Commissioning; Preparation; Filter Mode - WAGO 750 Series Manual

54

Commissioning

7 Commissioning
The following actions can be performed:
• Read out module information
• Configure inputs
• Calibrate inputs
• Scale inputs (see also Section "Scaling Measured Values")
• Read out diagnostic information
• Output process data
• Perform firmware update (see also Section "Service" > "Firmware
Update/Downgrade")
• Perform firmware downgrade (see also Section "Service" > "Firmware
Update/Downgrade"
7.1

Preparation

7.1.1

Filter Mode

You can choose between 2 filter modes:
• precise
In this filter mode, the interference frequency is suppressed by a broadband
notch filter, including frequencies in the sidebands. Therefore, there is good
interference suppression even at higher frequencies (> 40 dB, low pass).
However, a 3× conversion time compared to the "fast" filter mode has to be
accepted
• fast (default setting)
The interference suppression in this filter mode is precisely optimized for
the set filter frequency; the attenuation decreases in the sidebands. Higher
frequencies are not attenuated as much as in the "precise" filter mode. In
return, the conversion time is significantly shorter.
Reduce aliasing effects!
The suppression of high interference frequencies and noise decreases the higher
you select the value for the filter frequency. This can lead to so-called aliasing
effects in the "200 Hz" and "400 Hz" ranges. Ensure that the sensitive sensor
signals are adequately protected (e.g., by shielding)!
Manual
Version 1.0.0
750-1491 2AI Resistor Bridge (Strain Gauge)
WAGO I/O System 750