ANDON

Various Uses of ANDON Station with Tower Light in Manufacturing Industries

In today’s fast‑paced manufacturing environment, real-time communication is essential for achieving higher productivity, reducing downtime, and maintaining consistent product quality. One of the most effective tools that support this is the ANDON Station integrated with Tower Lights—a simple yet powerful visual management system used across manufacturing units worldwide. 

An ANDON system provides immediate visibility into production status by giving workers and supervisors clear, easy-to-understand signals. When combined with tower lights (also known as stack lights), ANDON becomes even more actionable and intuitive. 

What Is an ANDON Station? 

An ANDON Station is a manual or automated alert mechanism used on the shop floor to signal abnormalities, request support, or communicate status updates. Operators press buttons or pull cords to trigger alerts, while modern systems may activate ANDON signals automatically through sensors or PLC systems. 

When linked with tower lights, the system visually displays the operational status using color-coded signals such as: 

  • Green – Normal operation 
  • Yellow/Amber – Attention required / minor issue 
  • Red – Line stop / critical issue 
  • Blue – Material shortage 
  • White – Quality check required 
  • (Colors may vary depending on industry standards.) 

Key Uses of ANDON Stations with Tower Lights 

1. Immediate Indication of Machine or Process Abnormalities 

Tower lights enable technicians and supervisors to quickly identify issues from a distance. 
For example: 

  • A red light might indicate machine failure. 
  • A yellow light may represent a warning or minor fault. 

This helps reduce diagnosis time and speeds up corrective actions. 

2. Operator Call for Help (Maintenance, Quality, Safety) 

One of the primary uses of ANDON is enabling operators to call for assistance. 
Typical call types include: 

  • Maintenance Help Call 
  • Quality Check Call 
  • Supervisor Assistance 
  • Safety Alert 

Each call type is represented with a distinct tower light color, ensuring the right team reaches the right station without delay. 

3. Real-Time Production Status Monitoring 

ANDON tower lights act as a live dashboard for production lines. They can display: 

  • Running status 
  • Planned downtime 
  • Changeover status 
  • Idle condition 
  • Shift start/end events 

This improves transparency and enhances communication between operators, line leaders, and production managers. 

4. Preventive Maintenance Alerts 

Advanced ANDON systems integrate with machine controllers to indicate: 

  • Lubrication scheduling 
  • Tool change requirements 
  • Filter cleaning 
  • Calibration reminders 

Tower lights provide a non-intrusive, highly visible method to trigger preventive maintenance actions. 

5. Lean Manufacturing Support (Jidoka & Just-in-Time) 

The ANDON system is a core pillar of Lean Manufacturing. 
It supports: 

  • Jidoka (Autonomation): Automatically stopping processes when defects occur 
  • JIT Replenishment: Blue or white tower lights can signal material shortage, triggering material handlers to act 

By reducing waste and enabling smarter workflows, ANDON contributes significantly to operational efficiency. 

6. Enhancing Safety Communication 

Safety-related alerts can be immediately displayed using tower lights: 

  • Emergency stop activation 
  • Safety gate open 
  • Hazard detection by sensors 

Such visual cues ensure quick action to prevent accidents. 

7. Quality Inspection & Rejection Alerts 

Quality teams can use the ANDON station to: 

  • Signal incoming quality checks 
  • Indicate inspection status 
  • Highlight rejected or defective items 

This prevents mix-ups and ensures only approved material moves further along the production line. 

8. Monitoring Cycle Time & Productivity Deviations 

Integrated ANDON systems can automatically track cycle times and alert when: 

  • Production exceeds standard cycle time 
  • Bottlenecks occur 
  • Line output varies from target 

Tower lights visually show if production is on-track, behind, or ahead, promoting timely decision-making. 

9. Downtime Tracking & Analysis 

Every ANDON activation creates valuable data. 
Manufacturers can analyze: 

  • Downtime reasons 
  • MTTR (Mean Time to Repair) 
  • MTBF (Mean Time Between Failures) 
  • Response time of teams 

This data drives continuous improvement initiatives. 

10. Supporting Automation & Smart Factory Systems 

Modern Industry 4.0 setups link ANDON tower lights with: 

  • PLCs 
  • SCADA 
  • IoT platforms 
  • MES (Manufacturing Execution Systems) 

This enhances visibility, predictive maintenance, and automated escalation workflows. 

Conclusion 

The ANDON Station with Tower Light provided by CIPL is a cornerstone of efficient manufacturing operations. From real-time visibility and faster problem resolution to supporting lean processes and smart factory initiatives, this simple system delivers significant value across industries. 

Whether the goal is reducing downtime, improving communication, boosting output, or ensuring quality—ANDON systems remain one of the most cost-effective and impactful tools on the modern shop floor.