Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules User Manual
Page 173
Publication 1756-UM009C-EN-P - December 2010
173
Isolated Analog Output Modules (1756-OF6CI and 1756-OF6VI) Chapter 8
1756-OF6VI Module Block Diagram
DC-DC
Converter
D/A Converter
RIUP
Circuit
43501
Vref
Optos
Serial
EEPROM
FLASH
ROM
SRAM
System
+5V
Field Side
Backplane Side
DC-DC
Shutdown
Circuit
+/- 15V
+ 5V
Details of the 1756-OF6VI output
circuitry are on
Voltage
Regulator
Voltage
Regulator
Voltage
Regulator
DC-DC
Converter
D/A Converter
Vref
Optos
+/- 15V
+ 5V
DC-DC
Converter
D/A Converter
Vref
Optos
+/- 15V
+ 5V
Micro-
controller
Backplane
ASIC
3 of 6 channels
= Channel Isolation
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