ABB Relion 670 Series Technical Reference Manual page 632

Section 12
Control
12.1.3
626
labelled FF must be connected if the available contact indicates that the voltage circuit
is faulty.
The VB1OK/VB2OK and VB1FF/VB2FF inputs are related to the busbar voltage and
the VLNOK and VLNFF inputs are related to the line voltage. Configure them to the
binary input or function outputs that indicate the status of the external fuse failure of
the busbar and line voltages. In the event of a fuse failure, the energizing check
function is blocked. The synchronism check function requires full voltage on both
sides and will be blocked automatically in the event of fuse failures.
Function block
SESRSYN (25)
V3PB1* SYNOK
V3PB2* AUTOSYOK
V3PL1* AUTOENOK
V3PL2* MANSYOK
BLOCK MANENOK
BLKSYNCH TSTSYNOK
BLKSC TSTAUTSY
BLKENERG TSTMANSY
BUS1_OP TSTENOK
BUS1_CL VSELFAIL
BUS2_OP B1SEL
BUS2_CL B2SEL
LINE1_OP L1SEL
LINE1_CL L2SEL
LINE2_OP SYNPROGR
LINE2_CL SYNFAIL
VB1OK VOKSYN
VB1FF VDIFFSYN
VB2OK FRDIFSYN
VB2FF FRDIFFOK
VL1OK FRDERIVA
VL1FF VOKSC
VL2OK VDIFFSC
VL2FF FRDIFFA
STARTSYN PHDIFFA
TSTSYNCH FRDIFFM
TSTSC PHDIFFM
TSTENERG INADVCLS
AENMODE VDIFFME
MENMODE FRDIFFME
PHDIFFME
Vbus
VLine
MODEAEN
MODEMEN
ANSI10000046-1-en.vsd
ANSI10000046 V1 EN
Figure 314: SESRSYN (25) function block
1MRK505222-UUS C
Technical reference manual