Latching Relay - IDEC SMARTRELAY User Manual

4.4.23

Latching relay

Short description
Input S sets output
Symbol in
IDEC SmartRelay
Timing diagram
Switching response
A latching relay represents a simple binary element. The output value depends on the status
at the inputs and on the previous output status. The following table shows the logic once
again:
S
n
0
0
1
1
hen retentivity is enabled, the current status of the output signal is retained after a power
failure.
IDEC SmartRelay Manual
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, input R resets output
iring
Input S
Input R
Parameter
Output
R Comment
n
0 x The status is retentive
1 0 Reset
0 1 Set
1 0 Reset (takes priority over Set)
IDEC SmartRelay functions
4.4 Special functions list - SF
again.
Description
ou set output with a signal at input S.
ou reset output with a signal at input R. If S and R
1, the output is reset.
Retentivity:
/ no retentivity
R the status is retentive.
is set with a signal at input S, and reset with a signal
at input R.
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