Description The Beckhoff EL6631 is a PROFINET RT controller terminal designed to integrate PROFINET real-time communication into EtherCAT-based automation systems. With dual switched Ethernet ports and Class B conformance, it enables fast, reliable data exchange for up to 15 PROFINET RT devices in industrial environments. Technical Specifications Condition New/Never Used Surplus Manufacturer Beckhoff Category PLCs / Machine Control Subcategory PLC Programming Terminal Part Number EL6631 Technology PROFINET RT Number of Ports/Channels 2 (Switched) Ethernet Interface 100BASE-TX, 2 × RJ45 Fieldbus PROFINET RT Controller Protocol Support RT, Conformance Class B Max Process Data Size 1 kB Input / 1 kB Output Cable Length Up to 100 m (Twisted Pair) Hardware Diagnostics Status LEDs Power Supply Via E-bus Electrical Isolation 500 V (E-bus / Ethernet) Current Consumption (E-bus) ~400 mA Special Features LLDP, SNMP, Up to 15 RT Devices, ≥1 ms RT Cycle Operating Temperature 0…+55 °C Storage Temperature –25…+85 °C Relative Humidity 95%, Non-Condensing Protection Rating IP20 Vibration / Shock Resistance EN 60068-2-6 / EN 60068-2-27 Weight ~75 g Installation 35 mm DIN Rail Information About EL6631 The Beckhoff EL6631 is an EtherCAT terminal that functions as a full PROFINET RT controller, enabling real-time data exchange between EtherCAT systems and PROFINET field devices. Supporting Conformance Class B, the terminal provides complete RT functionality and can manage up to 15 PROFINET RT devices with a minimum real-time cycle time of 1 ms. Equipped with two switched 100BASE-TX Ethernet ports, it facilitates line topology installations and simplifies wiring. The EL6631 features 1 kB of maximum input and output data space, making it suitable for medium to large distributed control tasks. With electrical isolation, advanced diagnostics via LLDP and SNMP, and robust environmental specifications, it integrates seamlessly into PC-based and embedded Beckhoff automation solutions. Its compact IP20 form factor and DIN rail mounting make it ideal for control cabinet installations. Key Features PROFINET RT Controller Functionality: Enables EtherCAT systems to communicate in real-time with PROFINET RT field devices using Conformance Class B services. Dual Switched Ethernet Ports: Supports 100BASE-TX with two RJ45 connectors for line topology wiring and simplified network expansion. High-Speed Real-Time Operation: Offers a minimum RT cycle time of 1 ms, ensuring rapid and deterministic communication for time-critical automation tasks. Broad Device Support: Capable of projecting up to 15 PROFINET RT devices within a single network segment. Strong Network Diagnostics: Provides LLDP and SNMP support for topology detection, monitoring, and troubleshooting within industrial Ethernet networks. Robust Industrial Design: Includes 500 V isolation, shock and vibration compliance, and 0–55 °C operating range for dependable field performance. EtherCAT System Integration: Configurable directly via the EtherCAT master, ensuring smooth integration within Beckhoff control platforms. Compact and Efficient: Lightweight IP20 terminal powered directly from the E-bus, ideal for dense automation panels and distributed control cabinets. The EL6631 delivers the reliability and precision required for high-performance PROFINET RT communication within advanced EtherCAT automation systems.
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