High-Speed Counter Unit CJ1W-CT021 for Precise Motion Control

Product Overview

The Omron CJ1W-CT021 is a high-performance, industrial-grade counter module designed for precision counting, speed measurement, and position control applications. As part of Omron's renowned CJ Series Programmable Controller family, this module delivers exceptional reliability in demanding automation environments. Engineered for high-speed operation, the CJ1W-CT021 excels in applications requiring accurate pulse counting, encoder signal processing, and real-time monitoring of fast-moving processes. Its robust construction ensures stable performance even in harsh industrial conditions, making it ideal for integration into production lines, packaging systems, and motion control setups.

Key Features and Benefits

• Dual-Channel High-Speed Counting: Features 2 independent input channels supporting both differential (500 kHz max) and single-ended (200 kHz max) configurations for versatile application support
• Advanced Signal Processing: Precisely handles incremental encoder signals including A-phase, B-phase, and Z-phase inputs for comprehensive motion tracking
• Industrial-Grade Reliability: Built with Omron's quality standards, featuring photocoupler isolation between inputs and internal circuits for enhanced noise immunity
• Compact Form Factor: Space-saving design (31 × 90 × 65 mm) allows easy integration into control panels and PLC racks
• Low Power Consumption: Operates efficiently with just 0.25 A at 5 V DC, reducing overall system power requirements
• Precision Engineering: High-accuracy counting capability ensures reliable data for critical control applications
• Standard Warranty: Backed by Omron's 1-year manufacturer warranty for peace of mind

Industrial Applications

• Production Line Monitoring: High-speed counting for parts, products, or events in manufacturing processes
• Motion Control Systems: Precise position and speed measurement in servo and stepper motor applications
• Packaging Machinery: Accurate length measurement and product counting for packaging automation
• Material Handling: Speed monitoring and position feedback for conveyor systems and automated guided vehicles
• Rotary Equipment: RPM measurement and angular position detection in rotating machinery
• Quality Inspection: Event counting and timing for product verification systems

Detailed Technical Specifications

Parameter	Specification
Model Number	CJ1W-CT021 (verified Omron part number)
Input Channels	2 independent channels
Maximum Counting Speed	500 kHz (differential input), 200 kHz (single-ended input)
Supported Signal Types	Incremental encoder signals (A-phase, B-phase, Z-phase), pulse inputs
Input Voltage Range	5 V DC (differential), 12-24 V DC (single-ended)
Power Requirements	5 V DC, 0.25 A (typical)
Isolation Method	Photocoupler isolation between inputs and internal circuits
Environmental Rating	Industrial operating temperature range (0-55°C)
Physical Dimensions	31 mm (W) × 90 mm (H) × 65 mm (D)
Weight	Approximately 200 grams
Mounting	CJ Series backplane compatible
Warranty Period	1 year manufacturer warranty

Integration and Compatibility

The CJ1W-CT021 module is designed for seamless integration with Omron CJ Series Programmable Controllers, providing a complete automation solution. Its standardized form factor ensures easy installation in existing CJ Series racks, while the high-speed counting capability complements Omron's comprehensive industrial automation ecosystem. The module's flexible input configuration allows adaptation to various sensor and encoder types commonly used in industrial settings.

Quality Assurance

As with all Omron industrial components, the CJ1W-CT021 is manufactured under strict quality control standards to ensure reliable operation in continuous industrial use. The product undergoes rigorous testing to meet Omron's performance specifications and industry standards for industrial automation equipment.