Easy xLogic, User Manual

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The off-delay time T, the prewarning time T! and the prewarning period T!L can be provided by
the actual value of another already-programmed function:
Analog comparator: Ax – Ay
Analog trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Analog math: AQ
PI controller:AQ
Data latching relay: AQ
Up/Down counter: Cnt
The value of
＂Ｔ＂
can be set/modified in parameter mode. For information about how to
modify, refer to chapter 5.2.2 please.
Timing Timing Timing Timing diagram diagram diagram diagram
Changing Changing Changing Changing the the the the time time time time base base base base
You can change the pre-warning time base and the period.
Description Description Description Description of of of of the the the the function function function function
Output Q is set to 1 with a 0 to 1 signal transition at input Trg. The 1 to 0 transition at input Trg
triggers the current time and output Q remains set.
Output Q is reset to 0 when Ta reaches the time T. Before the off delay time (T - T
!
) has expired,
you can output a pre-warning that resets Q for the duration of the off pre-warning time T
!L
.
Ta is retriggered (optional) at the next high/low transition at input Trg and if Ta is expiring.
If retentivity is not set, output Q and the expired time are reset after a power failure.
Setting Setting Setting Setting the the the the Par Par Par Par parameter parameter parameter parameter
Note
All times must have the same timebase.
Time Time Time Time
base
base base base
T
T T
T
Pre Pre Pre Pre----warning warning warning warning
time time time time
Pre Pre Pre Pre----warning warning warning warning
period period period period
Seconds 750 ms 50 ms
Minutes 15 s 1 s
Hours 15 min 1 min
* makes sense only for programs with a cycle time of < 25 ms