Key Parameters
Parameter Specification
Product Type Background Suppression (BGS) Distance Sensor
Order Code WTB27-3F2611
Sensing Principle Background Suppression (BGS)
Sensing Range 50 mm to 270 mm
Light Source Laser, visible red (Class 2, 650 nm)
Spot Size ≈ 2.5 x 2.5 mm (at 270 mm)
Resolution < 0.2 mm
Linearity Error ± 0.5 mm
Outputs Dual Outputs:
• 1x Programmable PNP (NO/NC)
• 1x IO-Link (SIO mode supported)
Communication IO-Link V1.1
Supply Voltage 10 - 30 V DC
Current Consumption max. 150 mA (without load)
Switching Frequency 1 kHz (1000 Hz)
Connection Type M12, 5-pin connector
Housing Material Stainless Steel (V4A / 316L)
Protection Rating IP67, IP69K
Indicator LEDs RGB LED for multi-color status and diagnostic indication
Operating Temperature -30 °C to +60 °C
Approvals / Certifications CE, cULus, FDA CFR 21, EHEDG, IECEx, ATEX
Functional Features
Precise Distance Measurement: Provides highly accurate and repeatable distance measurements thanks to laser-based BGS technology.

IO-Link Smart Sensor: Enables remote configuration, detailed diagnostics (e.g., signal quality, temperature, operating hours), and continuous analog value output over a digital communication line.

Extreme Ruggedness: The stainless steel housing and IP69K rating make it impervious to harsh chemicals, high-pressure cleaning, and extreme temperatures.

Programmable Switching Output: The PNP output can be configured for various functions (e.g., window mode, hysteresis) and logic (NO/NC) via the teach-in button or IO-Link.

Easy Setup: Features a teach-in button for simple, push-button configuration of switching points.

Advanced Diagnostics: The RGB LED provides clear visual feedback on operating status, warnings, and errors.

Typical Applications
Robotics: Precise bin picking and part positioning.

Packaging: Checking fill levels, counting stacked items, and monitoring flap positions.

Food & Beverage: Hygienic applications requiring high-pressure washdown, such as verifying the position of containers, lids, or products on conveyors.

Automated Guided Vehicles (AGVs): Distance keeping and obstacle detection.

Machine Building: Checking the presence and precise position of tools, parts, or actuators in harsh conditions.