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CS1W-CT021

Omron CS1W-CT021 High-Speed Counter Unit

SKU: CS1W-CT021

USD 466.00

Omron CS1W-CT021 is a high-speed counter unit for CS1 series PLCs, enabling high-frequency pulse counting.

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Product Overview

CS1W-CT021 is part of Omron CS1W special-function unit lineup and is used when automation systems require high-speed pulse counting beyond standard digital input capabilities. Typical use cases include encoder pulse counting, positioning feedback events, speed-related monitoring, and precise event accumulation in machine operations. This unit is often selected in packaging, material handling, and process equipment where fast, deterministic pulse acquisition is essential to control quality and throughput. During engineering, teams should validate signal levels, pulse frequency, channel assignment, filtering strategy, and synchronization with PLC scan logic. Correct shielding and grounding practices are also important for noise immunity in high-speed input circuits. CS1W-CT021 is generally deployed where modular PLC platforms must handle fast pulse-domain tasks with maintainable cabinet integration.

  • SKU: CS1W-CT021
  • Series: CS1W

Best-Fit Applications

  • Encoder pulse counting for machine position tracking
  • Speed and throughput event monitoring in conveyors
  • Cut-to-length and indexing count supervision
  • Process pulse accumulation in production equipment
  • High-speed trigger counting where standard inputs are insufficient
  • Retrofit upgrade for legacy pulse acquisition limitations

Buying Checklist

  • Validate expected pulse frequency against counter unit capability.
  • Confirm encoder signal type and electrical interface compatibility.
  • Design shielded wiring and grounding to reduce noise-induced errors.
  • Plan PLC data handling and scaling strategy for counted values.
  • Include commissioning tests for rollover, reset, and event integrity.

Technical Specifications

Model CS1W-CT021
Series CS1W
Type High-Speed Counter Unit
Counter Channels 2 channels
Max Frequency 500kHz
Input Type Line driver, open collector
Compatible CPUs CS1 series
Operating Temperature 0 to +55°C
Mounting CS1 backplane

FAQ for CS1W-CT021

What's the maximum count frequency?
500kHz per channel. Suitable for high-speed encoder feedback.
How many channels does this unit have?
2 independent counter channels. Each channel configurable independently.
What encoder types are compatible?
Line driver (RS-422) or open collector encoders. Check encoder output type.
Do I need to configure this unit?
Yes, configure in CX-Programmer. Set count mode, preset value, comparison values.

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