Product Overview; Introduction; Fig. 9 El3783 - Beckhoff EL3783 Documentation

2

Product overview

2.1

Introduction

Fig. 9: EL3783
Power monitoring oversampling terminal for 690 V
The EL3783 EtherCAT Terminal is designed as a power monitoring terminal for the state monitoring of a 3-
phase AC voltage system (rated mains voltage 400/690 V
currents up to 6.5 A are sampled as instantaneous values with a resolution of 16 bit.
rms
The six channels are measured simultaneously based on the EtherCAT oversampling principle with a
temporal resolution of 50 µs and passed on to the controller. The controller has sufficient computing power
for true RMS or performance calculation and complex custom algorithms based on the measured voltages
and currents.
Through the oversampling principle the terminal is able to measure at significantly shorter intervals than the
cycle time of the controller. AC parameters must be connected and measured with a common reference
potential.
The EL3783 supports distributed clocks for measuring synchronously with other EtherCAT devices, but can
also be operated without distributed clocks.
RMS value (rms) specifications
All AC value specifications in this documentation such as RMS specifications (rms) refer to a
50/60 Hz 3-phase mains network with a sinusoidal waveform (crest factor 1.414).
Also see about this
2 Technology [} 15]
2 Basic function principles [} 107]
EL3783
). For each phase voltages up to 520 V
rms
Version: 1.1
Product overview
and
rms
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