IDEC SmartRelay functions
IDEC SmartRelay Manual
135
4.4.9
Stairwell Light Switch
Short description
An input edge triggers a configurable and retriggerable time.
The output is reset after this time has expired. A warning sig-
nal can be output before this time has expired to warn of the
impending shutdown.
Timing diagram
Symbol in
IDEC
SmartRelay
Wiring
Description
Input Trg
A signal at input Trg (Trigger)
triggers the off-delay time for
the Stairwell Light Switch.
Parameter
T represents the off-delay
time of the output (output sig-
nal transition 1 to 0).
T
!
determines the triggering
time for the pre-warning.
T
!L
determines the length of
the pre-warning signal.
Retentivity:
/ = No retentivity
R = The status is retentive.
Output Q
Q is reset after the time T has
expired. A warning signal
can be output before this
time has expired.
T
Q
Trg
T
!L
T
!
T
a
is busy
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