Rockwell Automation 1756-OF8I ControlLogix Eight-channel Isolated Analog I/O Modules - Manual (Page 99)

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014 99
1756-OF8I Isolated Analog Output Module Chapter 5
Field-side Circuit Diagrams
The following diagrams show the field-side circuitry for the 1756-OF8I module.
Figure 21 - 1756-OF8I Module Field-side Circuit with Current Output
Figure 22 - 1756-OF8I Module Field-side Circuit with Voltage Output
RTN-x
+V
OUT_x/V
D/A Converter
OUT_x/I
0.047
μ
F 0.0022
μ
F
46
Ω
Current
Amplifier
Iout
-13V
Current
Output Device
0…1000
Ω
5V Vref
Power
Supply
RTN-x
+13V
OUT_x/V
D/A Converter
Gnd_x
5V Vref
OUT_x/I
4640
Ω
0.047
μ
F 0.0022
μ
F
21
Ω
Voltage
Amplifier
Vout
Vsense
-13V
Voltage
Output Device
>1000
Ω