TSTSCBLKSCBLOCKTSTAUTSYAUTOSYOKPHDIFFMEFRDIFFMEVDIFFMEPHDIFFAVOKSCVDIFFSCORANDANDANDANDANDANDphaseAngleDifferenceValuefrequencyDifferenceValuevoltageDifferenceValue11ANDNote! Similar logic for Manual Synchrocheck.1 FRDIFFAANSI08000018-2-en.vsdOperationSC = EnabledVDiffSCFreqDiffAPhaseDiffABus voltage >80%of GblBaseSelBusLine voltage >80%of GblBaseSelLinePhaseDiff > 60°100 ms INADVCLSAND ANDPhaseDiff < 5°00-tSCA050 ms80 ms0ANSI08000018 V2 ENFigure 149: Simplified logic diagram for the Auto Synchronism function12.1.7.3 SynchronizingWhen the function is set to OperationSynch = Enabled the measuring will be performed.The function will compare the values for the bus and line voltage with internally presetvalues that are set to be 80% of the set value of GlbBaseSelBus and GlbBaseSelLine,which is a supervision that the voltages are both live. Also the voltage difference ischecked to be smaller than the internally preset value 0.10, which is a p.u value of setvoltage base values. If both sides are higher than the preset values and the voltage1MRK 502 043-UUS B Section 12Control325Technical Manual
