Description

The BECKHOFF EJ3048 is an EtherCAT plug-in module equipped with eight single-ended analog inputs. Designed for integration with application-specific signal distribution boards, this device processes current signals in the 0 to 20 mA range with a 12-bit resolution. As part of the EJ system architecture, it combines the communication performance of EtherCAT with a space-saving plug-in design suited for modular machine manufacturing and control cabinet applications.

This module features activatable FIR and IIR filters, limit value monitoring, and configurable conversion times to adapt signal processing behavior to specific application requirements. Electrical isolation protects internal electronics from field-side potential differences, while power for the internal electronics is supplied via the E-bus.

Features

• Eight single-ended analog input channels for 0 to 20 mA current signals
• Plug-in module architecture designed for connection to backplane or signal distribution boards
• 12-bit resolution with 16-bit data presentation including sign
• Configurable conversion time with a default setting of 1.25 ms
• Activatable FIR and IIR filters for signal conditioning
• Integrated limit value monitoring functions
• E-bus powered internal electronics with 500 V electrical isolation between E-bus and field potential

Applications

• Industrial automation and modular machine building utilizing plug-in I/O architectures
• Acquisition of analog sensor signals such as 4 to 20 mA industrial transmitters
• Process monitoring and control loops requiring configurable input filtering
• Compact control cabinet installations utilizing backplane signal distribution

Technical Specifications

General

Electrical

Performance

Mechanical and Environmental

Installation Guidelines

1. Verify that the control system and power supplies are fully de-energized before handling the module.
2. Inspect the BECKHOFF EJ3048 module and the target plug-in connection slot for damage or contamination.
3. Carefully align the module pins with the corresponding slots on the application board and insert the unit securely.
4. Ensure proper seating and mechanical retention on the distribution board as specified in the system documentation.
5. Check all field-side wiring connections to the signal distribution board prior to system startup.
6. Power on the system and verify module communication via TwinCAT and diagnostic LED indicators.