ABB RELION 670 Series Technical Manual page 974

Section 15
Logic
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.
15.7.1 ANDQT function block
The ANDQT function is used to form general combinatory expressions with boolean variables. The
ANDQT function block has four inputs and two outputs. It can propagate the quality, value and
timestamps of the signals via IEC61850.
15.7.1.1 Function block
INPUT1
INPUT2
INPUT3
INPUT4
IEC09000297 V1 EN-US
Figure 502: ANDQT function block
15.7.1.2 Signals
968
ANDQT
OUT
NOUT
IEC09000297-1-en.vsd
1MRK 502 066-UUS B
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