Keyence LV-21AP Digital Laser Sensor

The Keyence LV-21AP is a high-speed digital laser sensor amplifier, engineered for precision object detection in industrial automation systems. With dual PNP outputs, 80 µs response time, and support for up to 7 expansion units, this compact unit provides versatile and reliable sensing performance in demanding production environments.

Technical Specifications

Manufacturer: Keyence
Product Series: LV Series
Model: LV21AP
Type: Digital Laser Sensor Amplifier
Output Type: PNP Open Collector (2 Channels)

Control Output

• Voltage: 30 VDC Max
• Current: 100 mA Max
• Residual Voltage: ≤ 1.0 V

Response Speed & Interference Prevention

Response Modes:

• FINE: 80 µs
• TURBO: 500 µs
• SUPER/TURBO: 4 ms

Interference Prevention:

• FINE Mode: Not Supported
• TURBO Mode: Up to 2 Units
• SUPER Mode: Up to 4 Units

Expansion & Protection Features

• Unit Expansion: Up to 7 additional expansion units (8 total with main unit)
• Built-In Protection:
  • Reverse Polarity Protection
  • Overcurrent Protection
  • Surge Absorber

Power Supply & Consumption

• Power Voltage: 12 to 24 VDC (Ripple P-P ≤ 10%)
• Power Consumption:
  • 125 mA Max @ 12 V
  • 62.5 mA Max @ 24 V (1.5 W Max)

Environmental Resistance

• Operating Temperature:
  • -10°C to +55°C (1 unit)
  • -10°C to +50°C (2–5 units)
  • -10°C to +45°C (6–7 units)
• Relative Humidity: 35% to 85% RH (No Condensation)

Material & Construction

• Main Unit / Case Material: Polycarbonate
• Weight: Approx. 75 g

Key Features & Benefits

✅ Fast Response Time: 80 µs in FINE mode for high-speed detection applications.

✅ Dual Output Channels: Two PNP open-collector outputs for flexible integration.

✅ Robust Interference Prevention: Supports up to 4 units in SUPER mode.

✅ Expandable System: Connect up to 7 additional expansion units for large-scale setups.

✅ Durable & Compact Design: Polycarbonate housing ensures industrial-grade reliability.

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