Keyence CZ-V21A Digital RGB Sensor

The Keyence CZ-V21A is a high-speed, high-precision digital colour sensor amplifier with NPN open-collector outputs and selectable response times down to 200 µs. Designed to detect subtle colour differences and control multiple outputs simultaneously, it supports expansion up to 4 units total and integrates easily into industrial automation systems. With flexible input modes, timer settings, and compact polycarbonate housing, the CZ-V21A excels in sorting, inspection, and quality control applications across diverse industries.

Technical Specifications

Model: CZV21A
Type: Digital Colour Sensor Amplifier
Output Type: NPN
Unit Type: Main Unit
Expansion: Supports up to 3 additional units (Max 4 units)

Performance & Response Time

• Selectable Modes:
  • HIGH SPEED: 200 µs
  • FINE: 1 ms
  • TURBO: 4 ms
  • SUPER: 8 ms

I/O & Control Output

• Control Outputs: 4x NPN Open-Collector
• Max Voltage: 40 VDC
• Output Current:
  • 100 mA max per channel
  • 200 mA total for all 4 outputs
• Residual Voltage: 1.0 V max (when multiple units are connected)
• Protection Features:
  • Reverse Polarity Protection
  • Overcurrent Protection
  • Surge Absorber
• External Inputs:
  • External Tuning
  • Bank Switching (C/C+I Mode)
  • Shift Input (Super I Mode)
  • Minimum Input Time: 20 ms

Timer Function & Expansion

• Timer Modes: OFF, OFF-Delay, ON-Delay, One-Shot
• Adjustable Duration: 1 to 1000 ms per bank
• Interference Prevention:
  • HIGH SPEED: 0 units
  • FINE/TURBO/SUPER: Up to 2 units
• Max Configuration: 1 main unit + 3 expansion units

Power & Environmental Specifications

• Power Supply: 24 VDC (Ripple P-P ≤ 10%)
• Power Consumption:
  • Normal: 1.5 W (62.5 mA)
  • Eco Mode: 1.0 W (42.0 mA)
• Operating Temperature:
  • -10°C to +55°C (1–2 units)
  • -10°C to +50°C (3 units)
  • -10°C to +45°C (4 units)
• Vibration Resistance:
  • 10–55 Hz, 1.5 mm double amplitude
  • 2 hours in X, Y, Z axes

Material & Construction

• Housing: Polycarbonate
• Weight: Approx. 110 g
• Accessories Included: Mounting Fittings

Key Features & Benefits

✅ Ultra-Fast Detection: Response time as low as 200 µs for high-speed automation.

✅ Four NPN Control Outputs: Supports advanced sorting or multi-target applications.

✅ Expandable Configuration: Connect up to 3 expansion units for distributed sensing.

✅ High-Precision RGB Detection: Accurately differentiates colours, textures, and surfaces.

✅ Durable Design: Polycarbonate housing built for demanding industrial use.

✅ Flexible Timing Control: Timer functions with digital setup per output bank.

📦 Order Today for Fast UK & Europe Delivery!

At Drive Outlet Megastore, we offer the best Keyence CZ-V21A prices, with same-day and next-day shipping across the UK & Europe.

For more information about the Keyence CZ-V21A, or help selecting the right digital colour sensor for your production line, reach out to Drive Outlet Megastore.

Our technical specialists are ready to assist with expert product guidance and ensure seamless integration into your inspection or automation system.