Pepperl+Fuchs RL28-8-H-700-RT_47_105 Photoelectric Sensor

USD 223.68

Compact diffuse photoelectric sensor with 20-700mm sensing range, red LED, PNP output, IP67 housing, and 250 Hz switching frequency.

SKU PEPPERL-FUCHS-RL28-8-H-700-RT/47/105 Category
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Pepperl+Fuchs RL28-8-H-700-RT Photoelectric Sensor

Model Identifier RL28-8-H-700-RT/47/105
Official Part Number RL28-8-H-700-RT/47/105
GTIN Standard NA

Technical Overview

The RL28-8-H-700-RT/47/105 is a compact red-light diffuse photoelectric sensor engineered for precise object detection up to 700 mm. Featuring adjustable sensitivity, a bright alignment spot, and a rugged IP67 housing, it delivers consistent performance on dark, shiny, or multicolored targets in demanding industrial environments. This sensor is designed for various automation tasks requiring reliable object detection with background suppression.

Key Features

  • Visible red-light LED for quick alignment.
  • PNP, normally-open (NO) switch output.
  • 10 – 30 V DC operating voltage.
  • Potentiometer for sensitivity and range adjustment.
  • Dual LEDs: power ON (green) and output status (yellow).
  • Reverse-polarity and short-circuit protection built in.
  • Slim PBT/ABS plastic housing with M8 side-mounting holes.
  • IP67 ingress protection for water- and dust-tight sealing.
  • Not sensitive to ambient light, even with switched energy saving lamps.
  • Light/dark-on electrically switchable.

700 mm diffuse sensing distance with background suppression for reliable object detection.

Technical Specification Matrix

ParameterValue
Detection PrincipleDiffuse reflective with background suppression
Sensing Range20 mm … 700 mm
Light SourceVisible red LED
Wavelength≈ 630 nm
Output TypePNP, normally-open (NO), complementary, short-circuit protected, reverse polarity protected, open collectors
Supply Voltage10 – 30 V DC
Operating Voltage10-30 VDC
Switching Frequency250 Hz
Response Time≤ 2.0 ms
Maximum Load Current200 mA
Voltage Drop≤ 2 V
Hysteresis< 15 % of set distance
AdjustmentPotentiometer for sensitivity and range
Indicators2 LEDs (Green for Power, Yellow for Output)
Housing MaterialPBT/ABS plastic, plastic optical face
Protection ClassIP67
ConnectionM12 x 1, 5-pin connector
Operating Temperature-40 °C … +60 °C
Shock/Vibration Resistance30 g / 10 … 55 Hz (IEC 60068)

Industrial Applications

1. Conveyor Belt Object Presence Detection

This sensor can accurately detect objects moving on a conveyor belt, even those with varying colors or reflective surfaces, due to its 700 mm diffuse sensing range and background suppression.

Problem Solved

Ensures reliable counting and presence detection of diverse products on a production line, preventing jams or missed items.

Diffuse Sensing700 mm RangeBackground SuppressionPNP OutputIP67

2. Industrial Packaging Line Monitoring

With its compact size (8.8 x 5.43 x 2.58 cm) and IP67 rating, the sensor is suitable for integration into packaging machinery where space is limited and exposure to dust or occasional splashing is common.

Problem Solved

Provides robust object sensing in harsh packaging environments, ensuring proper sealing, filling, or labeling processes.

Compact DesignIP67High Switching Frequency10-30 VDC

3. Robotic Gripper Object Verification

The fast switching frequency of 250 Hz and precise detection capabilities make it ideal for confirming object presence in a robotic gripper, enhancing pick-and-place operation efficiency.

Problem Solved

Verifies that a robot has successfully gripped an object, reducing errors and improving throughput in automated assembly.

250 Hz Switching FrequencyRed LED for AlignmentPNP OutputReverse Polarity Protection
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