IDEC SmartRelay functions
4.4 Special functions list - SF
IDEC SmartRelay Manual
154
Functional description
A 0 to 1 transition at input Trg sets output Q.
If output Q = 0, and input Trg is set hi at least for the duration of T
L
, IDEC SmartRelay enables
the permanent lighting function and sets output Q accordingly.
IDEC SmartRelay triggers the off-delay T when input Trg returns to 0 before T
L
has expired.
Output Q is reset when T
a
= T.
You can output an off-warning signal prior to the expiration of the off-delay time (T-T
!
) that
resets Q for the duration of the prewarning time period T
!L
. A subsequent signal at Trg always
resets T and the output Q.
If the block is retentive, IDEC SmartRelay resets output Q and the expired time to the values
before a power failure; if the block is not retentive, IDEC SmartRelay resets output Q and the
expired time to defaults after a power failure.
Setting the Par parameter
Note the defaults specified in the topic "Time response (Page 124)".
View in programming mode (example):
View in parameter assignment mode (example):
Note
T, T
!
and T
!L
must all have the same timebase.
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