• PULSETIMER function block can be used, for example,
for pulse extensions or limiting of operation of
outputs, settable pulse time.
• RSMEMORY function block is a flip-flop that can reset
or set an output from two inputs respectively. Each
block has two outputs where one is inverted. The
memory setting controls if, after a power interruption,
the flip-flop resets or returns to the state it had
before the power interruption. RESET input has
priority.
• SRMEMORY function block is a flip-flop that can set or
reset an output from two inputs respectively. Each
block has two outputs where one is inverted. The
memory setting controls if, after a power interruption,
the flip-flop resets or returns to the state it had
before the power interruption. The SET input has
priority.
• TIMERSET function has pick-up and drop-out delayed
outputs related to the input signal. The timer has a
settable time delay.
• XOR is used to generate combinatory expressions
with boolean variables. XOR has two inputs and two
outputs. One of the outputs is inverted. The output
signal OUT is 1 if the input signals are different and 0
if they are the same.
Configurable logic blocks Q/T
GUID-0CA6511A-E8BD-416E-9B59-5C6BD98C60B7 v5
The configurable logic blocks QT propagate the time
stamp and the quality of the input signals (have suffix
QT at the end of their function name).
The function blocks assist the user to adapt the IEDs'
configuration to the specific application needs. The list
below shows a summary of the function blocks and their
features.
• ANDQT AND function block. The function also
propagates the time stamp and the quality of input
signals. Each block has four inputs and two outputs
where one is inverted.
• INDCOMBSPQT combines single input signals to group
signal. Single position input is copied to value part of
SP_OUT output. TIME input is copied to time part of
SP_OUT output. Quality input bits are copied to the
corresponding quality part of SP_OUT output.
• INDEXTSPQT extracts individual signals from a group
signal input. The value part of single position input is
copied to SI_OUT output. The time part of single
position input is copied to TIME output. The quality
bits in the common part and the indication part of
inputs signal are copied to the corresponding quality
output.
• INVALIDQT function which sets quality invalid of
outputs according to a "valid" input. Inputs are copied
to outputs. If input VALID is 0, or if its quality invalid
bit is set, all outputs invalid quality bit will be set to
invalid. The time stamp of an output will be set to the
latest time stamp of INPUT and VALID inputs.
• INVERTERQT function block that inverts the input
signal and propagates the time stamp and the quality
of the input signal.
• ORQT OR function block that also propagates the time
stamp and the quality of the input signals. Each block
has six inputs and two outputs where one is inverted.
• PULSETIMERQT Pulse timer function block can be
used, for example, for pulse extensions or limiting of
operation of outputs. The function also propagates
the time stamp and the quality of the input signal.
• RSMEMORYQT function block is a flip-flop that can
reset or set an output from two inputs respectively.
Each block has two outputs where one is inverted. The
memory setting controls if the block after a power
interruption should return to the state before the
interruption, or be reset. The function also propagates
the time stamp and the quality of the input signal.
• SRMEMORYQT function block is a flip-flop that can set
or reset an output from two inputs respectively. Each
block has two outputs where one is inverted. The
memory setting controls if the block after a power
interruption should return to the state before the
interruption, or be reset. The function also propagates
the time stamp and the quality of the input signal.
• TIMERSETQT function has pick-up and drop-out
delayed outputs related to the input signal. The timer
has a settable time delay. The function also
propagates the time stamp and the quality of the
input signal.
• XORQT XOR function block. The function also
propagates the time stamp and the quality of the
input signals. Each block has two outputs where one is
inverted.
Extension logic package
GUID-144BAAA3-A5EF-49AF-8876-93CC5F3D0234 v1
The logic extension block package includes additional
trip matrix logic and configurable logic blocks.
Fixed signal function block FXDSIGN
M15322-3 v15
The Fixed signals function (FXDSIGN) has nine pre-set
(fixed) signals that can be used in the configuration of
an IED, either for forcing the unused inputs in other
function blocks to a certain level/value, or for creating
Line differential protection RED670
1MRK 505 379-BEN N
Hitachi Power Grids 49
© Copyright 2017 Hitachi Power Grids. All rights reserved
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