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AMADA (THAILAND) CO., LTD.
PRODUCT
Production Goods
Laser Weld Monitor MM-L400A | In-Process Monitoring of Every Weld Point
Key Takeaways
• Monitors all weld points in-process
• Compares reference (OK) waveforms with measured waveforms for OK/NG judgment
• Three-wavelength detection improves abnormality detection accuracy
• Flexible installation: coaxial, external, and scanner-head compatible
• Minimum resolution of 1 μs, supports CW and pulsed lasers
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The Laser Weld Monitor is an in-process device for monitoring laser welding quality on production lines. It monitors every weld point during welding and supports both CW (continuous wave) and pulsed lasers. With microsecond-level resolution and a compact design, it integrates easily into production lines.
🔷 Operating Principle: Comparative Judgment Method
MM-L400A compares preset reference (OK) waveforms with actual welding waveforms. When deviations from normal conditions are detected, welding abnormalities are identified and NG signals are output. Condition verification is required before use.
🔷 Three Types of Optical Detection
The Laser Weld Monitor detects the following light generated at the weld zone:
• Near-infrared radiation
• Reflected light
• Visible plasma light
Detecting multiple light sources enables detailed intensity comparison and reduces missed abnormalities.
🔷 Control Software: MS-Viewer
MS-Viewer enables trigger settings, gain adjustment, envelope settings, waveform comparison, and I/O status monitoring. It offers high usability and is suitable for beginners.
🔷 Installation Methods and Compatible Equipment
Supports external photodetectors, coaxial photodetectors, or combined installation. Compatible with in-house CCD-equipped laser output units and scanner heads.
🔷 Scanner Head Compatibility
With a dedicated photodetector unit, detection can be expanded from point to area according to the operating range of the fθ lens. Compatible with GWM and CL-H series.
🔷 Communication and Production Line Integration
Supports Ethernet (LAN) communication for external device connectivity and data management. CE compliant and space-saving in design.
🔷 Monitoring Resolution
Minimum resolution of 1 microsecond (1 μs). Supports CW and pulsed lasers.
📘 Summary
The Laser Weld Monitor stabilizes laser welding quality control through high resolution, multi-wavelength detection, and flexible installation options.
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❓ FAQ
Q1: Which welding methods are supported?
A1: CW and pulsed laser welding.
Q2: How is quality judged?
A2: By comparing reference waveforms with measured waveforms for OK/NG judgment.
Q3: What types of light are detected?
A3: Near-infrared light, reflected light, and plasma light.
📚 Glossary (Key Terms)
• In-process monitoring: Monitoring conditions during welding
• OK waveform: Reference waveform from acceptable welds
• Coaxial photodetector: Detection along the same axis as the laser beam
• External photodetector: Detection from outside the laser axis
📖 Reference
Micro Welding Machine & Peripheral Equipment Product Information – AMADA CO., LTD. (N/A)
🔗 Cluster Internal Link
• Basic Knowledge:
• Advance Knowledge:
🔒 Trust
The technical information in this article has been verified by Mr. Kazutaka Suehiro of AMADA CO., LTD.
#LaserWeldMonitor #LaserWelding #InProcessMonitoring #IndustrialLaser
#QualityControl #Manufacturing #SmartFactory #AMADA #MM_L400A
📆 Updated: 2026-01-16
Company Information
Industry Classification
Industrial machinery
Main 3 Products
Sheet Metal Fabrication Machines / Metal Cutting Machines / Micro Welding Systems
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Since our founding in 1946, the AMADA Group has continuously created and risen to challenges as a manufacturer of metalworking machinery and supported global manufacturing. With “Growing Together with ...
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