EL3351 | Beckhoff EtherCAT Terminal 1-Channel Analog Input

Beckhoff · Cables & Connectivity

Description  The Beckhoff EL3351 is a 1-channel EtherCAT Terminal for analog input measurement using full bridge technology. It offers 16-bit resolution with a configurable measuring range of ±20 mV, making it suitable for precise strain gauge and sensor applications.     Technical Specifications  Condition New/Never Used Surplus Brand Beckhoff Category EtherCAT Terminals Part Number EL3351 Subcategory Analog Input Terminals Number of Inputs 2 (for 1 resistor bridge in full bridge configuration) Measuring Range UD ±20 mV Measuring Range UREF ±12 V Internal Resistance > 200 kΩ (UREF), > 1 MΩ (UD) Nominal Sensitivity Calculated in PLC, freely selectable Resolution 16-bit (32-bit presentation) Conversion Time 2.5…800 ms configurable, max. 400 samples/s Input Filter Default 50 Hz, parameterizable Measurement Error < ±0.1% of full scale (at 50 Hz filter) Power Supply (UV) 5 V DC, max. 20 mA Current Consumption E-bus Typical 170 mA Special Features Integrated 5 V DC bridge supply Power Contacts Consumption None Operating Temperature -25…+55°C Storage Temperature -40…+85°C Relative Humidity 95%, no condensation Vibration/Shock Resistance EN 60068-2-6 / EN 60068-2-27 EMC Compliance EN 61000-6-2 / EN 61000-6-4 Protection Rating IP20 Wiring Pluggable for ESxxxx terminals Dimensions Compact EtherCAT module design Approvals/Markings CE, UL, ATEX, CCC, IECEx Weight 60 g   Information About EL3351 The EL3351 is part of Beckhoff’s EtherCAT I/O system and is designed to acquire measurement signals from resistor bridges in full bridge configuration. It integrates a 5 V DC bridge supply, eliminating the need for external excitation sources, and supports freely selectable nominal sensitivities calculated within the PLC. With a default input filter at 50 Hz and a configurable conversion time ranging from 2.5 to 800 ms, it ensures precise and adaptable measurement performance. The terminal consumes 170 mA from the E-bus, provides up to 400 samples per second, and is optimized for reliable signal acquisition under industrial conditions. Key Features: High-Resolution Measurement: 16-bit resolution with 32-bit presentation for detailed signal acquisition. Full Bridge Support: Designed for connecting one resistor bridge in full bridge technology. Configurable Measuring Range: ±20 mV input range and ±12 V reference range with high internal resistance. Integrated Bridge Supply: Provides 5 V DC bridge excitation up to 20 mA without external hardware. Flexible Conversion Time: Adjustable from 2.5 ms to 800 ms, allowing up to 400 samples per second. Filter Options: Default 50 Hz input filter, fully parameterizable for application-specific needs. Low Measurement Error: Accuracy within ±0.1% of full scale at 50 Hz filter. Industrial Reliability: Conforms to EN standards for EMC, vibration, and shock resistance, with approvals including CE, UL, ATEX, CCC, and IECEx. The EL3351 delivers the reliability and precision required for accurate strain gauge and sensor measurement in demanding industrial environments.

Brand: Beckhoff · Category: Cables & Connectivity

Key features

• High-Resolution Measurement: 16-bit resolution with 32-bit presentation for detailed signal acquisition.
• Full Bridge Support: Designed for connecting one resistor bridge in full bridge technology.
• Configurable Measuring Range: ±20 mV input range and ±12 V reference range with high internal resistance.
• Integrated Bridge Supply: Provides 5 V DC bridge excitation up to 20 mA without external hardware.
• Flexible Conversion Time: Adjustable from 2.5 ms to 800 ms, allowing up to 400 samples per second.
• Filter Options: Default 50 Hz input filter, fully parameterizable for application-specific needs.
• Low Measurement Error: Accuracy within ±0.1% of full scale at 50 Hz filter.
• Industrial Reliability: Conforms to EN standards for EMC, vibration, and shock resistance, with approvals including CE, UL, ATEX, CCC, and IECEx.

Specifications

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