EL6631-0000 Beckhoff
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The Beckhoff EL6631-0000 is part of the EL EtherCAT Terminals series and features a PROFINET RT controller fieldbus with two 100BASE-TX Ethernet ports. It has a protection class of IP20, is constructed from polycarbonate, and measures 24 by 100 by 52 mm. This terminal supports up to 15 RT devices, mounts on a 35 mm DIN rail, and uses push-in connection wiring.
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Product Description:
The EL6631-0000 EtherCAT terminal is manufactured by Beckhoff as part of the EL EtherCAT Terminals series. It functions as a communication bridge that lets an EtherCAT controller operate devices on a PROFINET real-time network, so it is used where decentralized I/O must exchange deterministic data with higher-level Ethernet segments. By sliding this gateway into a standard terminal row, a system can add PROFINET access without a separate stand-alone coupler, which helps keep the control cabinet compact and consistent with the EtherCAT wiring concept. The terminal is suited for compact machine cabinets where mixed industrial Ethernet networks must coexist within one control platform.
All interfaces are intended for cabinet integration. The plastic body is molded from polycarbonate and measures 24 × 100 × 52 mm. Two RJ45 sockets deliver 100BASE-TX Ethernet signaling, and the built-in switch provides two network ports for line or star topologies through the push-in E-bus connection. The housing is rated IP20, and the wiring distance can reach 100 m of twisted-pair cable before regeneration is required. Real-time operation uses a minimum cycle time of 1 ms, and the internal buffer accepts up to 1 kbyte input/1 kbyte output per cycle. The field side follows the PROFINET RT controller profile, while Cat 5e cabling and shield continuity help preserve deterministic data transfer. Front-facing network jacks keep the field connection separate from the internal backplane path.
Up to 15 PROFINET RT devices can be scanned from one terminal, and telegram scheduling complies with Conformance Class B so distributed clocks and record data services are supported. The module snaps onto a 35 mm DIN rail, where it draws system logic and sensor power via the E-bus, eliminating the need for a separate supply harness. Data passes from EtherCAT through the internal backplane, so only the RJ45 jumpers remain visible at the front. This arrangement keeps front access simple and leaves the power distribution inside the terminal stack.
Frequently Asked Questions about EL6631-0000:
Q: How many real-time devices can be connected to the EL6631-0000?
A: This terminal supports a maximum of 15 real-time devices on its PROFINET RT controller interface.
Q: What type and number of Ethernet interfaces are available on the EL6631-0000?
A: The EL6631-0000 features two 100BASE-TX Ethernet ports using RJ45 connectors for communication.
Q: What is the minimum real-time cycle time supported by the EL6631-0000?
A: The minimum real-time cycle for this terminal is 1 millisecond, allowing fast communication.
Q: What is the maximum process data size supported by the EL6631-0000?
A: Process data is supported up to 1 kbyte for both input and output on this model.
Q: How is the EL6631-0000 terminal mounted and wired?
A: This module is mounted on a 35 mm DIN rail and uses push-in wiring connections for quick installation.
