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120 Connect Devices
WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
6.3.6
Resistor Bridges (Strain Gauge)
Figure 25: Connection Example: Resistor Bridges (Strain Gauge)
Table 137: Terminal Assignment – Resistor Bridge (Strain Gauge)
Resistor
Bridge Designation Function
1
+E1
Measurement input of the reference vU
ref
−E1
Measurement input of the reference voltage −U
ref
+I1
Output reference voltage (+U
ref
)
−I1
Output reference voltage (−U
ref
)
+I2
Not used
−I2
Not used
+E2
Measurement input of the bridge vU
d
−E2
Measurement input of the bridge voltage
−U
d
2
+E3
Measurement input of the reference vU
ref
−E3
Measurement input of the reference voltage −U
ref
+I3
Output reference voltage (+U
ref
)
−I3
Output reference voltage (−U
ref
)
+I4
Not used
−I4
Not used
+E4
Measurement input of the bridge vU
d
−E4
Measurement input of the bridge voltage −U
d