Beckhoff ELM3104-0000 EtherCAT Terminal 4-channel Analog Input Module

Description

Functioning as an ultra-precise sensor interface, the Beckhoff ELM3104-0000 delivers 4-channel analog current measurements directly to EtherCAT-enabled industrial control environments. This high-speed measurement terminal operates in the +/-20 mA range with an exceptional 24-bit resolution, satisfying the rigorous demands of dynamic processes and high-accuracy laboratory test benches. Housed in a robust zinc die-cast enclosure, it features advanced digital processing functions including oversampling up to 10 ksps per channel, TrueRMS calculations, and customizable digital filters to eliminate high-frequency field noise.

Features

• 4 simultaneous differential current measurement channels supporting +/-20 mA signals.
• High-speed delta-sigma A/D converters delivering up to 100 microseconds (10 ksps) sampling rates per channel.
• Flexible oversampling capability (factor n = 1 to 100) for high-resolution waveform acquisition.
• Integrated signal conditioning tools: TrueRMS calculation, integrator/differentiator, PeakHold, and non-linear scaling.
• Precision Distributed Clocks (DC) synchronization providing jitter accuracy far below 1 microsecond.
• Rugged zinc die-cast housing designed for optimal thermal dissipation and superior mechanical protection.
• Push-in service plugs for convenient, tool-free field wiring and swift module swap-outs.

Applications

• High-speed industrial test benches and dynamometers.
• Vibration monitoring and structural health tracking systems.
• Precision loop monitoring in chemical processing plants.
• Acoustic analysis and rapid transient signal logging.

Technical Specifications

Connections and Interfaces

Alternative Models & Compatibility

While standard EL3xxx series modules address general-purpose current tracking, the ELM3104-0000 high-precision measurement module requires TwinCAT 3 runtime integration to support advanced oversampling algorithms and full 24-bit resolution processing. This module is fully backward compatible with standard EtherCAT networks but necessitates a dedicated system bus layout capable of supplying its typical 490 mA E-bus power requirement.

Application Pitfalls & Engineering Notes

To maintain the 100 ppm accuracy specification, ensure that all current loops use shielded twisted-pair (STP) cabling. Electromagnetic interference in proximity to heavy frequency drives can induce noise, reducing the module's effective number of bits (ENOB). The zinc die-cast chassis must be mounted onto a well-grounded, oxidation-free 35 mm steel DIN rail to maintain optimal shield pathing and thermal dissipation under full 3 W load conditions.

Commissioning & Wiring Tips

Utilize the integrated 2-pin push-in service plugs for high-vibration applications. This feature allows rapid module replacement without individual wire extraction, minimizing wiring errors. When commissioning in TwinCAT, verify that Distributed Clocks (DC) are enabled for the terminal to align historical process inputs with sub-microsecond precision across multiple nodes.

Installation Guidelines