EL3453 Beckhoff
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MPN: EL3453-0000
The Beckhoff EL3453 is part of the EL EtherCAT Terminals series and features three current and three voltage inputs with a nominal current of 1 or 5 Amps AC. This device supports a nominal voltage of 690 V AC, uses transformer-coupled connections, and measures using the True RMS method. It is suitable for three-phase systems, includes a harmonic limit up to the 40th harmonic, and has a housing width of 24 mm with IP20 protection.
Internal Product Review
The EL3453 is a Beckhoff EL EtherCAT Terminal designed for three-phase measurement on EtherCAT networks. True RMS measuring and 40th-harmonic analysis give the terminal dependable visibility into demanding AC loads. Transformer-coupled inputs and 690 V AC nominal voltage make the EL3453 a strong choice for accurate energy monitoring.
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Product Description:
Beckhoff manufactures the EL3453, a power monitoring module in the EL EtherCAT Terminals series. The terminal plugs into an EtherCAT I/O rack and captures electrical values from a three-phase supply, allowing the control system to log energy consumption, verify load balance, and support condition-based maintenance in industrial automation. The module forwards time-stamped measurements to the controller and supports distributed clocks, making synchronized time references available for control and monitoring tasks. Concurrent acquisition also allows measurement data from each phase to be compared at the same point in time.
The device samples each phase through its three voltage inputs, while three current inputs accept secondary currents from measuring transformers. With a nominal voltage rating of 690 V AC, the terminal can monitor feeders in industrial switchboards without external voltage dividers. Its selectable nominal current range of 1 A AC or 5 A AC matches the standard outputs of class 1 measuring transformers, covering metering and protection circuits with one module. A True RMS measuring method computes effective values even when nonlinear loads heavily distort the waveform. Because the three voltages and currents are captured concurrently, the unit calculates active, reactive, and apparent power while minimizing errors caused by timing differences between phases. The transformer-coupled connection provides galvanic isolation, preventing ground potential differences on the power side from reaching the backplane.
The unit has a housing width of 24 mm, helping conserve space when it is installed beside other EtherCAT terminals in a control cabinet. Its shrouded terminals provide IP20 protection against accidental contact with hazardous internal parts. Tool-free spring clamps simplify conductor attachment and help keep field wiring organized within the terminal assembly. The module measures harmonics through the 40th order, providing visibility into power-quality disturbances that can affect drives and inverters during acceleration or regeneration. This harmonic data can be transmitted with the other measured values for analysis by the connected control system.
