Bosch MS 6 Manual page 23

2.3.8 Ignition Trigger Wheel
Bosch Motorsport
CAN-networks need a 120 Ohm termination at 2 ends of the wiring.
The MS 6 is able to switch on an internal 120 Ohm termination, set CWCANx_TERM true
to enable the termination.
For wiring layout, respect the common rules of failure reduction like separated sensor
power supply between important system sensors (e.g. camshaft detection) and measure
options (e.g. damper position).
Be ensure HP-injectors, electronic throttles and other high frequently switched actuators
are connected within the wiring limits of 2.5 m and all wires are manufactured as twisted
pairs.
If using a preinstalled production harness, first verify the way of sensor- and actuator con-
trols.
Often production parts have to be connected to 12 V power supply and actuators are
controlled in different ways. The production harness may need to be modified.
Office harness
Reduced layout to realize communication between PC, MS 6 device and Display DDU, re-
commended for flash configuration, display configuration and installation tasks. Bosch
Motorsport part number: F 02U V01 809
To detect the engine position and to calculate the exact crankcase position, the system as-
sumes toothed trigger wheels for proper operation. Recommended is to use 60 (-2) teeth
for the flywheel and one teeth for the camshaft detection. Modifications of the mechanical
designs are possible, such as using quick-start production designs for the camshaft or dif-
ferent number of teeth for the flywheel (limited to 30 to 60 teeth).
NOTICE
Less number of teeth reduces the accuracy of the system angle meas-
urement.
Not usable are flywheels with 4-1 or 6-1 teeth. Please follow the description below as re-
commendation for the mechanical dimensions.
Recommended values:
– D = min. 160 mm
– h1 = 3.5 mm
– h2 = h1/2 (important for the use of inductive sensor)
– LSKW = 0.8 mm +/- 0.3 mm
– t = min. 5 mm
– LNSW = 1.0 mm +/- 0.5 mm
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