IL2301-B318-0000 Beckhoff
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The Beckhoff IL2301-B318-0000 is part of the IL Coupler Box Units series and features four digital inputs and four digital outputs. It supports PROFIBUS fieldbus, operates at 24 VDC control voltage, and uses an IP-Link extension bus. The unit is housed in a PA6 polyamide enclosure with IP65/66/67 protection class and includes an integrated tee-connector bus topology.
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Product Description:
The IL2301-B318-0000 is an I/O coupler box produced by Beckhoff within the IL Coupler Box Units series. Designed for decentralized control architectures, the device bridges machine-level sensors and actuators with a central controller while remaining mounted directly on the equipment. Its polyurethane-potted electronics, polyamide shell, and nickel-plated brass hardware let the unit operate in machining cells, conveyors, and packaging lines, where distributed I/O shortens cable runs and minimizes panel space. Any installation position is permitted because the internal circuitry is orientation-independent.
A control supply of 24 VDC powers the logic section and feeds the output drivers through internal power distribution. Network communication is carried on PROFIBUS, providing cyclic data exchange for deterministic process control. The module offers 4 digital inputs that accept PNP signals, while four transistor outputs switch actuators up to 24 V for valves or lamps. To withstand dust, oil, and wash-down cleaning, the enclosure is certified to IP65/66/67. Field wiring is attached through keyed M8 bolted connectors, allowing fast replacement without opening the housing. Galvanic isolation separates the control domain from the fieldbus to prevent ground loops, and gold-plated copper-zinc contacts maintain low resistance across thousands of mating cycles.
Further expansion is achieved with the IP-Link backplane, so additional boxes share both data and power through a single hybrid cable. A maximum of 120 extension units can be chained, supporting long production lines while retaining one PROFIBUS address. The built-in Integrated Tee-Connector lets the trunk continue past the coupler without external junction hardware, simplifying branch creation. The housing is molded from PA6 (Polyamide), and two M3 mounting holes provide secure fastening on machine frames. Control-to-fieldbus isolation remains active across the chain, and the tee design preserves signal integrity when units are added or removed.
Frequently Asked Questions about IL2301-B318-0000:
Q: What fieldbus protocol is supported by the IL2301-B318-0000 coupler box?
A: The IL2301-B318-0000 integrates a PROFIBUS fieldbus interface for communication.
Q: How many digital inputs and outputs does the IL2301-B318-0000 offer?
A: This model provides four digital inputs and four digital outputs for signal processing.
Q: What material is used for the housing of the IL2301-B318-0000?
A: The housing of this coupler box is made from PA6 polyamide.
Q: What protection class does the IL2301-B318-0000 provide?
A: The IL2301-B318-0000 is rated for IP65, IP66, and IP67 protection against dust and water.
Q: What is the required control voltage for the IL2301-B318-0000 coupler box?
A: A control voltage of 24 VDC is required for operating the IL2301-B318-0000.
