module. This contact is closed when the IED either does not have auxiliary power,
or when one or more error conditions are present in the IED (for example harware
error).
Some output signals are available from the INTERRSIG function block. The
signals from this function block are sent as events via IEC 61850 to the station
level of the control system. These signals can also be connected to binary outputs
for signalization via output relays or they can be used as conditions for other
functions if required/desired.
Individual error signals from I/O modules can be obtained from respective module
in the Signal Matrix tool. Error signals from time synchronization can be obtained
from the INTERRSIG function block via two outputs TSYNCERR and RTCERR .
18.5.5.1 Internal signals
M11401-173 v9
Self supervision provides several status signals that give information about the
internal status of the IED. For this reason they are also called internal signals.
These internal signals , available on local HMI under Main menu/
Diagnostics/IED status/General, can be divided into two groups.
• Standard signals are always presented in the IED, see table
586.
• Hardware dependent internal signals are collected depending on the hardware
configuration, see table
587.
Table 586: Self-supervision's standard internal signals
Name of signal
Description Displayed on
local HMI as
Reasons for activation
FAIL Internal
Fail status
Internal fail This signal will be active if one or more of the
following internal signals are active;
LMDERROR, WATCHDOG, APPERROR,
RTEERROR, or any of the HW dependent
signals
WARNING
Internal
Warning
status
Internal
warning
This signal will be active if one or more of the
following internal signals are active;
RTCERROR, IEC61850ERROR
RTCERROR
Real Time
Clock
status
Real time
clock
This signal will be active when there is a
hardware error with the real time clock.
TIMESYNCHERROR Time
Synchroni
zation
status
Time synch
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.
RTEERROR
Runtime
Execution
Error
status
Runtime
execution
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.
Table continues on next page
Section 18 1MRK 506 382-UEN A
Security
788 Line distance protection REL650 2.2 IEC
Technical manual
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