Basic Function Principles; Fig. 98 Data Flow Diagram Input Filter; Fig. 99 Filter Setting Via The Coe Object "Filter Settings" (Index 0X8000:15) - Beckhoff EL3773 Documentation

6.4

Basic function principles

RMS value (rms) specifications
All AC value specifications in this documentation such as RMS specifications (
50/60 Hz 3-phase mains network with a sinusoidal waveform.
Note
The EL3773 has 6 analog input channels which are measured simultaneously in their respective measuring
ranges. The properties are discussed below in the order of the data processing.
Input filter
th
Each channel has a 5 order low-pass filter with Bessel characteristic which can be parameterized via the
CoE setting 0x8000:15 [} 95]. The corresponding anti-aliasing filters are placed up or downstream and are
adapted automatically.
The filter setting of channel 1 also applies to channels 2 to 6; the corresponding CoE object cannot be
written in these channels. All 6 input channels are thus subject to the same filter characteristic.
The input filter cannot be deactivated.
Fig. 98: Data flow diagram input filter
The following steps can be selected:
• 200 Hz
• 500 Hz
• 1 kHz
• 1.5 kHz
• 2.5 kHz
• 5 kHz
• 15 kHz
Fig. 99: Filter setting via the CoE object "Filter settings" (Index 0x8000:15)
The amplitude curve can be represented accordingly:
EL3773 Version: 2.5
Commissioning
) refer to a
rms
85