Keyence LR-W70C Self-Contained Full-Spectrum Sensor

The Keyence LR-W70C is a compact dual-spot full-spectrum sensor, purpose-built for object detection, position verification, and contrast recognition in harsh industrial environments. With fast response times down to 200 µs, selectable NPN/PNP output, and IO-Link v1.1 communication, it delivers robust and flexible sensing performance. Housed in a zinc die-cast body with IP65/IP67 protection, the LR-W70C is ideal for automation systems in robotics, packaging, food, and automotive sectors.

Technical Specifications

Manufacturer: Keyence
Series: LR-W Series
Model: LRW70C
Type: Full-Spectrum Dual-Spot Sensor
Connector Type: M12, 4-pin
Detection Distance: 30 to 70 mm
Minimum Spot Diameter: Approx. 1.6 × 2.9 mm (at 50 mm)

Light Source & Detection Features

Light Source: White LED
Mutual Interference Prevention: Up to 2 units (via frequency switching)

Response Time & Timer Functions

Selectable Response Time:
• 1-Spot Mode: 200 µs / 1 ms / 10 ms / 100 ms / 500 ms
• 2-Spot Mode (Difference): 500 µs to 999 ms
• 2-Spot Mode (Matching): 400 µs to 999 ms

Timer Modes:
• OFF
• ON Delay
• OFF Delay
• One-Shot

I/O & Control Output

Output Type: NPN or PNP Open Collector (Selectable)
Rated Voltage: 30 VDC max.
Current Capacity: 50 mA max.
Residual Voltage: 2 V or less
Output Logic: N.O. / N.C. selectable

External Input Functions:
• Tuning / Laser OFF (Selectable)
• Short-Circuit Current:
• NPN: 1 mA or less
• PNP: 2 mA or less

IO-Link Support:
• Specification: v1.1
• Communication Mode: COM2 (38.4 kbps)

Power & Protection

Power Supply: 10–30 VDC (±10% Ripple, Class 2 or LPS)
Current Draw (No Load):
• 60 mA at 24 VDC
• 110 mA at 12 VDC
• 180 mA at 10 VDC (With load)

Protection Circuits:
• Reverse polarity
• Surge protection
• Overcurrent protection
• Output reversal protection

Environmental Resistance

IP Rating: IP65 / IP67 (IEC60529)
Ambient Light Immunity:
• Incandescent: 10,000 lx
• Sunlight: 20,000 lx

Operating Temp: -20°C to +50°C (No freezing)
Relative Humidity: 35%–85% RH (No condensation)
Vibration Resistance: 10–55 Hz, 1.5 mm double amplitude, 2 hrs per axis
Shock Resistance: 1,000 m/s² (100G), 6 shocks per axis

Material & Construction

• Case: Zinc die-cast (Nickel chrome plated)
• Lens Cover & Display: PMMA (Scratch-resistant)
• Indicator Cover: PPSU
• Buttons: PES
• Connector Ring: PMP
• Socket: PEI
• Weight: Approx. 75 g

Included Accessories

• Instruction Manual
• FDA Certification Label

Key Features & Benefits

✅ Dual Spot Detection. Improves precision by comparing two measurement points.

✅ Versatile Full-Spectrum Sensing. Stable performance across surfaces and colours.

✅ Ultra-Fast Response Time. Down to 200 µs for dynamic applications.

✅ IO-Link Enabled. Remote configuration, monitoring, and diagnostics ready.

✅ IP65/IP67-Rated. Built for dusty, wet, and washdown environments.

✅ Rugged Zinc Housing. Designed for long-lasting use in automation systems.

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