ABB RELION Series - RS Function Block

Signals
Table 118: SR Input signals
Name
Type Default Description
S BOOLEAN 0=False Set Q output when set
R BOOLEAN 0=False Resets Q output when
set
Table 119: SR Output signals
Name Type Description
Q BOOLEAN Q status
NOTQ BOOLEAN NOTQ status
3.16.1.13 RS function block
Function block
GUID-3876F400-A7D1-45DA-B20F-DFA5AE863073 V1 EN
Figure 77: Function block
Functionality
The RS flip-flop output Q can be set or reset from the S or R inputs. R input has a higher
priority over the S input. Output NOTQ is the negation of output Q.
The statuses of outputs Q and NOTQ are not retained in the nonvolatile
memory.
Table 120: Truth table for RS flip-flop
S
R Q
0 0
0
1)
0 1 0
1 0 1
1 1 0
1) Keep state/no change
Section 3 1MRS758755 A
Basic functions
132 REC615 and RER615
Technical Manual