Configurable Logic Blocks - ABB Relion Technical Manual

Section 13
Logic
13.3
13.3.1
13.3.1.1
474

Configurable logic blocks

Standard configurable logic blocks
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 Enabled 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
1MRK 502 048-UUS A
Technical manual