IDEC FL1E SmartRelay - Manual (Page 161)

T
a
is busy
T
Q
Trg
T
!L
T
!
IDEC SmartRelay functions
IDEC SmartRelay Manual 147
Timing diagram
Functional description
A 0 to 1 signal transition at input Trg sets output Q. The next
1 to 0 transition at Trg retriggers the current time T
a
, and
output Q remains set.
Output Q is reset when T
a
= T. You can output a warning
signal before the off-delay time (T - T
!
) has expired to reset
Q for the time of the pre-warning period T
!L
.
A further one-shot at input Trg during T
a
retriggers the time
T
a
.
If retentivity is not set, output Q and the expired time are
reset after a power failure.
Setting the Par parameter
Note the defaults specified in Chapter 4.3.2.
Note
All times must have the same timebase.
View in programming mode (example):
B9 1+R
T
=60:00s
Protection mode and retentivity
Off-delay time
Press
B9 2
T!
=05:00s
T!L =00:10s
Start of the off-warning period
(T - T!)
Off-warning time