24 Rockwell Automation Publication 5094-UM001C-EN-P - April 2019
Chapter 1 Digital I/O Module Operation in a Logix 5000 Control System
Construct a 5094 FLEX 5000
I/O System
FLEX 5000 I/O is a small, modular I/O system for distributed applications that
performs all of the functions of rack-based I/O. The FLEX system contains the
components pictured below.
• Adapter - transfers read and write configuration data to and from the
I/O module
• Terminal base - contains a terminal strip to terminate wiring for two- or
three-wire devices
• I/O modules - contains the bus interface and circuitry needed to perform
specific functions related to your application
• End cap - basically a dust cap for the last module in a rack
FLEX 5000 I/O System Power
FLEX 5000 I/O SA Field-Side Power
• FLEX 5000 I/O modules use terminal base (TB) assemblies to connect
field-side wiring.
• SA field-side power source is connected to the terminal base (TB)
assemblies via SA Power terminals.
• You must limit the SA field-side power source to 10 A, max, at 18...32V
DC.
• Confirm that the external module power supply is adequately sized for the
total SA field-side power current draw in the module.
For example, if the total module power current draw, including current
inrush requirements, is 5 A, you can use a module power supply that is
limited to 5 A.
• You must use SELV-listed power supplies for module power if there are
functional safety modules that are connected to the FLEX 5000 I/O
system.
Adapter Terminal BaseI/O Module End Caps
STATUS
NET
LINK 1
LINK 2
5094-AENTR
EtherNet/IP
™
Adapter
FLEX 5000
TM
I/O
PRP
DLR
POWER
X100
X10
X1
IP ADDRESS
ATTENTION: Power to this equipment and all connected I/O must be
supplied from a source that is isolated from Mains power via an approved
isolating transformer constructed with basic insulation.
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