Chapter 9—C445 Logic Engine and Expansion I/O
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Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Chapter 9—C445 Logic Engine and Expansion I/O
Power Xpert
in
Control Logic Engine
The Logic Engine in the C445 Motor Management Relay has many applications. From
monitoring temperature sensors attached to the windings of a motor to using it for
distributed control and even eliminating a central controller. The C445 logic engine uses
Function Block programming with an extensive, powerful instruction set and wide ranging
data types. It can access the local I/O on the Base Control module, the expansion I/O as
well as C445 system parameters allowing monitoring and control of the overload relay.
Power Xpert Logic Programming and I/O Configuration Tool
The software tool is used to create custom logic programs that reside in the C-445 MMR.
The tool is also used to configure expansion I/O that is controlled from the logic engine
over an RS-485 communication link. Users can create custom programs by selecting
function blocks, creating variables, referencing remote I/O data items, setting properties,
and accessing C-445 system variables from the logic editing screen. It is also possible to
monitor live program execution in debug mode.
