Measure
The TwinCAT modules of the Measure group in TwinCAT Power Technologies interact with EtherCAT power measurement terminals of the EL37xx series and the EtherCAT measurement terminals of the ELM3xxx series. They record and evaluate the measurement data.
The focus is on measuring the three phase voltages against neutral conductor and the three phase currents in a star connection.
The EtherCAT Terminals provide instantaneous values of voltages and currents for this purpose. These are read in by the modules as process data via PDOs (Process Data Objects) and then evaluated.
The modules calculate the following parameters, among others, from the instantaneous values:
- Frequency and phase angle
- Effective values of voltages and currents
- Effective values of active, reactive and apparent power
- Fundamental oscillation components of voltage, current and power
- Harmonics and harmonic distortion
- …
The following is an overview of supported terminals and the corresponding modules:
Terminal | Module |
|---|---|
EL3773 | |
EL3783 | |
… |
|
Further modules of the group for EtherCAT Terminals of the EL34xx series can be found in the documentation for TF8330 | TwinCAT 3 Power Collector.