Product Description:

The IL2301-B528-0000 is an I/O coupler produced by Beckhoff for the IL Coupler Box Units series. Acting as a distributed fieldbus station, it links localized sensors and actuators to a higher-level network so that machine controllers can collect input data and issue output commands over a single trunk. An integrated DeviceNet interface combines with an optical IP-Link extension bus, allowing this compact node to extend digital I/O to areas where cabinet-level terminals are impractical.

Its DeviceNet port is presented through an integrated tee connector, simplifying drop-line wiring while maintaining network continuity. Internally, the module offers 4 digital inputs for sensor status and 4 digital outputs for driving actuators. Both sets of channels use rugged connectors that lock by thread. The local IP-Link backbone runs at 2 Mbit/s, forwarding process data to downstream extension modules without extra cabling. The housing measures 210 × 30 × 26.5 mm, can be mounted in any orientation, and has two M3 mounting holes for direct fastening to machine frames. The housing is molded from PA6 to withstand vibration and oils commonly found on plant floors. A polyurethane potting compound fills the electronics cavity and isolates the fieldbus signals from the enclosure.

The housing provides IP65/66/67 ingress protection, allowing it to tolerate dust, low-pressure washdown, and brief immersion when its seals remain intact. Optical fiber IP-Link segments may be spaced up to 15 m apart, allowing additional boxes to be positioned near tooling while keeping modal noise low. Each channel terminates in a threaded M8 connector that provides strain relief during motion. Signal reliability is further improved by contacts made of gold-plated CuZn, which reduces oxidation and contact resistance throughout the module’s service life.