ABB Relion 670 series - Configurable logic blocks; Introduction

14.3 Configurable logic blocks
14.3.1 Introduction
A number of logic blocks and timers are available for the user to adapt the
configuration to the specific application needs.
• OR function block.
• 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.
• 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 function block.
• 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.
• 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. RESET input has priority.
Section 14 1MRK505222-UUS C
Logic
872
Technical reference manual