Keyence LR-ZB250AN Self-Contained CMOS Laser Sensor

The Keyence LR-ZB250AN is a high-performance distance-based laser sensor, designed for accurate detection and measurement in demanding industrial environments. With Class 1 laser safety certification, IP69K-rated stainless steel housing, and resistance to industrial cleaning agents, this sensor ensures durability, accuracy, and reliability in harsh environments.

Technical Specifications

Manufacturer: Keyence
Product Series: LR-Z Series
Model: LRZB250AN
Type: Distance-Based Laser Sensor
Appearance: Rectangular
Output Type: NPN
Cable Connection: 2 m Cable

Detection & Measurement

• Detectable Distance: 35 to 250 mm (1.38″ to 9.84″)
• Standard Detectable Deviation:
  • 35 to 180 mm: ±9 mm (0.35″)
  • 180 to 250 mm: ±25 mm (0.98″)
• Display Resolution: 1 to 3 mm (0.04″ to 0.12″)
• Spot Size: Approx. 2.4 × 1.2 mm at 250 mm

Response Time & Light Source

• Response Time Options:
  • 1.5 ms
  • 10 ms
  • 50 ms
• Light Source:
  • Type: Red Laser (660 nm)
  • Classification: Class 1 (IEC60825-1, FDA CDRH Part 1040.10)

Display & Indicators

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

Timer Functions:

• OFF
• ON Delay
• OFF Delay
• One-Shot

Power & Electrical Specifications

• Power Voltage: 10 to 30 VDC (≤10% ripple P-P, Class 2/LPS)
• Power Consumption: 450 mW or less
  • 18 mA max. @ 24 V
  • 34 mA max. @ 12 V

Control Output:

• NPN Open Collector
• Applied Voltage: 30 VDC Max
• Control Current: 100 mA Max
• Residual Voltage:
  • ≤1.2 V @ 10 mA or less
  • ≤2.0 V @ 10–100 mA

Output Operation: Light-ON / Dark-ON Selectable

External Input:

• Calibration Time: ≥35 ms (ON/OFF)
• Laser Stop Time: ≥2 ms (ON), ≥20 ms (OFF)
• Short-Circuit Current:
  • NPN: ≤1 mA
  • PNP: ≤2 mA

Protection & Environmental Resistance

• Built-In Protection:
  • Reverse Power Connection
  • Output Overcurrent
  • Output Surge
  • Reverse Output Connection
• Enclosure Rating:
  • IP68 / IP69K (IEC60529 / DIN40050-9)
  • NEMA 4X, 6P, 13
  • ECOLAB & Diversey Agent Certified
• Ambient Light Resistance:
  • Incandescent: 2,000 lux Max
  • Sunlight: 4,000 lux Max
• Operating Temperature: -10°C to +50°C
• Storage Temperature: -25°C to +75°C
• Relative Humidity: 35% to 85% RH
• Insulation Resistance: ≥20 MΩ @ 500 VDC
• Withstand Voltage: 1,000 VAC (1 min, 50/60 Hz)
• Vibration Resistance: 10–55 Hz, 1.5 mm amplitude, 2 hrs per axis
• Shock Resistance: 1,000 m/s², 6 times per axis

Material & Construction

• Case: SUS316L Stainless Steel
• Display: PES
• Lens Cover: PMMA (Scratch-Resistant Coating)
• Packing / Connector Ring: FKM
• Weight: Approx. 110 g (Including Cable)

Included Accessories

• Instruction Manual
• Certification / FDA Label

Key Features & Benefits

✅ Long-Range Detection: Accurately detects objects from 35 to 250 mm.

✅ Durable Stainless Steel Housing: SUS316L construction ensures maximum resistance to corrosion and cleaning agents.

✅ Advanced Laser Technology: Class 1 red laser (660 nm) provides precise and stable detection.

✅ Fast Response Time: Adjustable settings from 1.5 ms to 50 ms for high-speed applications.

✅ Industrial-Grade Environmental Resistance: IP68/IP69K-certified for waterproof and dustproof protection in extreme conditions.

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