output relay is an OR-function between the INT-FAIL signal see figure 500 and a
couple of more severe faults that can occur in the IED, see figure 499
IEC04000520 V1 EN
Figure 499: Hardware self-supervision, potential-free alarm contact
TIMESYNCHERROR
e.g. BIM 1 Error
IO fail
IO stopped
IO started
OR
Set
Reset
OR
e.g. IOM2 Error
e.g. IO (n) Error
OR
OR
Internal
FAIL
Set
Reset
LON ERROR
Watchdog
RTE fatal error
RTE Appl-fail
RTE OK
IEC61850 not ready
RTCERROR
FTF fatal error
RTC OK
TIMESYNCHERROR
Time reset
SYNCH OK
Settings changed
NUMFAIL
Set
Reset
OR
Internal
WARN
Set
Reset
OR
NUMWARNING
OR
1 second pulse
SETCHGD
RTCERROR
en04000519-1.vsd
IEC04000519 V2 EN
Figure 500: Software self-supervision, IES (IntErrorSign) function block
1MRK502052-UEN B Section 20
Basic IED functions
1099
Technical manual
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