EL4008 Beckhoff
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MPN: EL4008-0000
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The Beckhoff EL4008 is part of the EL EtherCAT Terminals series and provides 8 analog outputs with a 12-bit resolution. It operates on a 24 VDC power supply, offers a signal voltage range of 0 to 10 V, and supports installation on a 35 mm DIN rail. This terminal uses electronics via E-Bus, features IP20 protection, and is short-circuit proof.
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Product Description:
The EL4008 is an analog output terminal produced by Beckhoff for the EL EtherCAT Terminals series. Installed within an EtherCAT I/O station, the module converts digital setpoints from a controller into voltage levels for valves, drives, or other field devices that accept standardized control voltages. This compact terminal integrates directly with the EtherCAT backplane, allowing voltage output capability to be added without separate signal conditioners or standalone modules. Its narrow format also conserves cabinet space when several I/O functions are installed together in the same station.
Each terminal offers 8 individually configurable channels that generate outputs over a unipolar range of 0 to 10 V. Supply energy is drawn from the system’s 24-volt control circuit, so only a 24 VDC feed is required on the power contacts. Output data is processed with a 12-bit resolution, translating the controller’s word into 4,096 discrete voltage steps for precise motion or process control. Conversion follows a multiplex scheme, meaning the circuitry updates one channel at a time in rapid succession to reduce the component count while maintaining deterministic timing. The housing provides IP20 protection, so the unit is intended for installation inside an enclosed cabinet where exposure to dust and accidental contact is controlled.
The terminal includes a clip for a 35 mm DIN rail, supporting quick insertion at the required position along the rail. It receives electronics power via the E-bus, removing the need for individual power wiring between adjacent terminal slices. The terminal supports the EtherCAT Distributed Clocks function for synchronized operation and maintains a single-ended reference through a built-in common ground for all channels. Short-circuit monitoring shuts down an affected channel when the connected load impedance falls too low, helping protect the output circuitry. A variable installation position permits horizontal or vertical mounting without derating. The process image occupies eight 16-bit words, aligning each analog output with its own register for straightforward mapping in PLC software.
