Chapter 9—C445 Logic Engine and Expansion I/O
172
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Special Function Group
FAULT—User-Defined Fault Instruction
The FAULT function block can be used to generate up to 50 user-defined events—faults,
warnings and inhibits. An event can be generated by providing an event code to the FCODE,
specifying the type of event using the FMODE and triggering the event using the FTRIG.
The function block indicates an active event by setting FAULTACT, WARNACT or INHIBACT
to TRUE.
Event Types
Fault
—This is a latched event, meaning the event remains true even after FTRIG transitions
to FALSE. The latched fault can be cleared using one of the standard C445 fault reset
methods provided that FTRIG is FALSE when the fault reset is issued. A fault will stop a
running motor.
Warning
—This is a non-latched event, meaning the event will clear when FTRIG transitions
to FALSE. A warning will not stop a running motor.
Inhibit
—This is a non-latched event, meaning the event will clear when FTRIG transitions to
FALSE. An inhibit will stop a running motor.
Parameter
Data type
Description
FCODE
UINT
Event Code
Range: 1000–1049
Note: Same code cannot be used with multiple FAULT blocks.
FTRIG
BOOL
Level sensitive trigger
FMODE
UINT
Event Mode
0 = Off
1 = Warning
2 = Inhibit
3 = Fault
FAULTACT
BOOL
TRUE when fault event is active
WARNACT
BOOL
TRUE when warning event is active
INHIBACT
BOOL
TRUE when inhibit event is active
