EL3058 Beckhoff
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MPN: EL3058-0000
The EL3058 from Beckhoff is part of the EL EtherCAT Terminals series and features 8 analog single-ended inputs with a 12-bit resolution. It has a conversion time of 1.25 ms, an input filter cutoff at 1 kHz, and a typical E-bus current of 130 mA. The terminal's protection rating is IP20 and its dimensions are 15 x 100 x 70 mm.
Internal Product Review
The EL3058 is a Beckhoff EtherCAT analog input terminal with 8 analog inputs and 12-bit resolution. Single-ended measurement and a 1.25 ms conversion time support efficient signal acquisition in standard automation panels. IP20 protection gives the EL3058 a dependable industrial profile and makes the unit a strong choice for EtherCAT I/O assemblies.
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Product Description:
The EL3058 analog input terminal is produced by Beckhoff as part of the EL EtherCAT Terminals series. Designed for DIN-rail mounting beside other I/O modules, it converts low-level voltage signals into digital words so that a PLC or industrial PC can monitor sensors and transducers across the network. Each of the 8 analog inputs is referenced to the common supply ground, matching the terminal’s single-ended input configuration. This arrangement supports compact installations in which multiple field signals must be connected to a shared electrical reference.
Signals are digitized with 12-bit resolution, providing 4,096 discrete steps across the permitted measurement span. A complete channel update requires a conversion time of 1.25 ms, allowing rapid feedback for control loops and monitoring tasks. The terminal uses multiplex sampling, sequentially switching one converter across the channels to conserve board space while maintaining linearity. To suppress unwanted high-frequency components, the front end includes an input filter with a 1 kHz cutoff. Once converted, each measurement occupies 2 bytes, and an additional 2-byte status word for each channel extends the process image available to the controller. The status information allows the control system to evaluate measurement conditions alongside the corresponding analog value.
The terminal draws an E-bus current of 130 mA, while the separate sensor supply draws only 40 mA through the power contacts, minimizing thermal rise inside the cabinet. Electrical isolation provides a dielectric strength of 30 V, helping protect the logic core against field-side transients. The input network has an internal resistance of 85 Ω. An IP20 protection rating limits the terminal to enclosed panels that prevent exposure to moisture and small foreign objects. Its 15 × 100 × 70 mm footprint supports dense placement among adjacent EL terminals without requiring substantial additional rail space. Distributed Clocks are not supported, so applications requiring precise time synchronization must handle that function at the controller level.
