Function Block; Input And Output Signals - ABB Relion 670 Series Technical Reference Manual

Section 8
Frequency protection
8.1.2
8.1.3
260
of RestoreFreq, the RESTORE output is issued after the time delay
TimeDlyRestore. The design of underfrequency protection SAPTUF is
schematically described in figure 132.
Block
Comparator
U < IntBlockLevel
Voltage
Frequency Comparator
f < StartFrequency
Comparator
f > RestoreFreq
IEC05000726 V1 EN
Figure 132: Simplified logic diagram for SAPTUF

Function block

SAPTUF
U3P* TRIP
BLOCK START
BLKTRIP RESTORE
BLKREST BLKDMAGN
FREQ
IEC06000279_2_en.vsd
IEC06000279 V2 EN
Figure 133: SAPTUF function block

Input and output signals

Table 159: SAPTUF Input signals
Name Type
U3P GROUP
SIGNAL
BLOCK BOOLEAN
BLKTRIP BOOLEAN
BLKREST BOOLEAN
BLOCK
OR
Time integrator
TimerOperation Mode
START
Selector
TimeDlyOperate
TRIP
TimeDlyReset
TimeDlyRestore
Default Description
- Voltage connection
0 Block of function
0 Blocking operate output.
0 Blocking restore output.
1MRK 505 208-UEN B
BLKDMAGN
Start
START
&
Trip
Output
Logic
TRIP
100 ms
RESTORE
en05000726.vsd
Technical reference manual