EL3314-0000 Beckhoff
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The EL3314-0000 is a terminal module from Beckhoff and is part of the EL EtherCAT Terminals series. It features 4 inputs, internal 16-bit resolution, and supports 2-wire connection technology with a maximum cable length of 30 meters. The module offers voltage ranges of ±30 mV, ±60 mV, and ±75 mV with a voltage resolution up to 1 μV per digit, and it is rated for IP20 protection class.
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Product Description:
Beckhoff’s EL3314-0000 is an analog input terminal in the EL EtherCAT Terminals series. The module digitizes small differential voltages from field sensors and transfers the data straight onto the EtherCAT process image, enabling precise acquisition of thermocouple or millivolt signals within decentralized control cabinets. By integrating measurement and communication in a 12 mm wide slice, the unit simplifies installation and allows proximity mounting next to the transducer, which minimizes noise pickup and supports compact, scalable industrial automation architectures.
The terminal uses 2-wire sensor wiring, so both measurement and reference conductors are terminated at the same spring clamp pair, reducing channel count per sensor and easing field assembly. It draws approximately 200 mA from the E-bus, a figure that must be budgeted when populating large terminal strings. An analog input filter with a cutoff near 1 kHz attenuates higher-frequency interference before conversion. The sigma-delta converter provides a 16-bit internal resolution over selectable ranges of ±30 mV, ±60 mV, or ±75 mV, and it tolerates up to ±15 V between the differential leads without damage. For finely resolved measurements, the digitizing step is 1/2/4 μV per code, while an auxiliary calculation path offers a display resolution of 0.1/0.01 °C when the terminal is parameterized for thermocouple linearization.
Its four-channel architecture delivers data to the controller as a 16-byte input image while accepting 8 bytes of output for status and diagnostics. Each channel benefits from broken-sensor detection, so open-circuit conditions are flagged immediately. Installation flexibility is aided by a permitted sensor lead length of 30 m, provided that shielding practices are followed. The terminal meets the enclosure requirements of IP20, making it suitable for protected control cabinets, and galvanic separation rated at 500 V isolates the analog front end from the EtherCAT bus to prevent ground loops and protect downstream electronics.
Frequently Asked Questions about EL3314-0000:
Q: How many input channels are available on the EL3314-0000 terminal?
A: The EL3314-0000 terminal supports four separate inputs for connecting multiple sensors or devices simultaneously.
Q: What is the internal resolution of the EL3314-0000 terminal?
A: This terminal uses a 16-bit internal resolution, allowing for precise measurement and control in automation processes.
Q: What is the signal to bus isolation voltage of the EL3314-0000?
A: The signal to bus isolation for the EL3314-0000 terminal is rated at 500 V, providing electrical separation between the input signals and the bus system.
Q: What type of connection technology does the EL3314-0000 terminal use?
A: The EL3314-0000 makes use of 2-wire connection technology, simplifying wiring for compatible sensors.
Q: What voltage input ranges are supported by the EL3314-0000 terminal?
A: This terminal can measure voltage within ranges of ±30 mV, ±60 mV, and ±75 mV, supporting diverse signal types.
