1756-Irt8I Diagrams - Allen-Bradley 1756-IF8I User Manual

1756-IRT8I Diagrams

Channel 0
CJC 0
IN_0/RTD D
IN_0(+)/A
IN_0(-)/B
IN_0/RTD C
Channel 1
IN_1/RTD D
IN_1(+)/A
IN_1(-)/B
IN_1/RTD C
Channels 2...5 (not shown - Same diagrams as channels 1 and 7.)
Channel 6
IN_6/RTD D
IN_6(+)/A
IN_6(-)/B
IN_6/RTD C
CJC 1
Channel 7
IN_7/RTD D
IN_7(+)/A
IN_7(-)/B
IN_7/RTD C
Figure 13 - 1756-IRT8I Module Block Diagram
Field Side
Isolated Power
ADC CJC
(Channel 0)
Signal Conditioning
and A/D Converter
Vref
Isolated Power
Signal Conditioning
and A/D Converter
Vref
Isolated Power
Signal Conditioning
and A/D Converter
Vref
ADC CJC
(Channel 6)
Isolated Power
Signal Conditioning
and A/D Converter
Vref
Represents Channel Isolation
Rockwell Automation Publication 1756-UM540E-EN-P - December 2017
Temperature-sensing Analog Modules
Backplane Side
DC-DC
Converter
DC-DC
Isolator
Shutdown
Circuit
DC-DC
Converter
Isolator
DSP
DC-DC
Converter
Isolator
Nonvolatile
Memory
DC-DC
Converter
Isolator
Chapter 4
RIUP
Circuit
System
+5V
1
7
5
6
B
A
C
K
P
L
A
Backplane
N
ASIC
E
Status
Indicators
79