Connection Examples; Figure 10: Connection Example - WAGO 750-469 Manual

42 Connect Devices
6.2

Connection Examples

Use shielded signal lines!
Only use shielded signal lines for analog signals and I/O modules which are
equipped with shield clamps. Only then can you ensure that the accuracy and
interference immunity specified for the respective I/O module can be achieved
even in the presence of interference acting on the signal cable.

Figure 10: Connection Example

Ensure good grounding practices!
When connecting the thermocouples, good grounding practices must be
guaranteed between the machine and the sensors that are connected to the
module. Insufficient grounding can lead to common mode voltages, which may
distort the measuring result.
Due to the differential inputs, grounded and ungrounded thermocouples can be
connected in the following ways.
WAGO-I/O-SYSTEM 750
750-469 2AI Thermocouple
Manual
Version 1.1.0