ABB Relion 670 series, Technical Manual

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• 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 one input signal to the output.
• LLD function block. Loop delay used to delay the output signal one execution cycle.
• OR function block. Each block has up to six inputs and two outputs where one 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 function block. Each block has two outputs where one is inverted.
15.6.1 AND function block AND
IP11013-1 v2
M11453-3 v4
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.
15.6.1.1 Function block
M11452-3 v2
AND
INPUT1
INPUT2
INPUT3
INPUT4 OUT
NOUT
IEC14000071-1-en.vsd
IEC14000071 V1 EN-US
Figure 491: AND function block
Section 15 1MRK 502 066-UUS B
Logic
956
Technical manual