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Trigger recognition
The level of the control inputs are periodically monitored by the processor. The sampling time (T
s
= sample
rate) is typically T
s typ
= 30 msec. The maximum monitor interval can be set to T
s max
= 100 msec. Thus,
shorter impulses, spikes or quick AC voltages are recognized inaccurate or with a delay (undersampling).
The bi-polar control inputs evaluate both half-waves of AC voltages.
Examples for trigger settings
T
s
= sample delay, T
s typ
= 30 msec, T
s min
= 0 msec, T
s max
= 100 msec
If the control input is ON for at least 0.6 seconds (T
del
+ T
s max
) and no other sequence with a higher
priority is currently running, the sequence 23 is started once. The end of the starting impulse is arbitrary.
Sequence 21 is initiated when the control input is without power for at least 0.2 seconds and no other
sequence with a higher priority is currently running. Since the control input is still low at the end of the
sequence, S21 starts once again.
If this control line’s (watchdog) level is not altered for a period longer than 1.0 seconds, the sequence 02
is launched. If a sequence with a higher priority is currently running, the newly selected sequence will only
be initiated after completion of the sequence with the higher priority. Please be aware of the fact, that the
truthful recognition of level alterations is only possible when they are applied for a longer period than 100
msec (see trigger recognition).
22