IIS - IGNITION SYSTEM
intelligent Ignition System with microprozessor controlled auto timing
more infos: www.3w-modellmotoren.de
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 :
- 40o C / + 65o C
ambient temperature
Voltage range:
4,8 V - 7,5 V
five cells NICAD
one - cylinder
two - cylinder
Operation voltage
6,0 V
6,0 V
Open - circuit current
18 mA
18 mA
Current - consumption
20 mA
0 rpm
20 mA
0 rpm
100 mA
1000 rpm
120 mA
1000 rpm
950 mA
6000 rpm
1100 mA
6000 rpm
1100 mA
10.000 rpm
1300 mA
10.000 rpm
Ignition Voltage
> 20 kV
> 20 kV
Rpm. max
12.000 rpm
12.000 rpm
Magnet red (north pole)
upper dead point
upper dead point
Magnet green (south pole)
55o before upper dead point
55o before upper dead point
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
to sensor
red / black with bigger dia, with socket
to battery
red / black with plug
connection for red LED, long c
yellow / white with socket
connection for 3W tachometer and other options
Info about red LED
a)
Ignition battery switched on:
LED on
b)
Propeller one turn (flip):
LED off - ignition ready for operation
c)
Propeller not being turned (flipped), after
twenty seconds:
LED on, ignition prepared but not ready for operation
This safty function has two reasons:
- 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
