Product Description:

The EL3041 is an analog input terminal produced by Beckhoff within the EL EtherCAT Terminals series. Installed on a standard I/O segment, it digitizes a process current signal so that a controller can monitor flow, pressure, or other current-loop transducers without separate interface cards. By integrating conversion electronics directly on the rail, the terminal conserves space in distributed control panels and maintains the deterministic timing expected from EtherCAT networks used in industrial automation.

The module provides one current channel that is acquired by a simultaneous sampling circuit, and its conversion granularity is 12 bits. After scaling, values are forwarded over the fieldbus as a 16-bit data word, preserving headroom for status flags and sign extension. The analog path includes a cutoff filter at 1 kHz to suppress high-frequency noise that could alias into the measurement. Internal logic and A/D converters draw power exclusively from the EtherCAT E-Bus, eliminating separate 24 V wiring. The input is referenced as single-ended to the I/O ground, and distributed clock synchronization is not supported, so timestamping must be handled by the upstream PLC. The signal span begins at 0 mA and extends to the supported upper limit.

The terminal accepts up to 20 mA without linearity loss and withstands a dielectric potential of 30 V between the input and supply lines during transient conditions. It snaps onto a 35 mm DIN rail beside other EtherCAT slices, and the housing meets the IP20 ingress protection rating for use in enclosed cabinets. The process image maps two bytes of status followed by two bytes of value during each scan. This arrangement allows the controller to evaluate measurement data and associated state information through the EtherCAT process image. Direct connection to compatible two-wire sensors is supported without requiring an additional analog interface card.