ABB ret650 - Communication; Loss of Communication When Used with LDCM; Specific Settings Related to the IEC;UCA 61850-9-2 LE

• 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 1–4.
16.3.2.1 Specific settings related to the IEC/UCA 61850-9-2LE
communication
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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 37 will be blocked due to conditional blocking. If this
parameter is set to BlockOnLostUTC, the protection functions in list 37 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.
16.3.2.2 Loss of communication when used with LDCM
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If IEC/UCA 61850-9-2LE communication is lost, see examples in figures
112, 113
and
114, the protection functions in table 37 are blocked as per graceful
degradation.
Case 1:
Section 16 1MRK 504 169-UEN A
Station communication
312 Transformer protection RET650 2.2 IEC
Application manual