EL3004 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
MPN: EL3004-0000
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Beckhoff EL3004 is an IP20-rated analog input terminal with 4 single-ended 2-wire channels. Part of the EL EtherCAT Terminals series, it features 12-bit resolution, a ±10 V signal voltage, and a typical measuring error below ±0.3% of full scale value. It receives power via the E-Bus and uses a multiplex sampling type with an input filter of 1 kHz.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The EL3004 analog input terminal is produced by Beckhoff within the EL EtherCAT Terminals series. As an I/O slice for EtherCAT networks, it digitizes field-level voltage signals so a controller can monitor sensors and process values in industrial automation tasks such as machine condition tracking or energy metering. The module installs on a DIN rail alongside other terminals and exchanges data with the bus coupler over the internal E-Bus, allowing high-density acquisition without external wiring harnesses.
The module provides 4 analog inputs that accept a bipolar range of ±10 V. Field devices are linked through a two-wire connection, keeping sensor cabling simple while maintaining a single-ended ground reference. The converter quantizes signals with a 12-bit resolution, so the controller receives 4,096 discrete steps across the span. The housing has an IP20 rating for protection against accidental contact, making the terminal suitable for enclosed control cabinets. Power for the electronics is supplied automatically through the E-Bus, and the supply conductors in the EtherCAT stack remain connected at the power contacts to feed downstream modules. The data image forwarded to the master consists of two status bytes and two value bytes per channel, organized in multiplexed order to minimize bandwidth.
The front end has a maximum dielectric strength of 30 V, protecting the low-level circuitry from brief wiring transients inside the cabinet. Signal conditioning begins with a 1 kHz input filter that suppresses higher-frequency noise before the multiplexer switches channels. Each input presents an impedance greater than 130 kΩ, so typical voltage sources are not loaded by the terminal. At ambient temperatures from 0 °C to 55 °C, total conversion uncertainty stays within ±0.3% FSV. Distributed-clock synchronization is not implemented, so time stamping must be handled by the upstream controller through the standard EtherCAT cycle. This arrangement allows the controller to collect measurements according to the timing of its regular bus updates.
