Logic; Configurable Logic Blocks; Standard Configurable Logic Blocks; Functionality - Hitachi Relion 650 Series Technical Manual

1MRK 511 557-UEN Rev. A
Section 11
11.1

Configurable logic blocks

11.1.1

Standard configurable logic blocks

11.1.1.1

Functionality

A number of logic blocks and timers are available for the user to adapt the configuration to the
specific application needs.
• OR function block. Each block has 6 inputs and two outputs where one is inverted.
• INVERTER function blocks that inverts the input signal.
• PULSETIMER function block can be used, for example, for pulse extensions or limiting of
operation of outputs, settable pulse time.
• GATE function block is used for whether or not a signal should be able to pass from the input to
the output.
• XOR function block. Each block has two outputs where one is inverted.
• LOOPDELAY function block used to delay the output signal one execution cycle.
• TIMERSET function has pick-up and drop-out delayed outputs related to the input signal. The
timer has a settable time delay and must be On for the input signal to activate the output with
the appropriate time delay.
• AND function block. Each block has four inputs and two outputs where one is inverted
• 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
the block's output should reset or return to the state it was, after a power interruption. The SET
input has priority if both SET and RESET inputs are operated simultaneously.
• 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
the block's output should reset or return to the state it was, after a power interruption. The
RESET input has priority if both SET and RESET are operated simultaneously.
Configurable logic Q/T
A number of logic blocks and timers, with the capability to propagate timestamp and quality of the
input signals, are available. The function blocks assist the user to adapt the IEDs configuration to the
specific application needs.
• ORQT OR function block that also propagates timestamp and quality of input signals. Each
block has six inputs and two outputs where one is inverted.
• INVERTERQT function block that inverts the input signal and propagates timestamp and quality
of input signal.
• PULSETIMERQT Pulse timer function block can be used, for example, for pulse extensions or
limiting of operation of outputs. The function also propagates timestamp and quality of input
signal.
• XORQT XOR function block. The function also propagates timestamp and quality of input
signals. Each block has two outputs where one is inverted.
Technical Manual

Logic

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Section 11
Logic
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