EL4031 Beckhoff
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MPN: EL4031-0000
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The EL4031 is an EtherCAT terminal manufactured by Beckhoff and is part of the EL EtherCAT Terminals series. It features one 16-bit analog output with a voltage range of -10 to +10 volts and offers 12-bit resolution and a measuring error of less than ±0.1% FS. The terminal draws 24 VDC power via power contacts, operates in temperatures from -25°C to +60°C, and has protection class IP20.
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Product Description:
The EL4031 analog output terminal is produced by Beckhoff within the EL EtherCAT Terminals series. Classified as a voltage module, it connects the EtherCAT I/O system to field hardware that requires adjustable ±10 V references, such as actuators, drive inverters, or data acquisition stages. By converting digital setpoints from the controller into a regulated analog level, the terminal supports deterministic motion and process regulation in distributed industrial automation cells.
The terminal provides one analog channel capable of generating an output span of −10 to +10 V, giving a full-scale range that covers common voltage-controlled devices in machinery. A digital-to-analog resolution of 12-bit divides that range into 4,096 discrete steps, enabling fine adjustment of actuator setpoints. Each new value settles within a conversion time of approximately 100 µs, so the module can follow high-speed control loops with minimal delay. The connected load must be greater than 5 kΩ to ensure that the amplifier remains in its linear operating region. The analog stage typically draws 40 mA from the 24 V power contacts when delivering the maximum output level. The communication electronics require an additional 140 mA from the E-bus backbone, allowing power supply and backplane current requirements to be calculated accurately.
Process data are transferred as a 1 × 16-bit analog output entry in the controller image, and timing can be synchronized through the EtherCAT Distributed Clocks feature. The conversion path uses multiplexed sampling and a single-ended ground reference, simplifying wiring to loads that are sensitive to common-mode signals. Factory calibration limits the measuring error to ±0.1% FS, improving closed-loop accuracy. Supply power is provided as 24 VDC through the power contacts, so an auxiliary voltage rail is not required. The permitted operating temperature ranges from −25 °C to +60 °C. The insulated housing has an IP20 protection rating and is intended for installation inside a cabinet.
