EL3356 | Beckhoff EtherCAT 1-Channel Load Cell/Bridge Measurement Input Terminal With 16-Bit Resolution

Beckhoff · Cables & Connectivity

Description The Beckhoff EL3356 is a 1-channel EtherCAT input terminal designed for precise measurement of full-bridge sensors such as load cells and strain gauges. It supports 4-wire and 6-wire bridge connections and calculates load values by evaluating both bridge voltage and reference voltage simultaneously. With self-calibration, dynamic filtering, and rapid measurement cycles, the terminal provides high-accuracy data acquisition for weighing and force-measurement applications.     Technical Specifications Condition New/Never Used Surplus Brand Beckhoff Category PLCs/Machine Control Part Number EL3356 Subcategory VDC Logic I/O Module Number of Inputs 2 (for 1 full-bridge resistor sensor) Signal Type Differential Technology Resistor bridge / strain gauge Power Supply Via E-bus Measuring Range UD Max. ±27 mV Measuring Range UREF Max. ±13.8 V Internal Resistance >200 kΩ (UREF), >1 MΩ (UD) Input Filter Frequency 10 kHz low-pass (-3 dB) Conversion Rate 100…4 samples/s (10…250 ms) Resolution 16-bit, 32-bit presentation Measurement Uncertainty < ±0.01% for calculated load value Supported Nominal Sensitivity All; parameter resolution 0.01 µV/V Special Features Self-calibration, dynamic filters, quadruple averager Power Supply UV Up to 12 V DC from power contacts (sensor-dependent) Current Consumption (Power Contacts) Min. 1 mA (depending on strain gauge) Current Consumption (E-bus) Typically 210 mA Operating Temperature 0…+55 °C Storage Temperature –25…+85 °C Relative Humidity 95%, non-condensing Vibration/Shock Resistance EN 60068-2-6 / EN 60068-2-27 EMC Compliance EN 61000-6-2 / EN 61000-6-4 Protection Rating IP20 Installation Position Variable Weight Approx. 60 g Pluggable Wiring Compatible with ESxxxx terminals Approvals CE, UL, ATEX, IECEx     Information About EL3356 The EL3356 is part of the Beckhoff EtherCAT I/O system and is engineered specifically for bridge-based sensing technologies, including strain gauges and load cells. It determines the ratio of bridge voltage (UD) to supply voltage (UREF) within the input circuit, generating precise digital load values based on module configuration. The terminal provides automatic self-calibration, optional deactivation, and multiple dynamic filter options to ensure accuracy even during slow or gradual weighing processes. Designed for industrial environments, the module integrates seamlessly via the EtherCAT E-bus, supports full-bridge measurement technology, and delivers stable, high-resolution data suitable for advanced automation tasks. Key Features: Full-bridge measurement support: Direct connection for load cells and strain gauge bridges. 4-wire and 6-wire compatibility: Ensures accurate compensation and stable sensor readings. Simultaneous UD/UREF evaluation: Enables precise ratio-based load calculation. Self-calibration function: Maintains measurement accuracy; can be disabled if required. Dynamic filtering: Improves stability for slow or high-precision weighing operations. 10 ms measuring cycles: Provides fast response for real-time measurement tasks. 16-bit resolution with 32-bit output: Ensures high-fidelity digital representation of sensor signals. Wide measuring ranges: Supports ±27 mV bridge signals and ±13.8 V reference levels. High input impedance: >1 MΩ for UD and >200 kΩ for UREF for minimal sensor loading. Robust EMC and vibration resistance: Conforms to EN 61000-6-2/6-4 and EN 60068-2-6/27. E-bus powered: Simplifies system wiring within EtherCAT terminal arrays. ATEX and IECEx approved: Suitable for use in hazardous industrial environments. The EL3356 delivers the reliability and precision required for high-accuracy weighing, force measurement, and bridge-sensor monitoring in EtherCAT automation systems.

Brand: Beckhoff · Category: Cables & Connectivity

Key features

• Full-bridge measurement support: Direct connection for load cells and strain gauge bridges.
• 4-wire and 6-wire compatibility: Ensures accurate compensation and stable sensor readings.
• Simultaneous UD/UREF evaluation: Enables precise ratio-based load calculation.
• Self-calibration function: Maintains measurement accuracy; can be disabled if required.
• Dynamic filtering: Improves stability for slow or high-precision weighing operations.
• 10 ms measuring cycles: Provides fast response for real-time measurement tasks.
• 16-bit resolution with 32-bit output: Ensures high-fidelity digital representation of sensor signals.
• Wide measuring ranges: Supports ±27 mV bridge signals and ±13.8 V reference levels.
• High input impedance: >1 MΩ for UD and >200 kΩ for UREF for minimal sensor loading.
• Robust EMC and vibration resistance: Conforms to EN 61000-6-2/6-4 and EN 60068-2-6/27.
• E-bus powered: Simplifies system wiring within EtherCAT terminal arrays.
• ATEX and IECEx approved: Suitable for use in hazardous industrial environments.

Specifications

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