B&R Industrial Automation X20PS9400 Power Supply Module

X20PS9400 is a 24 VDC power supply module for B&R’s X20 I/O system that powers the X20 bus controller, the X2X Link supply, and internal I/O from the X20 power rail. Designed to mount in the X20 bus base alongside BC and HB modules, it serves as the dedicated feed for the bus controller and the X2X Link network, delivering a unified 24 V supply to control and I/O circuitry within the X20 ecosystem. The module includes an RS‑232 service interface for maintenance and diagnostics, enabling direct access to status and configuration details. Electrical data shows a 24 VDC input with the X2X Link supply drawing about 1.42 W and internal I/O drawing about 0.6 W; additional dissipated power depends on connected actuators and load. In terms of safety and compliance, X20PS9400 carries CE and UL/cULus markings and supports hazardous-location approvals such as ATEX Zone 2 II 3G Ex nA nC IIA T5 Gc IP20, Ta, per the product literature. The B&R ID code for this model is 0x1F8C, with the complementary X20cPS9400 listed as 0xD579, reflecting its place in BR’s X20 power-supply family. This power module is part of BR’s X20 power architecture, designed to provide centralized, compact 24 V power for the bus controller, X2X Link, and I/O within the X20 system, enabling reliable, cabinet‑level power distribution for automation applications.