The MIC4 has the following electrical characteristics.
Feature |
Value |
---|---|
Power consumption |
max. 100 W at 24 V |
Power supply |
Nominal voltage: 24 V DC |
Required current |
Max. current 7 A. An estimation of the power requirements can be found after this table. |
Number of outputs |
8, 12 or 16 outputs |
Firing angle |
The size of the firing angle depends on the max. overspeed. The smallest firing angle per output bank can be calculated using the following formula: |
Ignition frequency |
With full energy output (all 16 ignition outputs with 300 mJ), an ignition frequency of 250 Hz as continuous load is possible. With less ignition energy or in case of a brief overload, 333 Hz is possible. The maximum output load of 75 W must not be exceeded. 2-stroke engine: 4-stroke engine: |
Estimation of Current Requirements
These current values are based on a nominal speed of 1800 rpm and 300 mJ energy.
Outputs |
Voltage |
Required current |
Voltage |
Required current |
---|---|---|---|---|
8 |
24 V |
2.3 A |
12 V ** |
4.6 A |
12 |
24 V |
3.3 A |
12 V ** |
6.4 A |
16 |
24 V |
4.3 A |
12 V ** |
6.8 A * |
* Ignition energy is limited to 250 mJ.
** Nominal voltage 24 V DC
Electrical Data for Inputs and Outputs
The inputs and outputs of the ignition controller have the following electrical data:
Inputs and outputs |
Values |
---|---|
Analog current input |
Current range: 0 mA to 20 mA (adjustable in MICT) |
Analog voltage input |
Voltage range: 0 mA to 10 mA (adjustable in MICT) |
Auxiliary analog input supply voltage |
5 V to 24 V / 50 mA depending on the configuration in the MICT |
Binary input (Start/Stop) |
Wiring Input current: max. 20 mA |
Binary input (schedule A/B) |
Wiring Input current: max. 20 mA |
Binary input (GPI, general purpose input) |
Wiring Input current: max. 20 mA (Function dependent on the configuration in MICT, see Inputs/Outputs – Inputs) |
Go/NoGo and GPO outputs |
One GPO (General Purpose Output) and one Go/NoGo output Implementation as optical MOSFET relay Maximum switching voltage: 32 V DC Peak/steady current: max. 100 mA DC Output power: max. 2.5 W Internal resistance: 58 Ω to 60 Ω Activation delay: 0.5 ms/100 mA load max. Deactivation delay: 0.2 ms / max. 100 mA load If a short is found at the output, a safety circuit, which makes the output highly resistive, is found at the output, so that the current sets itself at 50 mA to 60 mA. |
Signal LED |
Six LEDs are used as status indicators. |
ASO output |
TTL level (5 V) |
Pickup input |
Impedance: 10 kΩ The voltage supply for active pickup can be set using the MICT from 5 V to 24 V. Max. frequency for the pickups: 10 kHz The formula for determining the frequency of the pickups can be found in the note following this table. For a pickup output impedance of 120 Ω to 10 kΩ, the pickups connected to the MIC4 may not have a higher voltage than ±40 V and the connected power may not exceed 1 W. |
Ignition coil outputs |
Output voltage: max. 250 V Output energy in normal operation: max. 300 mJ (depending on the ignition coils used) Output energy in the start phase (boost): max. 500 mJ |
Frequency of the pickups The frequency of the pickup is calculated as per the following formula. |