Wiring of Thermocouples

All cables must be fed through a cable gland at a suitable position of the CAN bus module. Use suitable wire end ferrules for each wire that you place on a terminal.

0930_0_CAN-Bus-Box_Verkabelung_Analoge_Eingaenge_Thermoelemente

Connect the first thermocouple to input 1. Optionally, connect the second thermocouple to input 2 (see section Installation Locations of Thermocouples). Depending on the layout, connect the thermocouples as follows:

Layout

Input 1 (T1)

Input 2 (T2)

Before and after catalytic converter (Before & After Cat)

Before catalytic converter

After catalytic converter

After catalytic converter (One After Cat)

After catalytic converter

In two exhaust gas lines after catalytic converter (Two After Cat)

First exhaust gas line: after catalytic converter

Second exhaust gas line: after catalytic converter

 

If you do not use input 2, bridge this input with a jumper between the terminals + and –. This prevents the measuring circuit from being disturbed by interfering radiation.

Only use thermocouples with shielded leads. When connecting, make sure that the terminal designation corresponds to the polarity of the thermocouples.

Connect the thermocouples as follows:

900_Abmessungen_EasyNOx-in-Gehäuse

Connect the shields of the thermocouple leads with the cable glands. Do not lay the shields inside the CAN bus module.