CJ1W-II101 High-Speed Digital Input Unit for Industrial Automation

Product Overview

The Omron CJ1W-II101 is a high-performance, high-density digital input unit designed for industrial automation systems within the CJ Series programmable controller family. This 16-point DC input module delivers reliable signal processing for demanding machine control and industrial monitoring applications. Engineered for precision and durability, the CJ1W-II101 features photocoupler isolation and fast response times, making it ideal for integration into complex automation environments where signal integrity and responsiveness are critical.

Key Features and Benefits

• 16-Point High-Density Design: Compact footprint (31×90×65mm) maximizes control cabinet space efficiency while providing 16 discrete inputs per module.
• Versatile Input Configuration: Supports both sinking and sourcing 24V DC inputs (19.2-28.8V range) for flexible system integration.
• Fast Response Times: 1ms ON→OFF and 1.5ms OFF→ON switching ensures precise timing control for high-speed applications.
• Robust Isolation: Photocoupler isolation between field inputs and internal circuits provides superior noise immunity and protection.
• Low Power Consumption: Maximum 0.5W power draw reduces overall system energy requirements.
• Maintenance-Friendly Design: Removable screw terminal block simplifies wiring and field service operations.
• Industrial-Grade Construction: 200g rugged design withstands harsh industrial environments (0-55°C operating temperature).
• Standard Warranty: Backed by Omron's 1-year manufacturer warranty for guaranteed performance and reliability.

Industrial Applications

The CJ1W-II101 digital input module is engineered for diverse automation applications including:

• Machine Control Systems: Reliable input processing for CNC machines, injection molding equipment, and robotic cells.
• Process Automation: Precise signal acquisition for chemical processing, water treatment, and food production systems.
• Packaging Machinery: High-speed input monitoring for filling, labeling, and sealing equipment.
• Material Handling: Robust signal processing for conveyor systems, automated storage, and retrieval systems.
• Assembly Line Automation: Discrete input monitoring for automotive and electronics manufacturing processes.

Detailed Technical Specifications

Parameter	Specification
Model Number	CJ1W-II101 (verified Omron part number)
Input Type	Digital (24V DC sinking/sourcing)
Number of Inputs	16 points (individually isolated)
Input Voltage Range	19.2-28.8V DC (24V nominal)
Input Current	7mA typical per point
ON State Threshold	≥17V DC / ≥3mA
OFF State Threshold	≤5V DC / ≤1mA
Response Characteristics	1ms (ON→OFF), 1.5ms (OFF→ON)
Isolation Method	Photocoupler isolation (input to internal circuit)
Power Consumption	0.5W maximum (5V internal supply)
Terminal Configuration	Removable screw terminal block (18-point)
Physical Dimensions	31mm (W) × 90mm (H) × 65mm (D)
Module Weight	200g (excluding terminal block)
Operating Temperature	0 to 55°C (32 to 131°F)
Storage Temperature	-25 to 75°C (-13 to 167°F)
Relative Humidity	25% to 85% (non-condensing)
Vibration Resistance	10-57Hz, 0.075mm amplitude (conforms to IEC 61131-2)
Shock Resistance	147m/s², 3 times each direction (conforms to IEC 61131-2)

System Integration

The CJ1W-II101 module is designed for seamless integration with Omron CJ Series programmable controllers, including CJ1, CJ1G, CJ1H, and CJ1M CPU units. The compact form factor allows high-density mounting in control panels, with a single backplane supporting multiple I/O modules for scalable system expansion.

Compliance and Certifications

This product complies with international standards including:

• CE Marking (EMC Directive)
• UL Standards (UL508)
• IEC 61131-2 (Programmable Controllers)