EL3783 | EtherCAT Terminal, 3-channel analog input, multi-function, 690 V AC, 1/5 A, 16 bit, 20 ksps, electrically isolated, oversampling

The EL3783 EtherCAT Terminal is a power monitoring I/O terminal used for state monitoring of a 3-phase AC voltage system. For each phase, voltage up to 400/690 V_rms and current up to 1 A_rms/5 A_rms are sampled as instantaneous values with a resolution of 16 bits. The six channels are measured simultaneously based on the EtherCAT oversampling principle with a temporal resolution of up to 50 µs and then passed on to the control system. With the processing power available there and in combination with the TwinCAT Function TF3650, true RMS or power calculations as well as complex user-specific algorithms can be calculated via the voltage and current characteristics. Through the oversampling principle, the terminal is able to measure at significantly shorter intervals than the cycle time of the control system. AC and DC parameters must be connected and measured with a common reference potential.

Through the feature “ExtendedRange”, the user has the full technical measuring range available at up to 130% of the specified nominal measuring range. The EL3783 supports distributed clocks and can therefore measure synchronously with other EtherCAT devices. In combination with EL6688 it can be synchronized via IEEE 1588 to external clocks. The terminal can also be operated without distributed clocks.