Key Specifications

• Manufacturer: Banner Engineering
• Model: Q4XTBLAF300-Q8
• Sensor Type: Laser Distance Sensor with Background Suppression
• Sensing Range: 25 mm to 300 mm
• Outputs: The sensor features dual (bipolar) discrete outputs that can operate as either NPN or PNP. The specific function is typically configured via buttons on the sensor or through IO-Link.
• Operating Voltage: 10 V to 30 V DC
• Connection: 5-pin M12 Quick-Disconnect Connector
• Laser Type: Class 1 Visible Red Laser
• Key Features: It has a highly durable IP69K-rated stainless steel housing, a clear digital display for distance readout, and easy setup via push buttons.

## Wiring & Pinout

The wiring for the 5-pin M12 connector is printed directly on the sensor’s label:

• Pin 1 (BRN – Brown): Power Supply (10-30 V DC)
• Pin 2 (WHT – White): Output 2 (NPN)
• Pin 3 (BLU – Blue): Ground (0V)
• Pin 4 (BLK – Black): Output 1 (PNP)
• Pin 5 (GRY – Grey): Input (Remote Teach)

## Functionality

This sensor uses a laser to measure the precise distance to a target object. The “background suppression” feature means it can be set to detect an object at a specific distance (up to 300 mm) while reliably ignoring any other objects or surfaces in the background, even if they are more reflective. This makes it ideal for tasks like checking for the presence of parts, controlling fill levels, or verifying product assembly.

BANNER SM312W QD Photoelectric Sensor