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liS - IGNITION SYSTEM
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: - 400 C / + 650 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 rnA 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) 550 before upper dead point 550 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 contact +
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 LED on, ignition prepared but not ready for operation
twenty seconds:
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
" more infos: www.3w-modelimotoren.de
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