IL2301-B528 Beckhoff
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MPN: IL2301-B528-0000
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The IL2301-B528 is a coupler box unit manufactured by Beckhoff as part of the IL Coupler Box Units series. It features 4 digital inputs and 4 digital outputs, and uses a DeviceNet bus protocol with an integrated tee-connector. The extension interface is IP-Link over optical fiber, and it carries an IP65/66/67 protection class for durability in harsh environments.
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Product Description:
The IL2301-B528 is a discrete I/O coupler module produced by Beckhoff as part of the IL Coupler Box Units series. This compact field device bridges distributed sensors or actuators with higher-level control networks in industrial automation. By combining signal marshalling and network conversion in one enclosure, the unit simplifies decentralized machine layouts and reduces cabinet wiring demands. Its decentralized format allows I/O points to be placed close to the process, which helps shorten field wiring runs and keeps machine layouts more flexible.
Communication is handled through the DeviceNet fieldbus, and the line tap is realized by an integrated tee connector, so the trunk and drop can be wired without external fittings. Four sensor channels arrive as 4 digital inputs, while actuator commands leave through 4 digital outputs, allowing bidirectional bit-level control at the installation point. The enclosure has an IP65/66/67 rating, so dust and high-pressure water jets do not affect operation. A molded PA6 (polyamide) housing, reinforced by a polyurethane casting compound, shields the electronics from vibration and moisture. The contacts are made from gold-plated CuZn for low resistance, and signals are brought in through M8 bolted connectors that lock against shock.
The internal IP-Link backplane tunnels data over optical fiber to downstream I/O islands, and the coupler can relay information to as many as 120 extension modules before a new segment is required. This arrangement allows additional remote I/O points to be added along the machine without moving the coupler back to a central enclosure. It also supports distributed layouts where several machine sections need local connections rather than a single centralized wiring point. Two M3 mounting holes permit direct fastening on panels or machine frames, and the permitted installation position is unrestricted, so orientation does not affect cooling or sealing. Nickel-plated brass hardware reinforces threaded inserts, and the bus-side tee maintains continuous grounding through the metal parts.
Frequently Asked Questions about IL2301-B528:
Q: How many extension modules can be connected to the IL2301-B528?
A: The IL2301-B528 coupler box supports up to 120 extension modules for system scalability.
Q: What bus protocol is used by the IL2301-B528 coupler box?
A: This model communicates using the DeviceNet bus protocol.
Q: How many digital inputs are available on the IL2301-B528?
A: The IL2301-B528 offers four digital inputs to interface with field devices.
Q: What material is used for the housing of the IL2301-B528?
A: Housing is made of PA6 (polyamide), providing durability for industrial environments.
Q: What level of protection does the IL2301-B528 offer?
A: The IL2301-B528 achieves a protection class of IP65/66/67 to guard against dust and water ingress.
