1. Althen Sensors
  2. Sensors
  3. Laser position sensors
  4. 2D laser scanners
  5. FDRF627 Smart-Weld Series

FDRF627 Smart-Weld Series

Laser seam tracking system for welding automation and weld bead profile inspection


Key features

  • FDRF627 Smart-Weld – laser profilers with direct connection to the robot controller
  • Real-time recognition, tracking, and measurement
  • Works with all surfaces, including shiny ones
  • Connection to all common robot controllers

About the FDRF627 Smart-Weld Series

The FDRF627 Smart-Weld Series is an industrial laser tracking system designed for use in automated welding robot systems. It supports welding operations in real time through automatic guidance of the welding head, visual process monitoring, and measurement of geometric parameters of both the weld groove and the weld seam. This makes the system ideal for applications where process reliability, consistent weld quality, and repeatable results are critical.

Key benefits

  • Automatic control of the welding head position during welding for stable seam tracking
  • Visual monitoring of the welding process for quick assessment and fault detection
  • Measurement of weld groove geometry for optimal preparation and process adjustment
  • Measurement of weld seam geometry for quality assurance, documentation, and traceability

Safety & compliance / Operating notes

  • Use only the supply voltage and interfaces specified in the technical data.
  • Switch off the scanner and tablet when connecting/disconnecting cables.
  • For stable measurement results, allow approx. 20 minutes warm-up time after power-on.
  • All devices must be properly grounded.

CE compliance

  • EU 2014/30/EU – Electromagnetic Compatibility (EMC)
  • EU 2011/65/EU (RoHS) – Category 9

Laser safety

  • Laser class 2M according to IEC/EN 60825-1:2014
  • Semiconductor laser, continuous-wave operation
  • Wavelength: 660 nm or 450 nm
  • Max. output power: 20 mW

Safety measures:

  • Do not aim the laser beam at people.
  • Do not disassemble the scanner.
  • Do not look into the laser beam.

Do you need this sensor for your next project?

Request a no-obligation quote or send us your contact details for a free, no-obligation consultation. Our sales engineers will then contact you within a maximum of 1 to 2 working days.

Talk to an expert

Talk to our experts

Not exactly what you are looking for? We offer standard sensors, but can also help you with sensors adapted for you or a fully customised measurement solution. Contact us for advice or pricing.

Talk to an expert

Technical Specifications

Specification Value
Sampling rate, accuracy, resolution / Nominal sampling rate (full working range) 520 profiles/s
Maximum sampling rate (ROI mode) 4200 profiles/s
Linearity (measurement error), Z axis ±0.01% of the range1
Resolution, X axis 728 or 1456 points (programmable value)
Laser 660 nm or 450 nm or 405 nmClass 2M according to IEC/EN 60825-1:2014
Interface / Basic Ethernet / 1000 Mbps
Synchronization inputs RS422, 3 channels
Power supply 9...30 V or 12...36 V for scanners with Blue laser
Power consumption, not more 6 W (without a built-in heater)
Environmental resistance / Enclosure rating IP67
Vibration 20 g / 10...1000 Hz, 6 hours for each of XYZ axes
Shock 30 g / 6 ms
Storage temperature -20…+70°C
Housing/windows material aluminum/glass

Related products

Need something else?

FDRF627 BiSmart-series

  • Linearity, Z axis, % of F.S: ±0.01
  • Resolution, X axis, points: 1456 or 2912
  • Measuring rate, profiles/s: 520 - 4200 (ROI mode)
Datasheet View product

FDRF627-series 2D Laser Scanner

  • Measuring ranges: from 10 mm to 1.165 mm
  • Standard Ethernet/IP protocol
  • Up to 6800 Hz for ROI
Datasheet View product

FDRF629-series 2D Laser Scanner

  • 1280x1024, 1000Hz CMOS sensor
  • 4000 Hz rate for full scanner range
  • >40000Hz rate for ROI
Datasheet View product