Description
The Beckhoff EL3112 is a 2-channel EtherCAT Terminal for differential analog current measurement in the range of 0–20 mA. With 16-bit resolution, fast conversion time, and advanced filter options, it ensures accurate data acquisition in industrial automation systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Beckhoff |
| Category |
I/O Terminals |
| Part Number |
EL3112 |
| Subcategory |
EtherCAT Analog Input Terminals |
| Protocol |
EtherCAT |
| Number of Inputs |
2 (differential) |
| Signal Current |
0…20 mA |
| Resolution |
16-bit (including sign) |
| Conversion Time |
~50 µs (fast mode ~35 µs) |
| Input Filter Limit Frequency |
5 kHz |
| Common-Mode Voltage |
max. 10 V |
| Internal Resistance |
typ. 85 Ω + diode voltage |
| Measurement Error |
< ±0.3% (relative to full scale) |
| Distributed Clocks |
Yes |
| Distributed Clock Precision |
< 1 µs |
| Surge Voltage Resistance |
35 V DC |
| Electrical Isolation |
500 V (E-bus/signal voltage) |
| Current Consumption (E-bus) |
typ. 170 mA |
| Power Supply |
via E-bus |
| Bit Width in Process Image |
Inputs: 8 byte |
| Special Features |
Standard/compact process image, FIR/IIR filters, limit value monitoring |
| Operating Temperature |
-25…+60 °C |
| Storage Temperature |
-40…+85 °C |
| Relative Humidity |
95%, no condensation |
| Dimensions (W x H x D) |
12 x 100 x 68 mm |
| Material |
Polycarbonate |
| Installation |
35 mm DIN rail (EN 60715) with lock |
| Weight |
approx. 55 g |
Information About EL3112
The EL3112 is part of Beckhoff’s EtherCAT I/O terminal family, designed for precise analog current measurement in distributed automation systems. It features two differential inputs capable of measuring currents in the 0–20 mA range, supporting high-resolution data acquisition for process monitoring and control. With 16-bit resolution, distributed clocks with <1 µs precision, and fast conversion times down to 35 µs, the EL3112 offers both speed and accuracy for demanding applications. Its advanced features include configurable FIR/IIR filters, compact or standard process image modes, and limit value monitoring, making it suitable for a wide variety of industrial control environments.
Key Features:
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Dual Analog Inputs: Provides two differential input channels for current signals up to 20 mA.
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High Resolution: 16-bit signed resolution ensures accurate measurement and fine signal detail.
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Fast Conversion Time: Supports standard conversion at 50 µs and fast mode at 35 µs for dynamic applications.
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Advanced Synchronization: Distributed clock support with <1 µs precision enables precise system-wide timing.
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Flexible Filtering Options: Configurable FIR/IIR filters and 5 kHz input bandwidth improve signal quality.
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Integrated Safety Features: Limit value monitoring and 35 V surge voltage resistance protect connected systems.
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Rugged Industrial Design: Electrically isolated up to 500 V between E-bus and signal voltage for secure operation.
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Compact Form Factor: Slim 12 mm housing with DIN rail installation allows easy integration into control cabinets.
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Wide Environmental Tolerance: Operates between -25 °C and +60 °C and supports up to 95% humidity without condensation.
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Low Power Consumption: Draws only 170 mA from the E-bus for efficient system operation.
The EL3112 delivers the reliability and precision required for high-speed, high-accuracy current measurement in EtherCAT-based industrial automation systems.
