The B&R X20PS9400 is a dedicated power supply module for the X20 I/O system that powers the bus controller and internal I/O while also serving as the X2X Link power supply. It mounts with the X20 bus base (X20BB82) and provides two expansion slots for additional X20 add‑on modules (IF, HB, etc.), enabling compact expansion within the X20 architecture. The package includes X20 end covers (X20AC0SL1 and X20AC0SR1) and is documented as a HW upgrade to version 2.6, reflecting BR Automation’s ongoing X20 system support. As part of the X20 family, the X20PS9400 integrates with BR’s X2X Link network to maintain power distribution and isolation across the X20 topology.
