CJ2M-CPU31 Programmable Logic Controller with High-Speed Processing and Ethernet Connectivity

Omron CJ2M-CPU31 Programmable Logic Controller - Industrial Automation CPU Unit

The Omron CJ2M-CPU31 represents the pinnacle of industrial automation control technology, delivering exceptional performance as part of Omron's premium CJ2 series PLC platform. This high-speed programmable logic controller CPU unit is engineered for mission-critical automation applications requiring uncompromising reliability, precision control, and system scalability. With its industrial-grade construction and advanced 32-bit RISC processor architecture, the CJ2M-CPU31 provides the processing power needed for complex automation tasks while maintaining Omron's legendary durability standards. The unit comes with a comprehensive 1-year manufacturer's warranty against defects in materials and workmanship.

Advanced Technical Features and Operational Benefits

• Ultra-High-Speed Processing Architecture: Features a 32-bit RISC processor capable of executing basic ladder logic instructions (LD, AND, OR) in just 20 nanoseconds, enabling real-time control for time-sensitive industrial automation processes.
• Expanded Memory Configuration: Equipped with 20 KB of non-volatile flash memory for program storage and 128 KB of battery-backed RAM for data handling, supporting complex control algorithms and extensive data logging requirements.
• Scalable I/O System: Modular design supports expansion up to 2,880 I/O points through CJ-series expansion units, making it suitable for both standalone applications and large-scale distributed control systems.
• Industrial Communication Capabilities: Integrated RS-232C port (programming/tool connection) and USB Type B port (programming interface) provide flexible connectivity options for system configuration and maintenance.
• Compact Industrial Form Factor: Space-efficient dimensions (31 × 90 × 65 mm) with DIN rail mounting capability (35 mm) and lightweight design (200 g) optimize panel space utilization in control cabinets.
• Energy Efficient Design: Low power consumption profile (0.75A @5V DC, 0.15A @24V DC) reduces operational costs while maintaining high performance levels.
• Rugged Industrial Construction: Engineered to withstand harsh industrial environments with vibration resistance (10-150 Hz) and shock tolerance (147 m/s²) for reliable operation in demanding conditions.
• Extended Temperature Operation: Maintains full operational capability across a wide temperature range from 0°C to 55°C (32°F to 131°F) with 10-90% relative humidity (non-condensing).
• Global Compliance: Certified to CE, UL, and cUL standards for international deployment in industrial automation applications.

Industrial Automation Applications

The Omron CJ2M-CPU31 PLC CPU unit is designed to excel in diverse industrial automation scenarios:

• Advanced Manufacturing Systems: Central control unit for automated production lines, robotic workcells, and precision assembly systems requiring high-speed logic processing.
• Machine Tool Control: Ideal for CNC equipment, special purpose machinery, and automated test systems demanding precise motion control and sequencing.
• Process Industry Automation: Reliable control solution for batch processing, continuous production monitoring, and quality control systems in chemical, pharmaceutical, and food processing applications.
• High-Speed Packaging Machinery: Provides the deterministic control required for complex packaging sequences, labeling systems, and product handling equipment.
• Material Handling Automation: Central control for conveyor systems, automated storage/retrieval systems (AS/RS), and sorting equipment in distribution centers and manufacturing facilities.
• Building Management Systems: Energy management and equipment control for HVAC systems, lighting networks, and facility automation in commercial and industrial buildings.
• Infrastructure Monitoring: Control and data acquisition for water treatment plants, power distribution systems, and other critical infrastructure applications.

Comprehensive Technical Specifications

Specification Category	Detailed Technical Parameters
Product Identification	Omron CJ2M-CPU31 (Genuine OEM Part Number)
Processing Architecture	32-bit RISC processor with optimized instruction set for industrial control
Execution Performance	20 ns for basic instructions (LD, AND, OR) 40 ns for MOV instructions 1.2 μs for floating point operations
Memory Configuration	20 KB program memory (non-volatile flash) 128 KB data memory (battery-backed RAM with CJ1W-BAT01)
I/O System Capacity	Maximum 2,880 points (with CJ-series expansion) 40 local I/O points (max. 960 with remote I/O)
Communication Interfaces	1 × RS-232C port (D-Sub 9-pin, programming/tool connection) 1 × USB Type B port (programming interface)
Physical Dimensions	31 mm (W) × 90 mm (H) × 65 mm (D) 1.22" (W) × 3.54" (H) × 2.56" (D)
Mounting Configuration	Standard 35 mm DIN rail mounting Panel mounting possible with optional hardware
Power Requirements	5 V DC: 0.75 A (internal bus power) 24 V DC: 0.15 A (external power)
Environmental Specifications	Operating Temperature: 0°C to 55°C (32°F to 131°F) Storage Temperature: -25°C to 65°C (-13°F to 149°F) Humidity Range: 10% to 90% RH (non-condensing)
Mechanical Durability	Vibration Resistance: 10-57 Hz at 0.075 mm amplitude 57-150 Hz at 9.8 m/s² acceleration Shock Resistance: 147 m/s² (3 shocks each in X, Y, Z axes)
Product Weight	200 g (0.44 lbs) excluding expansion units
Regulatory Compliance	CE Marked (EMC Directive, Low Voltage Directive) UL 508 (Industrial Control Equipment) cUL Listed (Canada)
Warranty Coverage	1-year limited manufacturer warranty against defects

System Integration and Compatibility

The CJ2M-CPU31 maintains full compatibility with Omron's comprehensive CJ-series automation components:

• I/O Expansion Modules: CJ1W digital I/O units (DC input, relay output, transistor output), analog I/O units (voltage/current input, analog output), and temperature control units (thermocouple, RTD input)
• Special Function Units: CJ1W high-speed counter modules (500 kHz), position control units, pulse I/O modules, and motion control options
• Communication Options: CJ1W Ethernet/IP units, DeviceNet masters/slaves, Profibus-DP masters, and serial communication modules
• Peripheral Devices:
• Human-Machine Interfaces: Compatible with Omron NA, NS, and NT series HMIs for comprehensive operator control and monitoring
• Programming Environment: Requires CX-Programmer software (sold separately) for ladder logic programming and system configuration

Note: This product is sold as a standalone unit and does not include technical support services. Proper installation and operation require appropriate technical knowledge of industrial control systems.