EL3012 Beckhoff
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MPN: EL3012-0000
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The Beckhoff EL3012 is a part of the EL EtherCAT Terminals series and features two differential input channels with a 12-bit resolution and 16-bit process value width. This terminal supports an isolation voltage of 500 V, mounts on a 35 mm rail, and operates with a maximum common-mode voltage of 10 V. Protection rating is IP20, and the unit is designed for a maximum humidity of 95% without condensation.
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Product Description:
The EL3012 is an analog input module manufactured by Beckhoff for the EL EtherCAT Terminals series. Integrated into a DIN-rail I/O strand, the device converts low-level process voltages into digital words that the EtherCAT master can read in a single distributed clock cycle. By gathering field-level data directly beside sensors, it reduces wiring length and preserves signal fidelity in industrial automation cells.
Each channel accepts bipolar voltages, and the module provides a two-input configuration so two separate signals can be sampled through one slot. Conversion is carried out with a 12-bit converter, providing 4,096 discrete steps across the full span and adequate granularity for temperature, pressure, or position transducers. Galvanic isolation between the field side and the fieldbus is rated at 500 V, permitting safe mounting next to higher-power terminals. Front-end conditioning includes an input filter with a 1 kHz cutoff that attenuates higher-frequency noise before multiplexed acquisition. The IP20 housing is suitable for installation inside a protected control cabinet. Internally, data is delivered as 16-bit signed words, and the electronics draw no more than 40 mA from the supply while operating in multiplex mode.
Input integrity is supported by a 10 V common-mode window and a 30 V fault-source limit, which protect upstream circuits if external wiring is misrouted. The terminal tolerates ambient humidity up to 95% without condensation, while a 100 mA shield current shunts interference away from sensitive traces. Signals share a differential ground reference, and the housing snaps onto a 35 mm rail to align the EtherCAT backplane connector. During each network cycle, two status bytes and two value bytes per channel are inserted into the process image, allowing deterministic access to newly sampled data.
