IDEC FL1E SmartRelay - Manual (Page 205)

IDEC SmartRelay functions
IDEC SmartRelay Manual 191
4.4.22 Current impulse relay
Short description
A short pulse at the input sets and resets the output.
Trg
Q
R
S
The bold printed section of
the timing diagram is also
shown in the symbol for the
current impulse relay.
Timing diagram
Functional description
Output Q changes its status; that is, the output is set or reset
with each 0 to 1 transition at input Trg and if the inputs S and
R = 0.
The signal at input Trg does not influence the special
function when S or R = 1.
You set the current impulse relay with a signal at input S.
The output is set hi.
You reset the current impulse relay with a signal at input R.
The output is set lo.
Symbol in IDEC
SmartRelay
Wiring Description
Input Trg You set and reset output Q with a
signal at input Trg (Trigger).
Input S You set output Q with a signal at input
S.
Input R You reset output Q with a signal at
input R.
Parameter Selection: 
RS (R input priority) or 
SR (S input priority)
Retentivity: 
/ = No retentivity 
R = The status is retentive.
Output Q Q is set with a signal at Trg, and reset
with the next signal at Trg, if S and R =
0.