Overview
The Sick WT18-3P420S32 is a photoelectric proximity sensor from Sick’s W18-3 series, designed for reliable object detection in demanding industrial applications. Built with background suppression technology, this sensor eliminates false triggers from reflective backgrounds and ambient light interference, making it ideal for demanding manufacturing and automation environments.
Key Features
- Background Suppression: High-precision background suppression eliminates false triggers from reflections and ambient light
- PNP Output: Reliable NPN/PNP switching for seamless integration into control systems
- M12 Male Connector: 4-pin M12 connector for secure, standardized industrial connections
- LED Technology: 870nm infrared LED light source for consistent, long-range detection
- IP67 Rating: Dust and water-tight housing for harsh manufacturing environments
- Sensing Range: Fixed 50–1000mm sensing range, optimized for medium to long-distance detection
Technical Specifications
- Supply Voltage: 10–30V DC
- Output Type: PNP
- Sensing Range: 50–1000mm
- Switching Mode: Light switching
- Connection: M12, 4-pin male connector
- Light Source: Infrared LED, 870nm wavelength
- Protection Rating: IP67
- Material: Plastic housing
Typical Applications
- Automated packaging and labeling systems
- Conveyor belt object detection and sorting
- Assembly line part presence verification
- Container and bottle detection in food and beverage lines
- Pick-and-place robotic applications
- Material handling and warehouse automation
Compatibility & Replacements
Compatible With
- PLC systems (Allen-Bradley, Siemens, Mitsubishi, Omron) with M12 or equivalent I/O modules
- Industrial control panels and automation controllers
- IO-Link compatible systems (future-ready architecture)
- Sick sensor networks and gateway products
Replaces / Drop-In Replacement For
- Sick WT18-3P420S25 (50–850mm range variant)
- Sick WT18-3P420S22 (10–1000mm range with potentiometer adjustment)
- Other Sick W18-3 series background suppression sensors with fixed-range configurations
Works With
- Sick IO-Link communication standard
- M12 A-coded connector systems
- Industrial automation platforms supporting 10–30V DC sensors
- Teach-in configuration via external pushbutton (sensor configuration capability)
