Automation Robot Robot accessories OTC DAIHEN

OTC ARC SENSOR FD‑AR

performs real-time through-arc seam tracking, correcting weld path deviations on mid-to-thick steel/stainless parts with ±1 mm accuracy.

Product Specification

Through-Arc Seam Tracking Sensor OTC DAIHEN® Robotic System

Introduction OTC ARC SENSOR FD‑AR

Real-Time Robotic Seam Correction • Joint Tracking Platform

The OTC Arc Sensor FD‑AR is a high-performance through‑arc welding sensor engineered exclusively for industrial robotic welding systems. Specifically optimized for medium to thick steel and stainless steel materials (≥ 3.2 mm), it enables real‑time seam tracking and automatic correction of weld path deviations caused by curved or thermally distorted workpieces, ensuring consistent weld placement and exceptional quality.

Key Features

Through‑arc seam tracking: Detects electrical arc characteristics during active welding to continuously and accurately follow the joint path.
Real‑time deviation correction: Automatically adjusts the robot trajectory via a gentle weaving motion, correcting dynamic tracking errors as they occur.
No additional torch hardware: All sensing occurs directly via the welding arc. No extra external sensors or bulky components around the torch, simplifying maintenance and reducing tool-center-point setup complexity.
Cost-effective and reliable: OTC’s most budget-friendly seam‑tracking sensor technology that is widely adopted and proven across global fabrication floors.
Tracking Accuracy: Achieves a high precision of ±1.0 mm on stable arc welding parameters and controlled weld pool conditions.

Compatibility & Integration

• Seamlessly integrates directly into standard OTC DAIHEN robotic welding arms and standard processing power sources.
• Operates entirely from the standard robot Teach Pendant via a dedicated user-friendly software menu—no external PC or separate controllers necessary.
• Fully compatible with standard CO₂, MAG, and MAG Pulse welding processes.
• Works in tandem with other sensory accessories (e.g., touch sensing or laser sensors) to enhance multi-pass tracking reliability.

Self-Control System : The entire weld path tracking configuration is controlled directly through the built-in software in the robot's teach pendant, speeding up the calibration process without additional hardware.

Applications & Benefits

Medium-to-thick steel welding: Highly effective on heavy structural components ≥ 3.2 mm where continuous arc tracking ensures stable joint adherence.
Curved or thermally distorted parts: Dynamically compensates for part geometric inaccuracies and shrinkage stresses caused by high heat input during the welding cycle.
Low-maintenance industrial use: Fewer hardware parts near the nozzle area mean zero interference with fixtures and significantly reduced consumable wear.
Broad industrial adoption: Commonly employed in heavy fabrication, pressure vessel manufacturing, structural steel works, and heavy equipment chassis lines.

Why Choose FD‑AR?

Superior seam quality: Keeps the welding torch precisely aligned to the actual physical seam center line, minimizing internal fusion defects.
Enhanced field reliability: Features robust, arc-based signal detection that remains entirely unaffected by flying weld spatter, high ambient light, or surface rust conditions.
Simplified programming setup: Graphical teach-pendant software interface provides intuitive operation parameters, ensuring a minimal engineering learning curve.
Cost-effective performance: Delivers high-precision automated seam tracking without requiring the massive capital investment of external multi-axis laser vision systems.

"The OTC Sensor FD‑AR Arc delivers reliable, high-precision through‑arc seam tracking for mid-to-thick steel welding. With seamless integration, real-time corrective weaving, and user-friendly operation, it offers a low-cost yet robust solution for maintaining weld quality in industrial robotic applications."

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