Pepperl+Fuchs RL28-8-H-1500-LAS/105/110

Technical Specifications

1. Sensing Principle: Diffuse reflection background suppression (BGS)
2. Detection Range: Adjustable 50mm ~ 1500mm; background suppression offset +10% of maximum sensing distance
3. Light Source: 650nm visible red laser, Laser Class 1 (eye-safe without protective measures)
4. Beam Divergence: 1.5mrad ultra-narrow laser beam, accurate detection of tiny objects
5. Electrical Parameters: Operating voltage 10–30VDC, PNP transistor output, max load current 200mA
6. Response Time: 3.5ms fast switching response
7. Connection Interface: 5-pin M12 circular plug connector
8. Protection Grade: IP67, resistant to water splash, dust ingress
9. Operating Temperature: -10℃ ~ +50℃
10. Housing Material: ABS engineering plastic block housing

Functional Features

1. Ultra-narrow Class 1 laser beam, detects small parts, thin labels, tiny metal workpieces that standard infrared photoelectric sensors cannot identify
2. Background suppression technology: Automatically ignore reflective background surfaces (conveyor metal frames, packaging cartons, metal machine walls), no false triggering from background reflections
3. Adjustable sensing distance via built-in potentiometer, flexible adaptation to different production station installation distances
4. Dual high-brightness LED status indicators visible from long distance: power supply green LED, switch output yellow LED
5. Complete circuit protection: reverse polarity protection, short-circuit protection, overload protection for output transistor
6. Two mounting options: through-hole fixed mounting or dovetail groove slide rail mounting, flexible installation on machine brackets

Working Principle

Structure & Material

1. Main Housing: High-strength ABS impact-resistant plastic, rectangular block form factor
2. Optical Window: Scratch-resistant transparent polycarbonate laser emission/reception window
3. Adjustment Component: Sealed waterproof potentiometer knob for sensing distance calibration
4. Electrical Connector: IP67 sealed 5-pin M12 male plug
5. Mounting Structure: Integrated through-hole mounting lugs and dovetail slide groove on housing bottom

Installation Requirements

1. Mount sensor bracket to production equipment machine frame, fix sensor via through-hole screws or slide into dovetail mounting rail
2. Avoid laser beam direct reflection to shiny metal background surfaces outside target detection area
3. M12 connecting cable must be IP67 shielded industrial sensor cable, connector fully screwed tight to maintain water/dust sealing
4. Install away from strong ambient light sources (high-power halogen lamps, direct sunlight) to prevent light saturation of receiver diode

Application Scenarios

• Automated conveyor line small part counting, workpiece presence detection
• Packaging machinery label, carton, plastic bag edge detection
• Electronic assembly tiny component, chip tray position detection
• Logistics sorting parcel height/object presence detection
• Automotive production small metal stamping workpiece detection

Operation & Maintenance Notes

1. Periodically wipe laser emission/reception optical window with soft lint-free cloth to remove dust, oil mist, cutting fluid residue blocking laser beam
2. Adjust sensing distance potentiometer after installation to calibrate background suppression threshold, eliminate false trigger caused by background reflection
3. Do not expose sensor to continuous high-pressure water jet washing; IP67 only resists splash and temporary water immersion
4. If output signal is unstable, check M12 connector wiring looseness and ambient strong light interference sources