Beckhoff EL3783-0100 | EtherCAT Terminal, 3-channel analog input, multi-function

The EL3783-0100 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 Vrms and current up to 1 Arms/5

Arms 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 theTwinCAT 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 shorterintervals 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 EL3783-0100 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.

The adapted voltage measuring range to 130 V is optimally suited for

connecting medium voltage transformers, for example.