Product Short Description
Product Name: EtherCAT Terminal, 2-Channel Analog Input
Product Introduction: The EL3020 is a 2-channel analog input terminal module in Beckhoff’s EtherCAT Terminal (EL) series, designed for EtherCAT-based automation systems. It enables real-time acquisition of analog signals for Beckhoff CX/CP controllers.
Description
Technical Specifications:
- Manufacturer: Beckhoff Automation
- Series: EL (EtherCAT Terminal)
- Channels: 2 independent analog input channels
- Signal Type: 4–20 mA current input, 12-bit resolution (based on EL302x series standard)
- Differential Inputs: Yes, with common internal ground potential
- Electrical Isolation: Yes, electrically isolated transmission to higher-level automation device
- Communication: EtherCAT
- Diagnostics: Overload condition detection, open lead detection
- Status Indication: LED indicators for terminal signal state; error LEDs indicate overload condition and broken wire
Note: Beckhoff’s official EL30xx documentation directly lists EL3021 (1-channel, 4–20mA, 12-bit, differential) and EL3022 (2-channel, 4–20mA, 12-bit, differential). The EL3020 follows the same EL302x family architecture with 2-channel configuration.
Functional Features: High-speed analog input acquisition via EtherCAT distributed clock technology, universal signal compatibility, compact design, real-time signal acquisition with overload and broken wire detection.
Application Scenarios: Automotive, electronics manufacturing, packaging industries requiring real-time processing of dynamic analog signals (e.g., pressure fluctuation, robotic force sensing, process temperature monitoring).
Working Principle: The terminal processes analog current signals in the range of 4–20 mA, digitizes them with 12-bit resolution, and transmits the data in electrically isolated form to the higher-level automation device via EtherCAT. Overload or open lead conditions are detected and relayed to the controller via the E-bus.
Installation & Usage Notes: Install in EtherCAT I/O terminal stack. The terminal indicates its signal state via LEDs. Error LEDs indicate overload condition and broken wire. Input channels have differential inputs with a common internal ground potential.
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