Race Technology DL1 MK3, Instruction Manual

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Tel: +44 (0) 1773 537620 Fax: +44 (0) 1773 537621
Email: sales@race-technology.com
6.3 Connecting a wheel speed sensor
Allow a few hours to mount and test the wheel speed sensor correctly, there is no
simple/universal solution to fitting the wheel speed pickup and in some applications it
can be problematic. The wheel speed sensor supplied by Race Technology is a high
quality "Hall Effect" type, it is the same type of sensor that is used in high quality ABS
and traction control systems on high performance production cars. This type of sensor
does not require a magnet to trigger it, just something metal - typically, the sensor is
mounted so it is pointing at a moving bolt head. The sensor should be rigidly mounted
using the bolt hole though the sensor and with the end less than 3mm from the moving
metal object. The closer to the metal object the sensor is mounted, the better the slow
speed performance of the sensor. There are 3 wires connected to the wheel speed sensor:

The black wire that should be connected to the ground terminal of the DL1
CLUB

The red wire that should be connected to the +5v output of the DL1 CLUB

The white wire that should be connected to the wheel speed input (one of the
frequency inputs) of the DL1 CLUB
More information on adding wheel/shaft speed sensors is here:
http://www.race-technology.com/wiki/index.php/Common/AddingWheelSpeedSensors
6.4 Remote start/logging indicator
The DL1 CLUB has the option to have an external start/stop logging switch and an
external indicator fitted. There are no dedicated pins on the DL1 CLUB to do this. It is
done by using one of the analogue inputs as the logging control input and one of the low
side driver outputs (Analogue 9-12) as the logging status output.

Connect a momentary switch between Analogue input 11 and one of the 5v
references. This will put a 5v pulse on the analogue input which will trigger the
start/stop.

Connect the - terminal of an indicator lamp / LED to Analogue input 12 and
the + terminal to either one of the reference outputs or to the main 12v supply.
This means that not only can you start and stop the logging remotely, you can also
monitor whether the device is currently logging - useful when the DL1 CLUB unit is
mounted in a position that cannot be seen from the driver’s seat.