11 Commissioning
PHLOX - Ignition Control System 107
11.9 Ignition energy
The ignition energy in use can be set in a quite wide range. 32 different energy levels are availa-
ble from app. 25 mJ (Ignition energy level 0) up to 280 mJ (Ignition energy level 31). The con-
trol unit continuously measures the energy stored in the ignition capacitor and gives feedback of
the active ignition energy in Par. 13600-13615. The current setpoints are displayed for each cyl-
inder in Par. 3950-3965
The ignition energy set points of all cylinders are found by the addition of 3 terms:
The fix common ignition energy setpoint
The external common ignition energy setpoint offset
The cylinder specific ignition energy correction
The ignition energy set points are limited in 2 steps. First the common ignition
energy set point (common energy set point + external common energy offset)
will be limited in a range of [0; 31]. Additionally, the final ignition energy se
points (common ignition energy set point + cyl. individual energy set point off-
sets) will again be limited in a range of [0; 31]
11.9.1 Fix common ignition energy set point
To setup the fix ignition energy set point, perform following configuration:
Par. 1940 = fix common ignition energy set point (from 0 for 25mJ to 31 for 280 mJ).
As a starting point, an ignition energy of 20 (ca. 180 mJ) would be recommendable.
11.9.2 External common ignition energy set point offset
The external common energy set point offset can be applied in 2 ways:
using an analogue set point, using the 0-5V or 4-20mA analog input (for example a po-
tentiometer)
using a digital input as tristate switch (3 positions: +, -, neutral)
Whichever method is used, the external common ignition energy set point offset displayed
in Par. 3947 is added to the fix common ignition energy set point [Par. 1940] calculate the
common ignition energy set point [Par. 3940], limited to the range [0; 31].
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