EK1101 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The Beckhoff EK1101 is an EtherCAT Coupler from the EK EtherCAT Couplers series, supporting a baud rate of 100 MBaud and two RJ45 bus connections. It handles up to 4.2 GB I/O points, provides an isolation voltage of 500 V, and has a protection rating of IP20. The coupler supports a maximum EtherCAT terminal count of 65535 and operates on a 24 VDC supply voltage.
Internal Product Review
The EK1101 is a Beckhoff EtherCAT coupler with 2 x RJ45 bus connections and support for Ethernet 100BASE-TX. Fast 100 MBaud communication and a 1 µs propagation delay give this unit crisp, efficient network response in demanding control architectures. IP20 protection and support for up to 65,535 EtherCAT terminals make this coupler an excellent choice for scalable industrial I/O systems.
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Product Description:
The EK1101 is an EtherCAT coupler supplied by Beckhoff for the EK EtherCAT Couplers series. Installed at the head of a terminal string, it converts real-time EtherCAT telegrams on the network side to the internal terminal bus, allowing standard Beckhoff I/O terminals to communicate with the controller without additional wiring. In an automation cell, this device acts as the boundary between the high-speed fieldbus and the local sensors, actuators, or process valves that require deterministic data exchange.
Network communication operates at a data rate of 100 Mbaud over Ethernet 100BASE-TX and uses two RJ45 ports that support line or drop topology. The coupler forwards frames to as many as 65,535 downstream EtherCAT terminals, and node discovery remains fast because internal processing introduces a propagation delay of only 1 µs. Electrical separation between field and logic domains is maintained by an isolation voltage of 500 V, protecting the CPU and neighboring modules from electrical noise or ground loops during high-frequency switching.
The power contacts can deliver up to 10 A at 24 V DC, so supply rails for digital outputs or valve solenoids can be routed through the terminal stack without external distribution blocks. The housing has an IP20 protection rating and clips onto a 35 mm DIN rail commonly used in control panels. Operation is supported at relative humidity levels of up to 95%, allowing the coupler to function in demanding industrial enclosures when condensation is prevented. The device recognizes 4,096 Hot Connect IDs, enabling flexible management of terminal segments while the bus remains energized. Its peripheral capacity reaches 4.2 GB of I/O data, allowing large systems to be connected behind a single coupler without exceeding the available address range.
