SR Functionality - Arc protection - Back-up protection - Feeder protection - Motor protection - Technical Manual - REX610 Protection and control - Relion Protection and Control - 1.2 - ANSI - IEC - 19.04.2024

REX610 Technical Manual

The SR flip-flop output Q can be set or reset from the S or R inputs. S input has a higher priority over the R input. Output NOTQ is the negation of output Q.

Note: The statuses of outputs Q and NOTQ are not retained in the nonvolatile memory.
Table 1. Truth table for SR flip-flop
S R Q
0 0 0 1
0 1 0
1 0 1
1 1 1
1 Keep state/no change