IL2301-C900-0000 Beckhoff
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The IL2301-C900-0000 is a Beckhoff unit from the IL Coupler Box Units series, equipped with 4 local digital inputs and 4 local digital outputs. It features an IP-Link extension bus with a rate of 2 MBit/s and a fieldbus port using RJ45 connections. The controller supports five programming languages and complies with IEC 61131-3 standards, with a protection rating of IP65/66/67.
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Product Description:
The IL2301-C900-0000 is a compact coupler box unit engineered by Beckhoff for the IL Coupler Box Units series. Acting as the first node in a decentralized I/O branch, it translates IP-Link telegrams into four input bits and four output bits so sensors or actuators can be wired directly on the machine. A reinforced PA6 enclosure filled with polyurethane potting compound shields the electronics from vibration, liquids, and dust encountered in industrial automation environments.
The internal controller processes data with a word width of 16 bits, providing straightforward mapping of each channel to the higher-level PLC. Communication with the bus head is handled by the IP-Link backplane at 2 Mbit/s, while an external network can be bridged through the integrated RJ45 fieldbus port. Up to 120 additional extension modules may be daisy-chained, allowing large I/O islands to share a single cable run. Configuration parameters and cyclic variables are retained in 512 bytes of nonvolatile memory, so power cycling does not erase addressing or diagnostic data. A molded gasket system gives the housing an IP65/66/67 ingress rating, eliminating the need for an additional protective enclosure on washdown lines. This sealed design also permits the coupler box to be mounted close to connected equipment, which reduces the length and complexity of local wiring.
Signal integrity at the pin level is supported by gold-plated CuZn alloy contacts, and each sensor or actuator is attached through a rugged M8 threaded connector that resists loosening under vibration. The unit can be programmed according to the IEC 61131-3 standard, supporting five established languages so existing code libraries can be reused. Two M3 mounting holes simplify fastening to panels or machine frames, and the four local inputs and four outputs allow small tool heads to be wired without an additional terminal box. The compact housing can be positioned near sensors and actuators where cabinet-mounted I/O would require longer individual cable routes. Its decentralized layout allows the IP-Link connection to carry process data between the machine area and the bus head while the local connectors handle nearby field devices.
