Ds3 - Characteristic Value Range; Ds3 - Measurement Time; Ds3 - Low Pass Filter; Figure 5-2 Linearization Of The Scale Characteristic Curve - Siemens SIWAREX MS Device Manual

Weighing Functions
Figure 5-2 Linearization of the scale characteristic curve
5.2.2 DS3 – Characteristic Value Range
Depending on the characteristic value of the connected load cells, the value
1 mV/V, 2 mV/V or 4 mV/V must be selected. Since the SIWAREX MS supplies the
load cells with approximately 6 V, the measuring input is redefined according to the
expected measurement voltage (max. 6 mV, max. 12 mV or max. 24 mV).
For example, if the characteristic value of the connected load cells is 2.85 mV/V
then the next higher characteristic value must normally be set, i.e. 4 mV/V.
5.2.3 DS3 – Measurement Time
The measurement time can be selected depending on the region of application (50
Hz or 60 Hz mains power frequency). This selection achieves optimal interference
suppression from the power supply. Setting:
- 20 ms for 50 Hz mains supply
- 33 1/3 ms for 60 Hz mains supply
5.2.4 DS3 – Low Pass Filter
A critically energized low pass filter is provided for suppression of interference. The
figure below shows the step response of the filter (fg = 2 Hz).
5-24 SIWAREX MS