FAQ

Product Selection & Specifications
Q1: What AI AOI models does Iris Ant offer, and what are their key differences?

Iris Ant provides four AI AOI models across two major series:

Series Model Type Accuracy Target Applications
Inline Series T7 Single Lane 10 μm High-volume single-lane inline full inspection
Inline Series T7D Dual Lane 10 μm High-throughput dual-lane inline full inspection
Offline Series T3 Pro Offline 15 μm Small-to-medium batch, multi-variety rapid changeover
Offline Series T5 Pro Offline 10 μm Precision components and high-accuracy inspection

Selection Recommendation: Choose T7/T7D for 100% inline production line inspection. Select T3 Pro or T5 Pro for sampling or low-to-medium volume production. T5 Pro features higher accuracy, making it suitable for micro-packages and fine-pitch IC inspection.

Q2: What is the difference between Inline AOI and Offline AOI? Which should I choose?

Inline AOI (T7 / T7D): Integrates directly into SMT assembly lines, operating synchronously with screen printers and pick-and-place machines for 24/7 uninterrupted real-time inspection. Ideal for high-volume, short-takt-time production lines.

Offline AOI (T3 Pro / T5 Pro): Deployed independently without occupying main line footprint. Perfect for small-to-medium batch sizes, multi-product line changes, and new product introduction (NPI) verification.

Selection Criteria: Choose Inline if your priority is throughput maximization and full automation. Choose Offline if you require flexible deployment and frequent product switching.

Q3: Does Iris Ant offer Solder Paste Inspection (SPI) equipment?

Yes. The Iris Ant SF-2 series 3D SPI is designed for SMT assembly lines to perform 100% 3D volumetric measurement on printed solder paste, accurately measuring volume, area, height, and offset.

Core Technology: Utilizes Programmable Structured Light Module (PSLM) technology with zero mechanical wear. Achieves a repeatability precision of <10% (6 Sigma), supports 0201 micro-component inspection, features built-in SPC analytical tools, enables 5-minute programming and 3-minute line changeover, and includes lifetime free software updates.

Critical Note: SPI is the first line of defense in SMT quality control—80% of soldering defects occur and can be intercepted during the solder paste printing stage. Skipping SPI allows defects to escape downstream to AOI, ICT, or end customers, inflating repair costs by 10 to 5,000 times.
Technical Advantages & Performance
Q4: How does AI AOI differ from traditional AOI?
Comparison Dimension Traditional AOI Iris Ant AI AOI
Programming Method Manual framing and threshold tuning; requires experienced engineers AI automatic component identification and parameter generation
Programming Time 3 to 5 hours 5 minutes
Operation Barrier Requires dedicated AOI programming engineers Operators learn in 30 minutes
Optimization Mode Fixed algorithms, non-iterative Continuous learning; accuracy improves over time
False Alarm Rate High; risk of missed defect escapes Reduced by up to 80%
Data Security Often requires cloud uploads 100% fully local deployment
Q5: Which inspection challenges can AI AOI solve that traditional AOI cannot?

Traditional AOI relies on rigid RGB thresholds and fixed rules, leading to heavy false alarms and escapes when handling identical background colors, marking interference, or complex DIP solder joint classification.

Iris Ant AI AOI leverages multi-dimensional feature extraction and deep learning models to resolve:

  • Same-Color Interference: Accurately identifies components even when their color closely matches the substrate.
  • Black Inductor & Crystal Markings: Intelligently ignores surface markings to focus strictly on structural defect identification.
  • DIP Solder Joint Classification: Uses locally trained AI classification models to adapt to varying process standards.
  • Component Alignment: Maintains high alignment positioning precision despite surface contamination or dirt.
Q6: Does the AI system require an active internet connection or cloud data upload?

Not at all. Iris Ant AI AOI operates on a 100% local deployment model. All model training and real-time inspection take place on your factory's local server or industrial PC. Core process intelligence and proprietary product designs never leave your facility or get uploaded to vendor cloud servers.

Q7: Is the 80% reduction in false alarm rate genuine? How is it achieved?

Yes. The 80% false alarm rate reduction is validated by real-world SMT production line data through three technical mechanisms:

  1. AI Automatic Programming: Generates precise parameters automatically based on a golden reference board, eliminating false alarms caused by improper manual threshold settings.
  2. Continuous Learning Mechanism: Operator feedback on inspection results continually refines the AI model, improving accuracy over time.
  3. Multi-Dimensional Feature Extraction: Replaces single greyscale thresholds with holistic multi-feature analysis to minimize false judgments.
Important Reminder: False alarm rate is distinct from escape rate (missed defects). Loosening threshold parameters to lower false alarms increases escape rates, leading to customer rejections. Iris Ant AI dramatically decreases false alarms while maintaining an ultra-low defect escape rate.
Operation & Maintenance
Q8: Is programming complex? Is specialized training required?

Operation is straightforward and completed in 4 simple steps within 5 minutes:

  1. Capture Reference Board: Take an image of a good board to set up the baseline sample.
  2. AI Automatic Modeling: AI generates inspection windows, sets parameters, and detects array layouts automatically.
  3. Confirm Results: Review and verify the evaluated inspection criteria.
  4. Feedback & Optimization: Run inspection and provide feedback on false alarms; the AI automatically updates parameters.

No specialized AOI programming engineers are required. Operators can run the system proficiently after 30 minutes of basic training.

Q9: Which file formats are supported? Can the system work without Gerber files?

The system supports flexible programming methodologies:

  • AI Smart Programming: Requires no CAD or Gerber files—only a single good reference board.
  • Gerber Import: Supports standard RS-274X and RS-274D formats.
  • CAD Coordinate Import: Automatically indexes and maps component libraries.
  • Manual Teaching: Allows manual creation of inspection windows when Gerber files are absent.
Q10: How often does the equipment require calibration? Is maintenance complex?

Equipment state directly impacts detection accuracy. On-site data indicates that over 70% of misjudgments stem from hardware condition rather than algorithms.

Recommended Maintenance Schedule:

  • Daily: Clean equipment outer casing, optical lenses, and glass stage.
  • Monthly: Inspect light source attenuation and calibrate camera parameters.
  • Quarterly: Refresh golden board verification programs to validate inspection efficacy.
  • Annually: Conduct comprehensive system calibration and program re-verification.

Replacement Thresholds for Key Consumables: LED Light Source: ~12,000 hours | PU Squeegee: ~600k strokes (Steel: ~1.2M strokes) | Glass Stage: ~18 months.

Q11: How should defective (NG) boards identified by AOI be handled?

When a board is flagged as NG, operators must manually verify each red-highlighted region on screen:

  • False Alarm: Mark as OK and send feedback to the technician to optimize the inspection program.
  • Real Defect: Mark defect location, attach a tracking card, and route to the repair station.
  • 3 Consecutive Identical Defects: Halt line immediately and notify process engineers to investigate root cause.
Prohibited Action: Never click "ALL OK" to bypass window inspection during testing. Every red-marked window must be verified individually to prevent defect escapes.
Q12: How do you verify the effectiveness of AOI/SPI inspection programs?

Using the industry-standard Golden Board Verification Method:

  1. Create NG Samples: Intentionally introduce typical defects (insufficient paste, bridging, missing parts, misalignments) onto a sample board.
  2. Daily Verification: Prior to shift startup, IPQC passes the NG sample board to verify program response and logs the results.
  3. Program Fine-Tuning: If abnormalities occur, technicians adjust program settings promptly.

Note: Solder paste on SPI NG samples must remain in production-equivalent condition to ensure meaningful test reference data.

Procurement & ROI
Q13: How do I select the right AOI model for my factory?
Production Requirement Recommended Model
High-volume single-lane inline full inspection T7
High-throughput dual-lane inline full inspection T7D
Small-to-medium batch / high variety / sampling inspection T3 Pro
Precision components / high-accuracy inspection T5 Pro
Q14: What key factors should be verified before purchasing?
  1. Confirm PCB Specifications:
    • Inline T7 Series: PCB Size ≤ 500 × 325 mm (Customizable).
    • Offline T3/T5 Pro: PCB Size ≤ 470 × 330 mm.
    • Confirm minimum component size (Standard: 0201; Optional: 01005).
  2. Verify Workshop Infrastructure:
    • Power Supply: 220V (Inline: 1.2 kW / Offline: 1.0 kW).
    • Pneumatic Supply: 4 to 6 Bar required for Inline models.
    • Dimensions & Weight: T7 Series (1000×1500×1600 mm / 1000 kg); T3/T5 Pro (860×1040×1318 mm / 345 kg).
  3. Define Optional Features in Advance: Barcode scanning/MES connectivity, 3D height measurement, offline programming, and remote operation.
  4. Incorporate Service Terms into Contract: Lifetime free software upgrades and free replacement guarantee for 3D projection heads (for first-time buyers).
Q15: What is the expected Return on Investment (ROI) for AI AOI?

Traditional AOI program setup takes 3 to 5 hours during product changeover, whereas AI AOI reduces it to 5 minutes, minimizing line downtime drastically.

Quantifiable Financial Benefits:

  • Eliminates dedicated AOI programmer positions, saving $15,000–$40,000 per engineer annually.
  • Cuts false alarms by 80%, substantially reducing manual review labor costs.
  • Reduces costly rework losses caused by escaped defects.
Hidden Cost Insight: Intercepting a defect at the SPI stage costs $1 to repair. If escaped to the customer, recall and handling costs escalate to $500–$5,000 per defect.
Q16: Do I need both SPI and AOI equipment? Can I purchase only one?

Complementary deployment is highly recommended. SPI and AOI address distinct inspection stages across SMT lines:

Equipment Type Inspection Stage Inspection Focus
SPI Post-Solder Paste Printing Paste thickness, area, volume, offset, and bridging
Pre-Reflow AOI Post-Placement / Pre-Reflow Component displacement, missing parts, wrong parts, polarity
Post-Reflow AOI Post-Reflow Soldering Solder joint quality, bridging, cold solder, tombstoning
X-Ray Inspection Post-Reflow Soldering Hidden solder joint defects (e.g., BGA, QFN voids)

Data Correlation Value: Correlating SPI data with AOI defect results validates whether SPI thresholds are set correctly and reveals whether SPI alerts represent true process risks.

Troubleshooting & Data Management
Q17: What should I do if the AOI false alarm rate suddenly spikes?

Step 1: Check Hardware First Before Adjusting Algorithms. Over 70% of sudden misjudgments originate from hardware condition anomalies.

Troubleshooting Checklist:

  • Is the light source attenuated or contaminated?
  • Is the camera lens clean and clear?
  • Is the conveyor belt vibrating or tracking off-center?
  • Are PCB clamps or support pins worn out?
  • Are there scratches on the glass stage?
Critical Advice: If false alarm rates exceed 1.5% for 3 consecutive days, calibrate hardware first. Avoid merely relaxing algorithm thresholds, which decreases false alarms at the expense of elevating defect escapes.
Q18: How do I resolve PCB conveyor jamming in inline models?

Resolution Steps:

  1. Confirm no PCB remains inside the conveyor track.
  2. Click the "Reset" button on the UI.
  3. Click "Start" to resume testing.

Preventive Action: Regularly clean track rails and inspect conveyor belt tension and alignment.

Q19: How do I fix Fiducial Mark Recognition Failures (FID Errors)?

Troubleshooting Steps:

  1. Inspect whether the fiducial mark is obstructed by foreign objects or dirt.
  2. If contaminated, eject board and clean surface.
  3. If clean, adjust fiducial lighting brightness under the Tools / Fiducial Tool menu.
Q20: What if the equipment fails to start or application errors occur?

Common Causes & Solutions:

  • Emergency Stop Pressed: Inspect and release the E-Stop button.
  • Main Power Switch Off: Switch on the main power breaker.
  • Software Conflict: Log out and restart the application, or reboot the controller PC.
  • Motion Card Loose Connection: Check card interface cables for bent pins or loose connections.
Q21: How is SPC data utilized in SMT production?

SPC data generated by SPI/AOI systems serves as a critical asset for SMT process control, enabling manufacturers to:

  • Predict stencil lifespan by monitoring aperture wear.
  • Track solder paste freshness via volumetric consistency trends.
  • Correlate ambient humidity with printing behavior.
  • Evaluate operator operational consistency across shifts.

Core Value: Transforms quality control from reactive post-inspection to proactive drift prevention before physical defects occur.

Q22: Which data integration methods are supported?
  • MES Integration: Real-time inspection data transfer for end-to-end traceability.
  • SPC Reporting: Automated generation of Cp/Cpk quality trend reports.
  • Remote Operation: Status checking and report retrieval via web browsers.
  • Offline Programming: Program setup on standalone workstations without interrupting active production.
  • Open API: Flexible integration capabilities with mainstream MES and ERP systems.
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