ABB Relion 670 Series Applications Manual page 539

1MRK 511 401-UUS F
IEC/UCA 61850-9-2LE
IEC10000075 V2 EN-US
Figure 241: Setting example without time synchronization
It is also possible to use IEC/UCA 61850-9-2LE communication without time synchronization.
Settings on the local HMI under Main menu/Configuration/Time/Synchronization/
TIMESYNCHGEN:1/IEC61850-9-2:
HwSyncSrc : set to Off
•
• SyncLostMode : set to No block to indicate that protection functions are not blocked
SyncAccLevel : set to unspecified
•
Two status monitoring signals with no time synchronization:
• SYNCH signal on the MUx function block indicates that protection functions are blocked due
to loss of internal time synchronization to the IED. Since
signal is not set.
• MUSYNCH signal on the MUx function block is set if the datastream indicates time
synchronization loss. However, protection functions are not blocked.
To get higher availability in protection functions, it is possible to avoid blocking during time
synchronization loss if there is a single source of analog data. This means that if there is only one
physical MU and no TRM, parameter
still set to
without blocking protection functions if PPS is lost.
Bay control REC670
Application manual
IED
Data
MU
IEC10000075=2=en=Original.vsd
PPS . This maintains analog and binary data correlation in disturbance recordings
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SyncLostMode is set to No block but parameter HwSyncSrc is
Station communication
SyncLostMode is set to No block , this
Section 20
533