ABB Relion 670 Series Technical Reference Manual page 561

1MRK505222-UUS C
9.1.3
9.1.4
Technical reference manual
Block
Comparator
V < IntBlockLevel
Voltage
Frequency Comparator
f < PuFrequency
Comparator
f > RestoreFreq
ANSI05000726 V1 EN
Figure 282: Simplified logic diagram for SAPTUF (81)
Function block
SAPTUF (81)
V3P* TRIP
BLOCK PICKUP
BLKTRIP RESTORE
BLKREST BLKDMAGN
FREQ
ANSI06000279-2-en.vsd
ANSI06000279 V2 EN
Figure 283: SAPTUF (81) function block
Input and output signals
Table 285: SAPTUF (81) Input signals
Name Type
V3P GROUP
SIGNAL
BLOCK BOOLEAN
BLKTRIP BOOLEAN
BLKREST BOOLEAN
OR
Time integrator
TimerOperation Mode
PICKUP
Selector
TimeDlyOperate
TimeDlyReset
TimeDlyRestore
Default Description
- Voltage connection
0 Block of function
0 Blocking operate output.
0 Blocking restore output.
Section 9
Frequency protection
BLKDMAGN
BLOCK
Pickup
PICKUP
&
Trip
Output
Logic
TRIP
100 ms
RESTORE
en05000726_ansi.vsd
TRIP
555