ABB REG670 - Function Block; Signals

first action should be to split the network into two parts, after line protection action. If
this fails there should be operation of the generator PSPPPAM in zone 2, to prevent
further damages to the generator, shaft and turbine.
7.5.3 Function block
IEC10000045-1-en.vsd
PSPPPAM
I3P*
U3P*
BLOCK
BLKGEN
BLKMOTOR
EXTZONE1
TRIP
TRIP1
TRIP2
START
ZONE1
ZONE2
GEN
MOTOR
SFREQ
SLIPZOHM
SLIPZPER
UCOS
UCOSPER
IEC10000045 V1 EN
Figure 106: PSPPPAM function block
7.5.4 Signals
Table 99: PSPPPAM Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Current group connection
U3P GROUP
SIGNAL
- Voltage group connection
BLOCK BOOLEAN 0 Block of function
BLKGEN BOOLEAN 0 Block operation in generating direction
BLKMOTOR BOOLEAN 0 Block operation in motor direction
EXTZONE1 BOOLEAN 0 Extension of zone1 with zone2 region
Table 100: PSPPPAM Output signals
Name
Type Description
TRIP BOOLEAN Common trip signal
TRIP1 BOOLEAN Trip1 after the N1Limit slip in zone1
TRIP2 BOOLEAN Trip2 after the N2Limit slip in zone2
START BOOLEAN Common start signal
ZONE1 BOOLEAN First slip in zone1 region
ZONE2 BOOLEAN First slip in zone2 region
GEN BOOLEAN Generator is faster than the system
MOTOR BOOLEAN Generator is slower than the system
Table continues on next page
1MRK502052-UEN B Section 7
Impedance protection
253
Technical manual