Omron High-Speed Counter Units CJ1W-CT021 CJ1WCT021

Description:

The Omron CJ1W-CT021 high-speed counter unit is used in CJ1-series PLC systems to process high-frequency pulse signals for precise counting and position tracking in industrial automation equipment. Commonly installed in conveyor systems, packaging machines, motion control applications, and automated assembly lines requiring accurate high-speed counting and encoder feedback. Maintenance teams and system integrators use this part for replacement, system expansion, and maintaining precise counting performance in PLC-based systems.

Applications:

The Omron CJ1W-CT021 high-speed counter unit is used in industrial environments where accurate pulse counting and position tracking are essential. It is applied in encoder-based positioning systems, conveyor synchronization, packaging machinery, and automated inspection systems to monitor speed, position, and quantity, ensuring precise and reliable PLC-controlled operations.

Technical Specifications:

• Manufacturer: Omron
• Part Number: CJ1W-CT021
• Product Type: High-Speed Counter Unit
• Series: Omron CJ1 Series
• Number of Channels: 2 high-speed counter channels
• Input Type: Pulse input (incremental encoder compatible)
• Counting Speed: High-speed counting capability (up to several hundred kHz)
• Input Signal Type: Differential line driver / open collector (model dependent)
• Functions: Up/down counting, frequency measurement, position control
• Connection Type: Screw terminal
• Mounting Type: Rack mount (CJ1 PLC rack)
• Isolation: Electrical isolation between input and PLC
• Operating Temperature: 0°C to +55°C

Common Replacements:

• Omron CJ1W-CT041 High-Speed Counter Unit
• Omron CJ1W-CT021-V1 Counter Unit
• Omron NX-CT2605 High-Speed Counter Module