18
Device Description
WAGO-I/O-SYSTEM 750
750-469 2AI Thermocouple
Manual
Version 1.1.0
3.2.3
CAGE CLAMP
®
Connectors
Figure 3: CAGE CLAMP
®
Connectors
Table 6: Legend for Figure “CAGE CLAMP
®
Connectors”
Channel
Designation
Connector Function
1
+TC 1
1
Sensor 1: +TC
−TC 1
2
Sensor 1: −TC
Common (ground)
3
Common (ground)
Shield (screen)
4
Shield (screen)
2
+TC 2
5
Sensor 2: +TC
−TC 2
6
Sensor 2: −TC
Common (ground)
7
Common (ground)
Shield (screen)
8
Shield (screen)
Only use connections 3 and 7 as a signal ground!
The current between connections 3 and 7 must be less than 0.1 A. A current
greater than 0.1 A can destroy the I/O module. Only use connections 3 and 7 as a
signal ground.
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.