HART mode is only possible with a measuring range of 4 mA to 20 mA. HART communication is
not deactivated even at currents below 4 mA.
5.4.5 Interference frequency suppression
Denition
Suppresses the interference that is caused by the frequency of the AC voltage network used.
When HART operation is activated, interference frequency suppression of 10 Hz is
recommended to prevent the HART signal from inuencing the analog value.
5.4.6 Smoothing
Denition
Compensates for measured value uctuations.
The individual measured values are smoothed by ltering.
Description
Smoothing can be set in 4 levels.
Smoothing time = number of module cycles (k) x cycle time of the module.
The following gure shows how many module cycles it takes for the smoothed analog value to
approach 100%, depending on the congured smoothing. This applies to every signal change at
the analog input.
Parameters
5.4 Explanation of the module/channel parameters
AI 4xI 2-/4-wire HART ISOL HA
26 Equipment Manual, 07/2022, A5E50101523-AB
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