X20BB32
The B & R Automation X20BB32 base module from the X20 Fieldbus Input Output Modules series provides a robust platform for distributed I/O and fieldbus CPU integration in industrial automation environments. This versatile bus base supports housing for an X20 fieldbus CPU or a power supply module, and delivers seamless communication via one integrated RS232 port. Certified to EAC and ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc standards, the X20BB32 ensures safe operation in potentially explosive atmospheres. With a low power consumption of 0.35 W and a nominal supply of 24 VDC, this module is engineered for energy-efficient performance across a range of industrial applications. It comes complete with left and right cover plates for immediate installation on any X20 mounting rail.
The X20BB32 features an IP20 ingress protection rating and precise module spacing of 62.5 ±0.2 mm to guarantee reliable electrical insulation and mechanical alignment. Its nominal voltage of 24 VDC supports voltage fluctuation margins of up to ±25%, while the permissible contact load of 10 A accommodates moderate current demands on downstream modules. Operating temperatures span –25 to 60 °C (horizontal) mounting and –25 to 50 °C (vertical) mounting orientations, with storage capability between –40 to 85 °C. The single RS232 connection interfaces directly with fieldbus CPUs, though note that this port is not electrically isolated from the bus.
Operationally, the X20BB32 accepts both horizontal and vertical mounting orientations without configuration changes, simplifying panel layouts. The front casing protects against ingress of solid objects greater than 12 mm, while ambient temperature stability ensures consistent performance across –25 °C to 60 °C. Module installation requires placement of the fieldbus CPU in the rightmost slot, leveraging the included cover plates for secure engagement. Its lightweight design and compact footprint facilitate rapid deployment in confined control cabinets and distributed architecture nodes.
System integration is straightforward: the X20BB32 serves as the standard bus base for nearly all X20 fieldbus CPUs, enabling flexible station configurations within the B&R Automation ecosystem. Ideal applications include machine control panels, remote I/O stations, and hazardous-area monitoring systems where ATEX certification is mandatory. The combination of industrial-grade robustness, precise module spacing, and multi-orientation mounting makes the X20BB32 a preferred choice for OEMs and system integrators seeking reliable, modular I/O expansion in complex automation networks.
