SICK WL12L-2B520 Photoelectric Sensor (1018253)

The SICK WL12L-2B520 is a highly reliable photoelectric retro-reflective sensor featuring advanced background suppression and rugged construction for industrial automation environments. Engineered for demanding detection tasks over longer distances, the WL12L-2B520 offers precise and fast switching, even in tough working conditions.

Technical Specifications

Model: WL12L-2B520
Part Number: WL12L-2B520
Product Type: Retro-Reflective Photoelectric Sensor
Sensing Principle: Retro-reflective with polarisation filter
Light Source: Visible red light (LED)
Sensing Range: Up to 7 m (with recommended reflector)
Adjustment: Potentiometer, 5-turns
Output Type: NPN, Light/dark switching
Switching Frequency: 1,000 Hz
Response Time: 500 µs
Hysteresis: 3% to 15% of sensing range

Electrical Interface

Supply Voltage: 10 V DC to 30 V DC (Ripple ±10 %)
Power Consumption: ≤ 30 mA
Switching Output: NPN, short-circuit protected
Connection Type: 4-pin, M12 connector
Signal Type: Switching output (binary)
Protection Class: III (EN 61140)

Mechanical Data

Enclosure Rating: IP67, IP69K (according to IEC 60529 and DIN 40050)
Housing Material: ABS plastic, highly durable
Lens Material: PMMA (acrylic glass)
Dimensions (W x H x D): 15 mm x 49 mm x 41.5 mm
Weight: Approx. 100 g
Mounting: Through-hole mounting with M3 screws

Safety-Related Data

Short-Circuit Protection: Yes
Overvoltage Protection: Yes
Reverse Polarity Protection: Yes
EMC Compliance: EN 60947-5-2

Ambient Conditions

Operating Temperature: -25 °C to +55 °C (-13 °F to 131 °F)
Storage Temperature: -40 °C to +75 °C (-40 °F to 167 °F)
Ambient Light Immunity: 5,000 Lux (incandescent light)
Vibration Resistance: 10 g (10 Hz to 55 Hz, IEC 60068-2-6)
Shock Resistance: 30 g (11 ms, IEC 60068-2-27)

Certificates and Compliance

• European Conformity (CE)
• United Kingdom Conformity Assessed (UKCA)
• cULus Listed (UL 508)
• RoHS Compliance

Key Features & Benefits

✅ Long Sensing Distance: Up to 7 meters with reliable polarization-based detection.

✅ Fast Switching Performance: 1,000 Hz switching frequency for dynamic applications.

✅ Superior Ambient Light Immunity: Stable operation even under bright light conditions.

✅ Compact and Rugged Housing: Slim design with IP67/IP69K ratings for wet and dusty environments.

✅ User-Friendly Setup: 5-turn potentiometer for fine-tuning sensing range easily.

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