Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - Manual (Page 31)

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 31
Installation and Wiring Chapter 3
You can install as many modules as your power supply can support. However,
all 1769 I/O modules have power supply distance rating. The maximum power
supply distance rating is 8, which means that a module may not be located
more than 8 modules away from the system power supply. The illustration
below shows how power supply distance is determined.
1
1 1 2 3 4 3 2
2 3 4 5 6 7 8
Compact I/O Compact I/O Co
m
pa
ct
I/
O
Compact I/O
En
d Cap
MicroLogix 1500 Controller
with Integrated System
Power Supply
Syste
m
Po
wer Su
pp
ly
Compact I/O Compact I/O Co
m
pa
ct
I/
O
En
d Ca
p
C
omp
actLog
ix Co
nt
roller
or
I/O
Commu
nicat
io
n
Ada
pte
r
Compact I/
O
Compact I/O Compact I/O
OR
Power Supply Distance
Power Supply Distance
Compact I/O Compact I/O Co
m
pa
ct
I/
O
Compact I/O