Schneider TSXRKY12EX Extendable Rack

This rack provides mechanical support and backplane connectivity for Modicon TSX Micro PLC modules. It extends the system’s I/O capacity beyond the base controller’s built-in slots. Therefore, it enables modular growth for small to medium automation applications.

Technical Specifications of Schneider TSXRKY12EX

The Schneider TSXRKY12EX measures 22.0 cm in length and 12.0 cm in width. Its rack weight equals approximately 0.95 kg for panel or DIN rail mounting. A single 20-pin expansion connector links this rack to the base controller. Additionally, the rack provides four I/O module slots for system expansion.

Parameter	Specification
Brand	Schneider Electric
Full Model	TSXRKY12EX
Category	Extendable Rack (Expansion Chassis)
Dimensions (L x W x H)	22.0 cm x 12.0 cm x 8.5 cm (8.66″ x 4.72″ x 3.35″)
Rack Weight	0.95 kg (2.09 lbs)
Number of I/O Slots	4 Slots (TSX Micro Format)
Expansion Interface	1 x 20-pin Male Connector (via Ribbon Cable)
Expansion Cable	TSXCXKY12 (1 Meter, Sold Separately)
Backplane Type	Passive PCB with Gold-Plated Edge Connectors
Slot Assignment	Left to Right (Slot 1 to Slot 4)
Maximum I/O per Slot	Varies by Module (Up to 64 Digital Points per Slot)
Maximum Total I/O	256 Digital Points (with 4 Modules)
Power Supply Pass-Through	Yes (24 VDC from Base Controller)
On-Board Components	1 Passive Backplane PCB + 4 Injection-Molded Slot Guides + 1 Expansion Connector
Energy Storage	None (No Capacitors on Rack Backplane)
Signal Lines	Data Bus (8 Bits) + Address Bus (8 Bits) + Power (+5V, +24V)
Rack Material	Powder-Coated Steel
Mounting Type	DIN Rail (EN 50022) or Panel Mount (4 Holes)
Mounting Hole Diameter	5 mm (0.20 inches)
Grounding Connection	M4 Stud with Star Washer
Operating Temperature	0°C to +55°C (32°F to 131°F)
Cooling	Passive Convection (No Fans)
Status Indicators	None on Rack (Module LEDs Only)

Rack Layout and Expansion Connection

The Schneider TSXRKY12EX connects to a TSX Micro base controller using a ribbon cable. The expansion interface sits on the right side of this rack. Four I/O slots accept any TSX Micro digital or analog module. You can place this rack up to 1 meter away from the main controller. Thus, you gain flexible mounting options for distributed I/O.

Passive Backplane and Signal Routing

This expansion rack uses a passive backplane without active electronic components. Gold-plated edge connectors ensure reliable signal transfer to each module. The backplane routes data, address, and power signals to all four slots simultaneously. Consequently, no energy storage components exist on this rack PCB.

Installation and Mounting Information

You will find four mounting holes on the rack’s back panel for secure attachment. An M4 grounding stud sits near the expansion connector for proper earthing. The rack includes a DIN rail clip for tool-free mounting on EN 50022 rails. Therefore, this rack installs quickly in new or existing control panels.