Beckhoff EL1262-0050 2-Channel Digital Input Terminal (5 V DC, Oversampling)

Description

The EL1262-0050 is a specialized EtherCAT Terminal from Beckhoff designed for high-speed signal acquisition. Featuring 2 channels with a nominal voltage of 5 V DC, this terminal excels in applications requiring precise timing, such as high-resolution event logging. Its key advantage is its oversampling capability, allowing it to sample input signals at up to 1 Msample/s (n = 1...1000 factor), providing an extremely fine-grained view of signal states that exceeds standard cycle times.

Features

• Oversampling Capability: Enables signal sampling at rates higher than the bus cycle time (max. 1 Msample/s).
• High-Precision Timing: Features Distributed Clocks (DC) support with precision << 1 µs, making it ideal for synchronized timestamping.
• Compact Design: Integrates advanced processing into a standard 12 mm wide housing.
• Flexible Input Logic: Supports 5 V DC logic signals, common in TTL-based sensors or high-speed encoder feedback interfaces.
• Galvanic Isolation: Ensures 500 V isolation between the E-bus and field potential, protecting the controller from signal-side surges.

Technical Specifications

Installation and Integration Notes

• Wiring: Utilizes 4-wire connection technology. Connections support solid (0.08–2.5 mm²) and flexible (0.14–1.5 mm²) conductors.
• Sync Configuration: Because this terminal uses Distributed Clocks, ensure that the EtherCAT Master (e.g., TwinCAT) is configured to synchronize the terminal's internal clock to the master clock to achieve the specified < 1 µs precision.
• Process Image: The process image includes both the input data and a 64-bit CycleCounter/latch, which is essential for tracking when specific samples occurred relative to the bus cycle.
• Environment: Designed for operation between 0 °C and +55 °C. Ensure proper airflow in the control cabinet when using multiple high-density terminals.