ABB RES670 Applications Manual page 311

1MRK 511 407-UEN C
Phasor measurement unit RES670 2.2 IEC
Application manual
Two status monitoring signals can be:
• SYNCH signal on the MUx function block indicates that protection functions
are blocked due to loss of internal time synchronization to the IED
• MUSYNCH signal on the MUx function block monitors the synchronization
flag smpSynch in the datastream and IED hardware time synchronization.
Using external clock for time synchronization
This example is not valid when GPS time is used for differential
protection, when PTP is enabled or when the PMU report is used.
IED
IEC/UCA 61850-9-2LE
data
MU
IEC17000093 V1 EN-US
Figure 107: Setting example with external synchronization
Settings on the local HMI under Main menu/Configuration/Time/
Synchronization/TIMESYNCHGEN:1/IEC61850-9-2:
• SyncLostMode: set to Block to block protection functions if time
synchronization is lost.
• SyncAccLevel: can be set to 4μs since this corresponds to a maximum phase
angle error of 0.072 degrees at 50Hz.
• fineSyncSource: should be set to IRIG-B if available from the clock.
Two status monitoring signals can be:
• SYNCH signal on the MUx function block indicates that protection functions
are blocked due to loss of internal time synchronization to the IED (that is loss
of the hardware synchSrc).
• MUSYNCH signal on the MUx function block monitors the synchronization
flag smpSynch in the datastream and IED hardware time synchronization.
Station communication
IRIG-B
STATION
PPS
IEC17000093-1-en-us.vsd
Section 19
CLOCK
305