Table 322: Explanations of internal signals
Name of signal Reasons for activation
Internal Fail This signal will be active if one or more of the following internal
signals are active; Real Time Clock Error, Runtime App Error,
Runtime Exec Error, SW Watchdog Error, File System Error
Internal Warning This signal will be active if one or more of the following internal
signals are active; IEC 61850 Error, DNP3 Error
Real Time Clock Error This signal will be active if there is a hardware error with the real
time clock.
Time Synch Error This signal will be active when the source of the time
synchronization is lost, or when the time system has to make a
time reset.
Runtime Exec Error 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 components, changing of
setting groups, loading or unloading of application threads.
IEC61850 Error This signal will be active if the IEC 61850 stack did not succeed
in some actions like reading IEC 61850 configuration, startup,
for example.
SW Watchdog Error This signal will be activated when the IED has been under too
heavy load for at least 5 minutes. The operating systems
background task is used for the measurements.
Runtime App Error 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, RUNNING, for example.
Setting(s) Changed This signal will generate an internal event to the internal event
list if any setting(s) is changed.
Setting Group(s) Changed This signal will generate an internal event to the Internal Event
List if any setting group(s) is changed.
Change Lock This signal will generate an internal Event to the Internal Event
List if the Change Lock status is changed
File System Error This signal will be active if both the working file and the backup
file are corrupted and cannot be recovered.
DNP3 Error This signal will be active when DNP3 detects any configuration
error during startup.
15.1.4.2 Run-time model
The analog signals to the A/D converter is internally distributed into two different
converters, one with low amplification and one with high amplification, see Figure 160.
Section 15 1MRK 505 277-UUS C
Basic IED functions
378
Technical Manual
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