16 Rockwell Automation Publication 5069-UM007A-EN-P - February 2019
Chapter 2 Compact 5000 EtherNet/IP Adapter Power Requirements
When the MOD power source is turned on, that is, I/O modules receive
system-side power, the following occurs.
1. The adapter draws current from the MOD power bus current and passes
the remaining current through to the next module.
2. The next module draws MOD power bus current and passes the
remaining current through to the next module.
3. The process continues until MOD power bus current needs are met for
all modules.
For more information on the current that the modules draw from the MOD
power bus, see the Compact 5000 I/O Modules Specifications Technical Data,
publication 5069-TD001
.
SA Power Bus
SA power provides power to devices that are connected to some
Compact 5000 I/O modules. Remember the following:
• Some Compact 5000 I/O modules draw current from the SA power bus
and pass the remaining current to the next module.
• Some Compact 5000 I/O modules only pass current along the SA
power bus to the next module.
• A Compact 5000 I/O EtherNet/IP adapter and the I/O modules that
are installed with it can have multiple SA power buses. You use a 5069-
FPD field potential distributor to establish a new SA power bus. The
new SA power bus is isolated from the SA power bus to its left in the
system.
• If AC and DC modules that require SA power are installed with a
Compact 5000 I/O EtherNet/IP adapter, you must use a 5069-FPD
field potential distributor to establish a new SA power bus.
You install one set of the same module types, for example, DC modules,
to the first SA power bus. Then you install the other set, for example,
AC modules to the second SA power bus. That is, the SA power bus to
the right of the 5069-FPD field potential distributor.
The SA power source limitations described previously apply to each
isolated SA power bus separately.
IMPORTANT You must limit the SA power source to one of the following:
• If you use DC voltage, you must limit the SA power source to 10
A, max at 18…32V DC.
• If you use AC voltage, you must limit the SA power source to 10
A, max at 18…240V AC.
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