Overview
The Sick WT12-2B523 photoelectric proximity sensor is an energetic-type optical sensor engineered for industrial automation, packaging, and motion control systems. This model uses visible red LED light and background suppression to detect objects reliably across 80–800 mm sensing ranges, making it suitable for a broad range of detection tasks from conveyor monitoring to positioning applications.
Key Features
- Energetic photoelectric detection with background suppression technology
- Visible red LED light source with potentiometer-based adjustment
- Fast 330 µs response time for high-speed applications
- Robust metal zinc diecast housing with IP67 environmental rating
- Wide voltage range: 10–30 V DC operation
- M12 4-pin connector for quick installation and replacement
Technical Specifications
- Sensor Type: Photoelectric Proximity Sensor, Energetic
- Detection Principle: Background Suppression
- Light Source: LED, Visible Red
- Sensing Range (max): 80–800 mm
- Supply Voltage: 10–30 V DC
- Switching Output: Configurable (check model suffix for PNP/NPN)
- Response Time: 330 µs
- Housing Dimensions (W × H × D): 15 mm × 49 mm × 41.5 mm
- Housing Material: Metal, Zinc Diecast
- Optics: Plastic (PMMA)
- Connection Type: M12 4-pin Male Connector
- Enclosure Rating: IP67
- Operating Temperature: –40 °C to +60 °C
- Storage Temperature: –40 °C to +75 °C
- Certifications: UL Listed
Typical Applications
- Conveyor belt presence detection and product counting
- Packaging machinery object positioning
- Motion control and limit switching
- Assembly line automation and parts verification
- Industrial automation systems requiring reliable background suppression
Compatibility & Replacements
Compatible With
- Standard 10–30 V DC industrial control systems
- PLC and motion control modules with M12 connector inputs
- Automation equipment requiring energetic photoelectric detection
- Systems using LED-based optical sensing with background suppression
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The WT12-2B523 is part of Sick’s WT12 series; related models include WT12-2P410, WT12-2P440, and WT12-2P450, though direct interchangeability depends on specific output type (PNP/NPN) and connector configuration.
Works With
- Industrial control systems with M12 4-pin sensor connectors
- PLC input modules (Allen-Bradley, Siemens, Mitsubishi, Omron)
- Pneumatic and hydraulic automation systems with 24 V DC logic
- Motion controllers and drives with discrete input capabilities
- Standard industrial 24 V DC control voltage supplies
