X20BR7300 B & R Automation
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The B & R Automation X20BR7300 is part of the X20 Fieldbus Input Output Modules series and supports a CAN I/O fieldbus interface. It offers an internal I/O supply power of 240 W and an I/O summation current of 10 Amps. This module has an operating humidity of up to 95 percent non-condensing and is rated for use at elevations from 0 to 2000 meters.
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Product Description:
The X20BR7300 I/O module is produced by B&R Automation and belongs to the X20 Fieldbus Input Output Modules series. It mounts on the X20 backplane to add signal channels to a distributed control system and uses the same housing profile as other members of the series, allowing mixed configurations without adapter plates. Within an automation cell, the module converts sensor states into deterministic bus data and forwards actuator commands from the controller, so machine sections can be expanded or serviced without rewiring the central cabinet. Its compact format also helps maintain uniform spacing across adjoining modules in a control station.
During operation, the module draws only 0.8 W of bus power, a value low enough to let several X20 nodes share one supply segment. Communication with the controller occurs over a CAN I/O interface, giving deterministic arbitration and short telegrams for time-critical reactions. Downstream devices are energized by an internal rail that can provide up to 240 W of I/O supply power, eliminating the need for separate power supplies on most tooling islands. The electronics remain functional on a horizontal mounting plane from -25 to 60 °C, so panels exposed to unconditioned factory air rarely need heaters. Altitude tolerance reaches 0 to 2000 m, allowing identical hardware to be used on mezzanine floors or elevated facilities without derating.
The local backplane itself must deliver 2 W of bus supply power, a planning figure for power-budget calculations in multi-slot assemblies. Attached valve manifolds and sensors can collectively draw up to 10 A of I/O summation current; above that threshold, separate feeders are required. Thermal conduction inside the housing limits dissipation to 1.5 W of maximum internal loss, keeping component temperatures within range when ambient humidity reaches 95% non-condensing. When the carrier is installed vertically, the allowable temperature band narrows to -25 to 50 °C, a constraint that guides cabinet layout so airflow rises naturally past the heat sinks. This orientation difference is important when the module is placed near other heat-producing devices in a tightly packed enclosure.
