• Main menu/Configuration/Analog modules/MUx:92xx. The corresponding
settings are also available in PST (PCM600).
• Main menu/Configuration/Communication/Merging units configuration/
MUx:92xx. The corresponding settings are also available in ECT (PCM600).
XX can take value 01–12.
20.3.2.1 Specific settings related to the IEC/UCA 61850-9-2LE communication
The process bus communication IEC/UCA 61850-9-2LE has specific settings, similar
to the analog inputs modules.
If there are more than one sample group involved, time synch is mandatory. If there is
no time synchronization, the protection functions will be blocked due to condition
blocking.
CTStarPointx: These parameters specify the direction to or from object. See also
section
"Setting of current channels".
SyncLostMode: If this parameter is set to Block and the IED hardware time
synchronization is lost or the synchronization to the MU time is lost, the protection
functions in the list 74 will be blocked due to conditional blocking. If this parameter
is set to BlockOnLostUTC, the protection functions in list
74 are blocked if the IED
hardware time synchronization is lost or the synchronization of the MU time is lost or
the IED has lost global common synchronization (i.e. GPS, IRIG-B or PTP). SYNCH
output will be set if IED hardware time synchronization is lost. MUSYNCH output will
be set if either of MU or IED hardware time synchronization is lost.
20.3.2.2 Loss of communication when used with LDCM
If IEC/UCA 61850-9-2LE communication is lost, see examples in figures
327, 328
and 329, the protection functions in table 74 are blocked as per graceful degradation.
Case 1:
IEC13000298-2-en.vsd
IEDIED
MU
OK
OK
Direct transfer trip (DTT)
local remote
IEC13000298 V2 EN
Figure 327: Normal operation
Section 20 1MRK 502 071-UEN -
Station communication
688 Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
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