The B&R X20BT9400 is a specialized bus transmitter module designed for use with the B&R X20 I/O system to extend connectivity and power to X67 remote segments via the X2X Link bus. It provides both internal I/O voltage distribution and X67 system supply, eliminating the need for a separate X67 power module in many configurations.

Featuring built‑in reverse polarity protection on the X2X power supply input and short‑circuit/overload protection, the X20BT9400 enhances system reliability in demanding industrial environments. Its diagnostic LEDs indicate bus and operating status, aiding commissioning and troubleshooting.

For installation, the module is mounted in the rightmost slot of the X20 base and paired with a compatible bus module such as X20BM11 or X20BM15 to ensure proper internal power distribution. Terminal blocks like X20TB12 are required for field wiring.

The X20BT9400 is widely used in PLC cabinets, distributed I/O islands, packaging machinery, process automation, and factory control applications where scalable automation and reliable fieldbus communication are essential.

Key Features

• X2X Link bus transmitter for modular I/O expansion
• Integrated 24 VDC supply for X67 and internal I/O segments
• Reverse polarity and short‑circuit protection for safe operation
• Overload‑proof design with diagnostic indication
• Compact 12.5 mm module width for space‑saving racks
• IP20 industrial protection rating
• Easy DIN‑rail mounting; plug‑in installation
• Compatible with B&R X20 bus modules and terminal blocks

Typical Applications

• Distributed PLC I/O stations
• Remote I/O segment expansion via X2X Link
• Packaging and material handling systems
• Industrial control panels and automation racks
• Machine I/O modular architecture
• Spare parts replacement and retrofit projects

FAQ

Q1: What is the X20BT9400 module used for?
A1: It is a bus transmitter that connects B&R X20 I/O systems to X67 remote segments via X2X Link while providing power and communication.

Q2: Does the module include protection features?
A2: Yes — it supports reverse polarity, short‑circuit and overload protection on the X2X power supply.

Q3: What accessories are required?
A3: You need a compatible bus module (e.g., X20BM11, X20BM15) and appropriate terminal blocks (such as X20TB12).

Q4: Where is this module typically used?
A4: It’s commonly used in modular PLC automation systems, distributed I/O configurations, and machine control cabinets.