Pepperl+Fuchs VDM28-50-R1-IO/73c/136 Laser Distance Sensor

Technical Overview

The Pepperl+Fuchs VDM28-50-R1-IO/73c/136 is a universal retroreflective laser distance sensor utilizing Pulse Ranging Technology (PRT). It offers precise measurement to a reflector with a 50 m detection range and features a red laser light (Laser Class 1, eyesafe). This compact device includes an IO-Link interface and provides two push-pull (4-in-1) outputs that are short-circuit and reverse polarity protected. Its robust design with an IP67 degree of protection and a wide operating temperature range makes it suitable for demanding industrial environments.

Key Features

Retroreflective laser distance sensor.
Measuring method PRT (Pulse Ranging Technology) for high accuracy.
Accurate, clear, and reproducible measuring results.
Red laser as the light emitter, Laser class 1 (eyesafe).
Equipped with an IO-Link interface.
Two push-pull (4-in-1) outputs, short-circuit and reverse polarity protected.
Robust IP67 degree of protection.
Compact housing dimensions (25.8 x 88 x 54.6 mm).
Standard M12 (4-pin) connector for easy integration.
Wide operating voltage range of 10-30 V DC.
Operating temperature range of -30 to 55 °C.
Absolute accuracy of ±25 mm and repeat accuracy of <5 mm.

Technical Specification Matrix

Parameter	Value
Measuring range	0.2 ... 50 m
Operating voltage (UB)	10 ... 30 V DC, class 2
Signal output	2 push-pull (4 in 1) outputs, short-circuit protected, reverse polarity protected
Interface type	IO-Link
Degree of protection	IP67
Ambient temperature	-30 ... 55 °C (-22 ... 131 °F)
Absolute accuracy	± 25 mm
Repeat accuracy	< 5 mm
Light emitter	Red laser
Laser class	1, eyesafe
Wavelength	660 nm
Connection	4-pin, M12 x 1 connector
Housing material	ABS (housing), Plastic pane (optical face)

Industrial Applications

1. Automated Material Handling and Positioning

This sensor is ideal for precise positioning tasks in automated warehouses or conveyor systems. Its 0.2-50m measuring range and <5mm repeat accuracy allow for reliable detection and positioning of objects, even at varying distances. The IP67 rating ensures durability in dusty or wet industrial environments.

Problem Solved

Accurate and repeatable detection of package or pallet positions on conveyors, preventing jams and ensuring correct placement in storage or sorting processes.

Positioning controlConveyor systemsMaterial flowObject detectionAutomated storage and retrieval systems (AS/RS)

2. Level Measurement in Industrial Silos/Tanks

With a 50m measuring range and IP67 protection, this sensor can monitor fill levels in large silos or tanks containing non-transparent bulk materials or liquids. The robust housing and wide temperature range make it suitable for harsh outdoor or indoor industrial settings. The laser class 1 ensures eye safety during operation and maintenance.

Problem Solved

Real-time, non-contact level monitoring of aggregates, grains, powders, or liquids in industrial containers, preventing overfills or critical low-level conditions.

Level sensingTank monitoringSilo fill levelBulk material handlingNon-contact measurement

3. Collision Avoidance for Automated Guided Vehicles (AGVs)

The compact size (25.8 x 88 x 54.6 mm), 50m detection range, and quick response of this sensor, combined with its IO-Link capabilities, make it an excellent choice for collision avoidance on AGVs or other mobile industrial robots. It can detect obstacles at a safe distance and provide precise feedback for navigation. The 10-30V DC operating voltage is standard for mobile industrial equipment.

Problem Solved

Preventing collisions of AGVs or robots with static or dynamic obstacles in dynamic factory or warehouse environments, improving safety and operational efficiency.

AGV navigationObstacle detectionRobot safetyCollision preventionIndustrial automation