The ignition sensor unit is mounted on a DIN rail on the engine in direct proximity to the ignition coil of the first cylinder in the firing order, which is equipped with a knocking sensor or in the vicinity of the ignition controller.
For information on wiring connections, please refer to section Wiring of the Ignition Sensor Unit (ISU).
For diesel and pilot injection engines, a camshaft sensor is used instead of an ignition sensor unit (ISU). Refer to the section Mounting the Camshaft Sensor. No ignition sensor unit is needed when using a MOTORTECH ignition sensor unit with ASO (e. g. MIC4) output either. You can find information in the section Wiring for Ignition Controller with ASO Output.
Mounting on the engine The ignition sensor unit is fully sealed and therefore resistant to vibrations. When mounting on the engine or in an environment in which vibrations arise, only the connector must be secured e.g. by means of a cable tie. Please note that the contacts of the connector are bare and must be protected against moisture and contamination. If the engine should be in such a location, the ignition sensor unit can be, for example, mounted in a junction box or housed in a control cabinet. |
No ignition sensor unit is required for the ASO output If you use a MOTORTECH ignition controller (e. g. MIC4) with auxiliary synchronization output (ASO), you do not need any ignition sensor unit (ISU). In this case, the ignition pulse is transmitted to the DetCon via the ASO output. |
Overview of Use: Ignition Sensor Unit and Load Resistance Jumper The following table provides an overview of the applications for which you must use the ignition sensor unit (ISU) and when the jumper Load Resistance on the DetCon device must be removed:
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