Keyence LR-ZB250CN Self-Contained CMOS Laser Sensor

High-precision stainless steel laser sensor with 35–250 mm detection range, NPN output, IP68/IP69K rating, and selectable timing modes for harsh industrial environments. The Keyence LR-ZB250CN is a robust, stainless steel distance-based laser sensor engineered for demanding detection applications across food, packaging, automotive, and metal industries. With a compact body, a red Class 1 laser, and precision distance feedback over a 35 to 250 mm range, it delivers stable detection performance even on challenging surfaces. Its IP68/IP69K rating, rapid response time, and user-selectable I/O make it a dependable solution for harsh factory settings.

Technical Specifications

Model: LRZB250CN
Type: Distance-Based Laser Sensor (CMOS)
Output Type: NPN Open Collector
Connection: M8 4-pin Connector

Optical & Detection Specifications

• Detection Range: 35 to 250 mm (1.38″ to 9.84″)
• Accuracy (35–180 mm): ±9 mm (0.35″)
• Accuracy (180–250 mm): ±25 mm (0.98″)
• Display Resolution: 1 to 3 mm (0.04″ to 0.12″)
• Spot Size at Max Range: Approx. 2.4 × 1.2 mm (0.09″ × 0.05″)
• Light Source: Red Laser (660 nm), Class 1 (IEC60825-1, FDA)

Display & Indicators

• Display: 3-Digit Red 7-Segment
• Indicators:
  • Output (Yellow)
  • DATUM (Orange)
  • 1-Spot (Green)

Timer & Response Time

• Selectable Response Time: 1.5 ms / 10 ms / 50 ms
• Timer Modes: OFF Delay, ON Delay, One-Shot

I/O & Output Options

Control Output:

• NPN Open Collector
• 30 VDC Max, 100 mA Max
• Residual Voltage:
  • 1.2 V or Less (≤10 mA)
  • 2 V or Less (10–100 mA)
• Output Operation: Light-ON / Dark-ON Selectable

External Input:

• Input Time Calibration: 35 ms ON, 35 ms OFF
• Laser Emission Stop: 2 ms ON, 20 ms OFF
• Short-Circuit Current: 1 mA Max (NPN)

Built-in Protection:

• Reverse Power Protection
• Output Overcurrent Protection
• Output Surge Protection
• Reverse Output Protection

Power & Electrical Specifications

• Voltage Supply: 10 to 30 VDC ±10% ripple (Class 2 or LPS)
• Power Consumption:
  • 450 mW Max
  • 18 mA (24 V)
  • 34 mA (12 V)

Environmental Resistance

• Enclosure Rating:
  • IP68 / IP69K (IEC60529 / DIN40050-9)
  • NEMA 4X, 6P, 13 (NEMA250)
  • ECOLAB / Diversey Certified
• Ambient Temperature: -10°C to +50°C (No Freezing)
• Humidity: 35% to 85% RH (No Condensation)
• Light Resistance:
  • Incandescent: 2,000 lux
  • Sunlight: 4,000 lux
• Storage Temp: -25°C to +75°C
• Withstand Voltage: 1,000 VAC, 1 min
• Vibration Resistance: 10–55 Hz, 1.5 mm Amplitude, 2 hr Each Axis
• Shock Resistance: 1,000 m/s², 6 Times Each Axis

Material & Construction

• Housing: SUS316L Stainless Steel
• Display: PES
• Lens Cover: PMMA (Anti-Scratch Coating)
• Seal/Connector Ring: FKM
• Weight: Approx. 55 g
• Included Items: Instruction Manual, FDA Compliance Label

Key Features & Benefits

✅ 250 mm Detection Range: Fast, precise measurement with ±25 mm accuracy.

✅ Rugged Build: SUS316L body, PMMA lens, and IP69K for washdown environments.

✅ Smart I/O: NPN output with timer control and emission stop functionality.

✅ Simple Setup: Bright display, indicators, and calibration functions.

✅ Versatile Mounting: M8 4-pin connector for fast integration.

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