Hitachi Relion 670 Series Product Manual page 52

Line differential protection RED670
Version 2.2
The trip matrix logic function has 3 output signals and these
outputs can be connected to physical tripping outputs
according to the specific application needs for settable
pulse or steady output.
Group alarm logic function ALMCALH
The group alarm logic function (ALMCALH) is used to route
several alarm signals to a common indication, LED and/or
contact, in the IED.
Group warning logic function WRNCALH
The group warning logic function (WRNCALH) is used to
route several warning signals to a common indication, LED
and/or contact, in the IED.
Group indication logic function INDCALH
The group indication logic function (INDCALH) is used to
route several indication signals to a common indication,
LED and/or contact, in the IED.
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.
The logic blocks are available as a part of an extension
logic package. The list below is a summary of the function
blocks and their features.
• 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
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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
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
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