IDEC FL1E SmartRelay - Manual (Page 159)

En
T is
busy
Q
T
L
T
H
The bold section of the timing
diagram also appears in the
symbol of the random generator.
IDEC SmartRelay functions
IDEC SmartRelay Manual 145
Timing diagram
Functional description
The 0 to 1 transition at input En triggers a random on-delay
time between 0 s and T
H
. The output is set when the on-
delay time has expired and if the signal at input En remains
hi at least for the duration of this time.
The time is reset if input En is reset before the on-delay time
has expired.
A 1 to 0 transition at input EN triggers a random off-delay
time between 0 s and T
L
.
The output is reset after the off-delay time has expired,
provided input En remains lo at least for the duration of this
time.
The time is reset if the signal at input En changes to 1 again
before the off-delay time has expired.
The time expired is reset after a power failure.