It belongs to the standard power supply modules of the B&R X20 series. The module connects to the bus controller via the X2X Link interface, providing a stable and reliable power supply for PLC systems.

1. Core Functions and Features

• Connection Method: Connected via the X2X Link interface, supporting electrical isolation between the bus controller and the power supply module.
• Redundancy and Parallel Operation: Supports parallel operation of power supply modules. In applications requiring higher current capacity or power redundancy, multiple PS 9400 units can be connected in parallel to improve system reliability.

• 2. Technical Specifications (Typical Values)

• Parameter	Description
  Voltage	24 V DC (input)
  Current / Power	9.4 A (approx. 226 W)
  Rated Power	2100 W
  Connector	X2X Link (dedicated interface)
  Compatibility	Suitable for all B&R X20 systems based on X2X Link (e.g., X20CP series CPUs, X20BM11 communication modules, etc.)

• 3. Application Scenarios
• Standard PLC Power Supply: Provides the main power supply for X20 series PLC controllers (such as X20CP series CPUs).
• Fieldbus Systems: In complex fieldbus networks, the PS 9400 supplies reliable power to distributed I/O modules via the X2X Link.
• Power Redundancy: In systems with high reliability requirements, two PS 9400 modules are often used in parallel to prevent system downtime caused by a single point of failure.

• Summary
• The B&R X20 PS 9400 is an indispensable power supply component in B&R X20 automation systems, ensuring continuous and stable operation of bus controllers and internal I/O modules.