Haltech S4 Hall Effect Sensor - Manual (Page 7)

Figure 5: Typical 6 cylinder/ 3 rotor application
8 Cylinder
For an eight cylinder 5 magnets are required in total positioned exactly 90 ° apart. A
south pole needs to trigger the sensor before the trigger for cylinder No 1.
Figure 6: Typical 8 cylinder application
The ignition set-up for the S4 needs to be configured in the following way:
Trigger Edge: Falling
Trigger type: Standard
Home Edge:
Falling or Rising
6 CYLINDER / 3 ROTOR ENGINE
For a six cylinder 4 magnets are required in total. The three north poles are positioned
exactly 120° apart while a south pole need to trigger the sensor before the trigger for
cylinder No 1.