DESIGNER’S HANDBOOK 4189350049C EN Page 155 of 206
Relay in ND mode.
The timer mode can be used to make a short event activate a longer relay output. This can be useful in several
situations where the relay is driving a warning lamp or an acoustic alarm. If the short event happens again after
“Timer min.”, then the sequence will reappear.
Relay in ND mode.
In this example, the event lasts longer than “Timer Min.”, but it is not longer than the (Timer Min + Timer Max) limit,
so the relay output will be equal to the length of the event.
Relay in ND mode.
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