User manual

84 Rockwell Automation Publication 1769-UM011I-EN-P - February 2013
Chapter 6 Place, Configure, and Monitor I/O
To validate the proposed placement of I/O modules in your CompactLogix
system, perform this procedure.
1. Verify that your 1769-L3x controller resides on the leftmost side of the
bank.
2. Verify that you have placed no more than three I/O modules between your
controller and power supply (bank 0).
Placing more than three I/O modules in bank 0 would exceed the distance
rating of four and invalidate your system.
3. Validate the number of I/O modules your power supply can support.
In a single-bank system, make sure you have not placed more than eight I/
O modules between the power supply and end cap (bank 1).
In a multi-bank system, make sure that your additional bank(s) do not have
more than eight I/O modules on either side of the additional power
supply.
IMPORTANT
In a single-bank system, the power supply can support up to eight I/O modules
as long as the modules’ power consumption does not exceed the power
supply’s capacity.
So, in a single-bank system, you may not have more than eleven total I/O
modules, three to the left of your power supply and eight to the right.
If your system requires additional I/O modules, you must add an additional
bank.
IMPORTANT
In a multi-bank system, you may place up to eight I/O modules on either side
of the additional power supply so long as the power consumed by these
modules does not exceed the power supply’s capacity.
1769-L3x
Controller
Bank 1
Power Supply
End Cap
Single-Bank System
Bank 0