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Fault tracing Chapter 13
Fault tracing and repair
Also the internal signals, such as INT--FAIL and INT--WARNING can be connected to binary
output contacts for signalling to a control room.
In the IED Status - Information, the present information from the self-supervision function can
be viewed. Indications of failure or warnings for each hardware module are provided, as well as
information about the external time synchronization and the internal clock. All according to ta-
ble 23. Loss of time synchronization can be considered as a warning only. The REx670 IED has
full functionality without time synchronization.
1.2 Using front-connected PC or SMS
Here two summary signals appear, self-supervision summary and numerical module status sum-
mary. These signals can be compared to the internal signals as:
• Self-supervision summary = INT--FAIL and INT--WARNING
• CPU-module status summary = INT--NUMFAIL and INT--NUMWARN
When an internal fault has occurred, you can retrieve extensive information about the fault from
the list of internal events available in the SMS part:
TRM-STAT TermStatus - Internal Events
The list of internal events provides valuable information, which can be used during commission-
ing and during fault tracing.
Application READY / FAIL This signal will be active if one or more of
the application threads are not in the state
that Runtime Engine expects. The states
can be CREATED, INITIALIZED, RUN-
NING, etc.
RTE READY / FAIL This signal will be active if the Runtime
Engine failed to do some actions with the
application threads. The actions can be
loading of settings or parameters for com-
ponents, changing of setting groups, load-
ing or unloading of application threads.
IEC61850 READY / FAIL This signal will be active if the IEC61850
stack did not succeed in some actions like
reading IEC61850 configuration, startup
etc.
LMD READY / FAIL LON network interface, MIP/DPS, is in an
unrecoverable error state.
LDCMxxx READY / FAIL Line Differential Communication Error sta-
tus
OEM READY / FAIL Optical Ethernet Module error status.
HMI Signal Name: Status Description
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