Schneider TSXRKY8EX Extendable Rack

Configured for multi-rack backplane expansion and modular I/O distribution within the Modicon Premium automation platform, the Schneider TSXRKY8EX (TSXRKY8EX Extendable Rack) provides direct physical/electrical execution.

Hardware Specifications

Industrial Backplane Architecture and X-Bus Signal Integrity

Multi-rack Modicon Premium architectures extend parallel processor buses across distributed chassis using high-speed X-Bus cables. The TSXRKY8EX extendable rack acts as a passive backplane hub housing TSXPSY power modules, TSXP57 processors, and specialized application or discrete I/O cards. Dual female 9-pin SUB-D connectors route differential X-Bus communication signals between primary and expansion racks without data loss or signal degradation, maintaining high-speed backplane throughput and microsecond-level I/O scan synchronization across complex automated installations.

Frequently Asked Questions

Q: What is the primary functional difference between the TSXRKY8EX and non-extendable TSXRKY8 racks?

A: The TSXRKY8EX features integrated 9-pin SUB-D X-Bus extension connectors allowing multi-rack topology expansion, whereas standard TSXRKY8 racks are limited to standalone single-rack configurations.

Q: Is a TSXPSY power supply required in every TSXRKY8EX expansion rack?

A: Yes. Every extension rack in an X-Bus architecture requires its own TSXPSY power supply module installed in the designated power slot to energize local backplane logic and I/O channels.

Field Installation Guidelines

• Mount the rack horizontally onto a 35 mm DIN rail or secure it firmly to a metal backplate using 4x M6 panel mounting screws.

• Ensure a minimum clearance of 100 mm above and below the rack to facilitate natural convection cooling across installed modules.

• Connect the X-Bus extension cable from the preceding rack to one of the female 9-pin SUB-D connectors, ensuring thumb screws are fully tightened.

• Install a TSXTBE100 line terminator into the unused SUB-D connector on the final rack in the expansion chain to ensure proper X-Bus impedance matching.

• Connect the chassis earth grounding terminal on the rack frame directly to the main enclosure ground bar using a heavy copper braid strap.