Beckhoff EL2904 EtherCAT Digital Output Terminal Module

Description

Beckhoff EL2904 EtherCAT Digital Output Terminal Module

Beckhoff EL2904 refers to a specific industrial automation component manufactured by Beckhoff Automation. It is an EtherCAT Terminal, specifically a 4-channel digital output terminal with TwinSAFE functionality

Key Specifications:

• • • Type: EtherCAT Terminal (part of the Beckhoff I/O system)
    • Functionality: Digital Output
    • Channels: 4 channels
    • Voltage: 24 V DC
    • Max Output Current: 0.5 A per channel
  • TwinSAFE: This is a crucial feature. Twin-SAFE is Beckhoff’s safety technology that allows for functional safety applications over the standard EtherCAT network (Safety over EtherCAT – FSoE). This means the EL2904 is designed for safety-critical applications, standards like DIN EN ISO 13849-1:2008 (Cat. 4, PL e) and EN 61508:2010 (SIL 3).
  • Fail-Safe Outputs: It has four fail-safe outputs, meaning it will automatically switch off (fail-stop) if it detects a fault.
  • Safe Motion Control: In conjunction with TwinSAFE drive components, it can be used for safe torque off (STO) or other safe motion functions.
  • Power: Its outputs are controlled by a TwinSAFE Logic-capable component (like the EL6900 TwinSAFE logic terminal) via FSoE.
  • Integrated Diagnostics: It often includes features like integrated current measurement and test functions for the channels to detect issues like cross-circuits.
  • Application: Used to switch 24 V DC actuators (like contactors, relays, etc.) in safety-relevant industrial automation systems.