Omron CJ1W-II101 Expansion I/O Interface

The Omron CJ1W-II101 is a compact and essential I/O expansion interface unit for CJ-series PLC systems, enabling the connection of up to three additional I/O expansion racks. Installed on the left-hand side of the expansion rack, this unit extends the reach of the main CPU rack to accommodate larger and more complex control architectures.

Engineered to maintain fast communication and signal integrity across multiple racks, the CJ1W-II101 simplifies scalable automation setups in applications ranging from packaging to process control.

Expansion System Specifications

Model: Omron II101
Unit Type: Expansion Interface Module
Function: Connects the main rack to up to 3 additional I/O expansion racks
Connection Orientation: Left-hand side of the expansion rack
Compatible PLC Systems: Omron CJ1, CJ2, and CJ1M series
Max Number of Expansion Racks: 3 (connected via dedicated interface cables)
Cabling: CJ1W-IC101/IC102 interconnecting cables required (sold separately)
Mounting Method: DIN rail via expansion rack frame

Electrical & Mechanical

• Power Supply: Provided by the expansion rack backplane
• Product Dimensions (W × H × D): 31 × 95.4 × 68 mm
• Weight: 96 g (unpacked)
• Terminal Type: Internal bus interface (no external wiring required)

Environmental Ratings

• Operating Temperature: 0 to 55°C
• Storage Temperature: –20 to 75°C
• Humidity Range: 10% to 90% RH (non-condensing)
• Altitude Limit: 2,000 m max
• Shock Resistance: Conforms to IEC 60068-2-27
• Vibration Resistance: Conforms to IEC 60068-2-6
• Protection Rating: IP20 (when panel-mounted)

System Integration

• I/O Bus Compatibility: CJ-series internal expansion bus
• Software Compatibility: CX-Programmer (no programming required for the interface itself)
• Rack Mounting: Enables installation of additional I/O, special I/O, and CPU Bus Units on remote racks
• Approvals: CE, cULus, RoHS compliant (refer to datasheet for full certification details)

Applications

Ideal for:

• Large-scale industrial automation systems
• Multi-rack CJ1 or CJ2 PLC installations
• Factory floor systems with high I/O density
• Modular machine control panels

Key Features & Benefits

✅ Scalable Design: Connects up to three additional expansion racks for system growth.

✅ Simple Integration: DIN rail mount and no external wiring needed.

✅ Compact Size: Only 31 mm wide, ideal for high-density control panels.

✅ Reliable Performance: Maintains fast and stable I/O refresh across racks.

✅ Fully Compatible: Seamless operation with CJ1/CJ2 series PLCs.

📦 Available from Drive Outlet Megastore

The Omron CJ1W-II101 is a must-have interface for building larger CJ-series PLC systems. With support for multiple I/O racks, this unit expands your control capabilities without sacrificing speed or footprint.

Contact us today for availability and expert integration support.

Build bigger. Expand smarter. Only at Drive Outlet.