It is possible to create functionality with more than one frequency band limit by using
multiple instances of the function. This can be achieved by a proper configuration
based on the turbine manufacturer specification.
10.4.3
Function block
GUID-E3D2093B-8A97-4037-AAFE-5483489BF350 v2
FTAQFVR (81A)
I3P*
V3P*
BLOCK
CBCLOSE
CBOPEN
LOADINIT
HOLDACC
RESETACC
ERROR
TRIP
TRIPACC
TRIPCONT
BFI_3P
ACCALARM
STRORHLD
FREQOK
VOLTOK
ANSI14000049-1-en.vsd
ANSI14000023 V1 EN-US
Figure 111:
FTAQFVR (81A) function block
10.4.4
Signals
PID-6515-INPUTSIGNALS v4
Table 177:
FTAQFVR (81A) Input signals
Name
Type
Default
Description
I3P
GROUP
SIGNAL
-
Group signal for three phase current
V3P
GROUP
SIGNAL
-
Group signal for three phase voltage
BLOCK
BOOLEAN
0
Block of function
CBCLOSE
BOOLEAN
0
Circuit breaker closed status input
CBOPEN
BOOLEAN
0
Circuit breaker open status input
LOADINIT
BOOLEAN
0
Loads the initial accumulation time to the function
HOLDACC
BOOLEAN
0
Holds the time accumulation when input is activated
RESETACC
BOOLEAN
0
Resetting the accumulated time of the function block
PID-6515-OUTPUTSIGNALS v4
Table 178:
FTAQFVR (81A) Output signals
Name
Type
Description
ERROR
BOOLEAN
Error output for incorrect settings
TRIP
BOOLEAN
Trip signal of the function
TRIPACC
BOOLEAN
Trip signal when accumulation time is exceeded the
set limit
Table continues on next page
1MRK 511 408-UUS A
Section 10
Frequency protection
Phasor measurement unit RES670 2.2 ANSI
319
Technical manual
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