Function Block; Signals - ABB REC650 Technical Manual

Section 6
Current protection
6.6.3
6.6.4
122
An alarm level gives early warning to allow operators to take action well before the
line is tripped.
Estimated time to trip before operation, and estimated time to reclose after operation
are presented.

Function block

LCPTTR
I3P*
BLOCK START
AMBTEMP ALARM
SENSFLT LOCKOUT
RESET TEMP
TEMPAMB
TERMLOAD
IEC08000038-2-en.vsd
IEC08000038 V2 EN
LFPTTR
I3P*
BLOCK START
AMBTEMP ALARM
SENSFLT LOCKOUT
RESET TEMP
TEMPAMB
TERMLOAD
IEC11000246-1-en.vsd
IEC11000246 V1 EN
Figure 50: LCPTTR/LFPTTR function block

Signals

Table 55: LCPTTR Input signals
Name Type
I3P GROUP
SIGNAL
BLOCK BOOLEAN
AMBTEMP REAL
SENSFLT BOOLEAN
RESET BOOLEAN
TRIP
TRIP
Default Description
- Three phase group signal for current inputs
0 Block of function
0 Ambient temperature from external temperature
sensor
0 Validity status of ambient temperature sensor
0 Reset of internal thermal load counter
1MRK 511 287-UEN A
Technical manual