66 Rockwell Automation Publication 2100-IN012G-EN-P - August 2016
Chapter 4 Installing and Removing Plug-in Units
5. Wire the existing Ethernet power supply unit output to the ‘1’ terminals,
left and right branches.
6. Wire the other unique power supply to the ‘2’ terminals, left and right
branches.
7. Repeat this process for each existing power supply unit and two-branch,
8 A circuit within the 24V DC infrastructure.
8. To validate proper wiring of the two-branch redundant unit, power up
both 24V DC power supplies.
At this point, all V-in and V-out status lights on each 1606-XL module
illuminate. If you shut off one of the power supply units, the V-in lights
on the 1606-XL module that connects to that power source turn off,
which indicates input power was lost. However, the V-out light on that
same 1606-XL module remains on, which indicates the second power
supply is still providing 24V DC power. Therefore, the devices on that
circuit remain on.
This process can be repeated by alternating the power supplies that were
left on or turned off.
TIP Use the Ethernet Power Supply table in the existing MCC one-line document
to help see where the two-branch 24V circuits exists. More information can
be found in the CENTERLINE 2100 Motor Control Center with IntelliCENTER
Technology Using an EtherNet/IP Network Technical Data,
publication 2100-TD031
.
IMPORTANT If the loss of one power supply causes branch power loss in the MCC 8 A
circuit, correct the wiring of the two-branch redundant unit.
Input Source 1
Left and Right
Input Source 2
Left and Right
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