EL3144 Beckhoff
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MPN: EL3144-0000
The Beckhoff EL3144 is an analog input terminal from the EL EtherCAT Terminals series. It features 4 single-ended analog inputs with 16-bit resolution and supports a maximum input current of 40 mA. The terminal operates with a dielectric strength of up to 30 V and is designed for 35 mm rail mounting with IP20 protection.
Internal Product Review
The EL3144 is an EtherCAT analog input terminal that stands out for 4 analog inputs and 16-bit resolution. Distributed clocks and a 5 kHz input filter limit give signal acquisition a precise, stable character, making the module a strong choice for accurate analog measurement.
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Product Description:
The EL3144 is an analog input terminal from Beckhoff in the EL EtherCAT Terminals series. Designed for process automation, the module converts field-level current signals into digital words that an EtherCAT controller can process. By occupying a single slot on a DIN-rail I/O station, it streamlines sensor feedback collection and supports deterministic data exchange within high-speed control networks. Its compact housing allows dense channel placement alongside other terminals without extra wiring adapters, providing flexible signal acquisition in distributed machine architectures.
It offers 4 single-ended current channels, each wired through a 2-wire interface commonly used with loop-powered instrumentation. The input stage withstands up to 30 V of dielectric separation from neighboring potentials, protecting the bus coupler against field transients. An internal analog filter limits signal bandwidth to 5 kHz, so high-frequency noise is attenuated before conversion. The conversion depth is 16-bit, including a sign bit, and provides detailed measurement values across the programmed range. Channel sampling is performed in a multiplexed sequence, allowing the terminal to share one precision converter among all inputs without timing skew between EtherCAT cycles.
The field side can handle up to 40 mA per channel, which accommodates common 4–20 mA loops while remaining within the module’s energy budget. Installation follows the 35 mm DIN rail profile specified in EN 60715, and the housing meets the IP20 protection class commonly used for cabinet-mounted terminals. Each input is referenced to a single-ended ground line, which simplifies shield termination in control panels. The EtherCAT interface publishes a process image containing four 16-bit value words and four 8-bit status bytes, allowing the PLC to read measurements and diagnostic flags in one cyclic access. Distributed Clock support aligns sampling with sub-microsecond network timing. The terminal also retains its cycle settings when the CoE object dictionary is not stored.
