IE2301-0000 Beckhoff
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The IE2301-0000 is an extension box unit manufactured by Beckhoff as part of the IE Extension Box Units series. It features 4 digital inputs and 4 digital outputs, with short-circuit proof outputs and a rated load voltage of 24 VDC. The device supports a maximum output current of 0.5 A and provides inverse polarity protection.
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Product Description:
The IE2301-0000 extension box from Beckhoff belongs to the IE Extension Box Units series. As a compact field I/O module, it brings four input and four output channels to machines, letting controllers gather sensor states and switch actuators close to the process. By housing the electronics in a metal body with decentralized mounting, it reduces cabinet wiring while sustaining deterministic signal exchange on the host fieldbus.
The module provides 4 digital inputs; each line is filtered for 3.0 ms to suppress contact bounce and is limited to an acquisition current of 6 mA, allowing standard two-wire sensors to be read without excessive current draw. A dedicated optocoupler stack provides control-to-fieldbus isolation, preventing ground loops between the upstream controller and the local machine ground. Miswiring of the supply does not damage the device because inverse polarity protection disconnects the internal rails whenever the voltage is reversed. Incoming signals are routed through M8 screw-in connectors, and the downstream bus continues through a single 4-pin M8 socket so additional boxes can be connected in a daisy chain. The unit occupies four input bits in the controller’s process image, making every channel available in one update cycle.
On the actuator side, the unit offers 4 digital outputs that can each source up to 0.5 A to solenoids or indicator lamps. All outputs share a supply of 24 VDC, are short-circuit protected, and trip at a per-channel limit of 1.5 A to prevent wiring damage. The electronics draw a continuous load current of 20 mA per channel, while a separate sensor supply delivers 0.5 A per channel to external devices. Command data for the outputs occupies the remaining four bits of the process image. The power feed arrives through a dedicated 4-pin M8 connector, and signal wiring uses the standard M8 screw-in interface, providing symmetrical cabling for inputs and outputs.
