IE2403-0000 Beckhoff
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The Beckhoff IE2403-0000 is part of the IE Extension Box Units series and features 8 digital inputs and 8 digital outputs, totaling 16 channels. It provides a rated load voltage of 24 VDC, with output and sensor supply currents of 0.5 A per channel. The unit offers control and fieldbus isolation via IP-Link and has an IP20 protection class.
Internal Product Review
The IE2403-0000 is a Beckhoff IE extension box unit with 8 digital inputs and 8 digital outputs. IP-Link isolation and IP20 protection support clean integration in controlled industrial enclosures. A 24 VDC rated load voltage and 0.5 A/channel output current make this unit a strong choice for dependable distributed I/O service.
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Product Description:
The IE2403-0000 is an extension I/O box produced by Beckhoff for the IE Extension Box Units series. It adds decentralized digital signal capability to an IP-Link network, allowing a main Bus Coupler to collect field data and drive actuators without additional PLC racks. The unit combines input sensing and output switching in a single IP20 enclosure, so machine builders can place it close to sensors, valves, or light stacks while maintaining communication through the IP-Link backplane connection.
The module provides 8 digital inputs that form half of its overall 16 channels. Each input draws only 6 mA from the field wiring and passes through a 3.0 ms internal filter to suppress contact bounce or stray pulses. Input power and control signals are galvanically isolated from the upstream controller through the IP-Link connection, helping protect the CPU from ground loops. The process image allocates 8 bits to incoming data and 8 bits to outgoing data, matching the physical channel layout. An enclosure rating of IP20 indicates that the finger-safe terminals must be installed in a closed cabinet during operation. The output load stages have a static current consumption of 20 mA per channel when idle, which helps limit heat generation inside the cabinet.
The output bank consists of 8 digital outputs that switch a common plant supply of 24 V DC. Each channel can source up to 0.5 A per channel, and the same current limit applies to the integrated sensor supply rail, allowing proximity switches to receive power locally without additional breakers. If a load is short-circuited, the stage limits the current to 1.5 A to help prevent wiring damage. Downstream expansion continues through one four-pin M8 socket, while incoming power arrives through a separate four-pin M8 connector. The ZS2001 KM signal header provides internal routing between the logic core and the discrete driver circuits. This arrangement keeps field power, expansion communication, and signal routing on separate connections while retaining a compact installation footprint.
