ABB Relion 670 Series Product Manual page 40

Bay control REC670
Version 2.2
Basic configurable logic blocks
The basic configurable logic blocks do not propagate
the time stamp and quality of signals (have no suffix QT
at the end of their function name). A number of logic
blocks and timers are always available as basic for the
user to adapt the configuration to the specific
application needs. The list below shows a summary of
the function blocks and their features.
These logic blocks are also available as part of an
extension logic package.
• AND function block. The AND function is used to form
general combinatory expressions with boolean
variables. The AND function block has up to four
inputs and two outputs. One of the outputs is
inverted.
• GATE function block is used for whether or not a
signal should be able to pass from the input to the
output.
• INVERTER function block that inverts the input signal
to the output.
• LLD function block. Loop delay used to delay the
output signal one execution cycle.
• OR function block. The OR function is used to form
general combinatory expressions with boolean
variables. The OR function block has up to six inputs
and two outputs. One of the outputs is inverted.
• 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
40
M11396-4 v19
© Copyright 2017 Hitachi Power Grids. All rights reserved
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
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
1MRK 511 404-BEN N
GUID-0CA6511A-E8BD-416E-9B59-5C6BD98C60B7 v5
Hitachi Power Grids