Siemens SIMATIC ET 200SP HA Equipment Manual - Page 28

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Siemens SIMATIC ET 200SP HA Equipment Manual
Parameters
6.5 Flutter monitoring
Principle
The following figure is a graphic illustration of the flutter monitoring principle.
Figure 6-2
Flutter monitoring and settling time when flutter errors occur
Does the monitoring time in the event of a fault restart as three monitoring windows if the signal
continues to change?
The signal changes...
one time more than what is set in the number of signal
changes.
less often than what is set in the number of signal changes.
Application case
Enabling flutter monitoring (Page 28)
6.5.2

Enabling flutter monitoring

Requirement
The input signal is recorded without errors.
28
The flutter monitoring principle
Result
Monitoring time is restarted.
The monitoring time is not restarted. In other words, the mon‐
itoring time only runs once after a flutter error is detected.
Even a change shortly before the time expires is tolerated.
Equipment Manual, 08/2019, A5E39293880-AD
DI 16xNAMUR HA