11 Commissioning
86 PHLOX II Ignition Control System
This paragraph concerns only inductive pick-ups
For inductive pick-ups, the trigger level is dependent on the speed and can be setup with the help
of a curve (Par. 7700-7704, 7710-7714 or via the menu Graphic->Curve->Trigger-Level Induc-
tive Pick-Up 1). It is important to set up this curve properly according to the pick-up and measur-
ing wheel properties, otherwise problems with speed measuring and timing can occur. As a start-
ing point following curve might be used:
This curve needs to be corrected if problems with speed measuring or timing occur. In this case it
is recommended to measure the pick voltage of the pick-up signal output at different speeds and
to set the trigger-levels for those speeds at half of the measured voltage. Generally speaking, it is
good practice to depart from the very low trigger levels (e.g. 50 or 100mV) as soon as speed in-
creases which make speed sensing quite sensitive to signal disturbances.
Camshaft index setup
This measuring method does not require a cam index:
Par. 4005 = 0
Speed measuring wheel setup
Configure the speed measuring wheel according to its physical properties:
Par. 4021 = 0 for a wheel equipped with teeth
Par. 4021 = 1 for a wheel equipped with holes
Par. 1 = Number of teeth / holes.
If the measuring wheel has a single tooth/hole gap (firmware variant B1), the gap is
counted as 1 tooth / hole. For example a 120-1 teeth wheel Par. 1 = 120.
If the measuring wheel has a double tooth/hole gap (firmware variant B2), the gap
is counted as 2 teeth / holes. For example a 60-2 teeth wheel Par. 1 = 60
Pick-up angle position setup
To Next Page
Loading...
Need help?
General
