microprozessor controlled auto timing
General
For optimum operation of combustion engines an ignition system with auto timing is necessary. For easy starting
up a spark is ideal in the upper dead point position of the pistion. With increasing rpm a pre-ignition timing up to 30
degree is needed.
This is achieved with our new system using a high precision rpm-check by two magnets built-in the hub of the engine.
The hallsensor transmits the signal to the microprocessor, programmed with our engine characteristic.
Technical specifications
Temperature range :
Voltage range:
Operation voltage
Open - circuit current
Current - consumption
Ignition Voltage
Rpm. max
Magnet red (north pole)
Magnet green (south pole)
Like all other electronic devices the ignition box gets warm under operating conditions. For that reason a simple
airflow has to be guaranteed. Therefore the 4 delivered rubbermounts have to be used for installation, insuring a
one millimeter gap underneath the box.
Cable information
blue wire
red / black with bigger dia, with socket
red / black with plug
yellow / white with socket
Info about red LED
a) Ignition battery switched on:
b) Propeller one turn (flip):
c)
Propeller not being turned (flipped), after
twenty seconds:
- the engine cannot be started by coinsidence if sombody forgot to switch off the ignition
- battery will be protected against incidental discharge
d) in case the LED will not get off when propeller is turned (fliped): hall sensor is not connected or other defect
IIS - IGNITION SYSTEM
o
o
- 40
C / + 65
C
ambient temperature
4,8 V - 7,5 V
five cells NICAD
one - cylinder
6,0 V
18 mA
20 mA
100 mA
950 mA
1100 mA
> 20 kV
12.000 rpm
upper dead point
o
55
before upper dead point
This safty function has two reasons:
more infos: www.3w-modellmotoren.de
0 rpm
1000 rpm
6000 rpm
10.000 rpm
to sensor
to battery
connection for red LED, long contact +
connection for 3W tachometer and other options
LED on
LED off - ignition ready for operation
LED on, ignition prepared but not ready for operation
two - cylinder
6,0 V
18 mA
20 mA
120 mA
1000 rpm
1100 mA
6000 rpm
1300 mA
10.000 rpm
> 20 kV
12.000 rpm
upper dead point
o
55
before upper dead point
0 rpm