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Think about your assembly line getting halted unexpectedly. Not a single person has an idea why it has happened, nor do they know what needs to be done next. Quite irritating, isn’t it? The Andon lights system helps in situations like this. They use indicator lights to signal issues using different colors.
In this article, we will discuss what Andon lights are. Also, we will discuss how they function. Afterwards, their key advantages. So keep reading!
Figure 1: Andon light
1) What Is an Andon Light?
An Andon light is a tall, colored lamp often set above a workstation(like a machine) in a factory. It uses red, yellow, and green signals to tell workers at a glance whether a machine is working well or needs attention. Because the message is so quick and clear, workers and managers can spot trouble early and fix it before larger problems occur.
Every color has its own meaning. When the light is green, the machine is working smoothly. A yellow glow suggests a minor fault that should not be ignored. If the light turns red, there’s a real problem, and someone must step in fast.
Figure 2: What is an Andon light
Andon lights are easy to spot. Because of that, they quickly tell you what’s going on. The system gives you a clear update with no spoken report needed. They also reduce wasted time. A quick glance at a red light shows you where help is needed right away. That way, work keeps moving without any unnecessary slowdowns.
2) How Does an Andon Light Work?
Okay, let’s discuss how an Andon light system works on the factory floor. I’ll break it down step by step, so it’s easier for you to see how this little lamp helps you move faster and fix problems sooner.
Figure 3: Working of the Andon light
Step 1) System Is Connected
First of all, the Andon light system either connects directly to machines or is located close to workstations. It can connect via buttons, sensors, or a PLC (Programmable Logic Controller). This configuration enables the system to notice problems and receive notifications from employees at the same time.
Step 2: Triggering the Signal
Next, something goes wrong. A machine may stop working, malfunction, or have a problem. The alert can be triggered in two ways.
- Automatically through the machine’s signaling system.
- The worker can manually signal the alert by pressing a button or pulling a cord.
Step 3) Signal Goes to the Control Unit
The PLC or control unit receives the signal. This unit functions as the brain of the system. It analyses all actions taken, where in the system they were performed, and classifies the issues. This activates the alert almost instantaneously.
Step 4) Light and Sound Are Activated
The Andon tower light has three signals that the control unit activates based on the situation at hand.
- Red indicates a major problem that needs to be sorted out.
- Yellow indicates a cautionary notice that has been issued.
- Green indicates that all systems are operational and functioning properly.
In some cases, a notification signal, such as a buzzer or alarm, is triggered for supplemental indication.
3) Meaning of Andon Light Colors
Now that you understand how an Andon light functions, let us analyze what each color represents. Each color provides a distinct message to assist the team in responding swiftly.
i) What does Green color mean
When the green light glows, it signals that all systems are going. The machine is humming along, and you can continue your work without any problem.
Figure 4: Green Means All Is Good
For example: You’re packing food boxes. With that little green light glowing steadily, you know the sealing machine is working like it should. So you concentrate on your task and keep sliding in one box after another, trusting the seal will hold.
ii) What does a flashing Yellow light mean
The yellow light is your friendly heads-up. It usually means something could use a top-up or a quick look, but there’s no rush right now. Like if you are working in a small bakery that carefully boxes fresh cookies for the store.
Figure 5: Yellow Means Check Soon
When you are performing your duties, the yellow light at your station turns on. It indicates that the supply of dough is low. You immediately alert the supply team to my task. To help you, they come over and refill it right away. Thus, you are able to continue working with minimal downtime.
Ultimately, the entire production line remains operational without any breaks.
iii) Red Means Stop and Get Help
That red light always signals trouble. The equipment has either quit completely or a big error has popped up. Whatever the cause, some quick assistance is essential.
Figure 6: Red Means Stop and Get Help
Think of yourself at a bottle filling station, standing close to the conveyor. One bottle slips from the line and crates tumble behind it. The whole system goes quiet. You hit the Andon button, the red light starts flashing, and everyone rushes over.
4) Benefits of Using Andon Lights Lean Manufacturing
Andon lights sit at the heart of factories. The lean approach centers on squeezing out waste, cutting cycle time, and keeping mistakes to a minimum. By shining clear signals across the shop floor, Andon lights give teams real-time visibility of the process. Here we will examine some of the main benefits of andon lights:
+ Fast Problem Detection: Andon lights make it really easy to see when something is wrong. A quick color change or a soft beep lets everyone know, so the whole team responds almost immediately. Because of that, you spend less time waiting and jump into fixing the issue much faster.
+ Better Team Communication: Andon lights talk to the whole room with color instead of sound. The changing colors tell everybody at a glance what is or isn’t right. That simple signal keeps operators, team leads, and repair teams on the same page.
+ Less Downtime: When issues get addressed quickly, machines spend only a few minutes down instead of hours. That keeps the line moving and protects valuable production time.
+ Safer Work Environment: Andon lights let you spot a problem before it spreads. That early heads-up cuts down on accidents and keeps the whole team safer.
+ Improved Quality: When problems get fixed right away, fewer poor products ever leave the factory. That leads to better performance and, in turn, more satisfied customers.
+ Supports Continuous Improvement: With Andon lights, teams can instantly identify and resolve issues as they arise. This helps with daily refinements and ensures that every subsequent day the production process improves further.
David Spiciarich, a user on Quora, said that the closest tool to highlight problems on the production floor is the Andon system. It consists of lights placed at workstations, each with a pull string.
When a worker spots an issue, they can pull the string to activate the light, which alerts management and may even stop the production line. He explained that Andon supports Jidoka, or autonomation, by making problems visible so they can be fixed right away.
5) How to Implement Andon Lights on Your Production Line
Now that you’ve seen the benefits of Andon lights in lean manufacturing, you may be asking, How do I put them in my own factory? The positive aspect is that they can be set up quite easily if proper steps are followed.
Figure 8: How to Implement Andon Lights
i) Choose the Right Setup
Start by analyzing your production area. Keep an eye on the places where problems pop up again and again, or where workers need a quick signal to call for help. Those trouble spots are the most useful starting points for your Andon system.
After that, pick the style of Andon light that really matches those needs. Most factories start tracking progress using simple red, yellow, and green lights. You can add sound buzzers, and you must pick whether the units plug in or connect wirelessly.
ii) Set Up the Signal System
Next, figure out how the light will actually switch on. Sometimes a worker simply presses a button when something looks off; other times the machine senses trouble and lights up all on its own. Whichever route you choose, mount the signals high and in clear above the equipment or on nearby walls, so every team member can see them fast.
iii) Train Your Team and Improve
Once everything is in place, gather your team for a quick run-through on the new setup. Walk them through the color code and show them exactly when to hit each button. A simple reference card or poster beside the lights can help them if they forget.
After the system is configured, monitor the operations closely. If any problems arise, make some adjustments. For example, change the directives or adjust the light position, and so on. In the long run, all these small changes add up to make the system a lot better.
6) GQEM’s Andon Light products
If you need reliable Andon lights, GQEM is a trusted brand to consider. The company offers several styles of signal lamps that fit right into factories, workrooms, and assembly lines.
At GQEM, we sell stackable lights in bright red, yellow, and green shades. A few versions even add a buzzer, so you get a loud alert as well. Depending on what you want, you can pick units with two colors, three colors, or even extra rings. We offer both wired and wireless Andon systems.
- Our wired solutions are ideal for static workspaces that have a set configuration.
- On the other hand, wireless models have a flexible design, are simple to install, and accommodate effortless movement or reconfiguration of your stations.
Every system comes with a basic control unit or a push button that enables employees to issue notifications. In addition, the lights provided are robust and of industrial standards, designed to withstand dust, water splashes, and the rigors of daily factory operations.
At the moment, Andon lights from GQEM are used and trusted by companies that manufacture electronics, auto components, food packaging, and several others. This ensures that our systems assist teams in problem identification, timely response, and smooth production continuity.
GQEM has a reliable Andon system to meet your requirements, whether you are starting a new line or improving an existing one.
7) FAQ
Q1: How is an Andon light activated?
You can switch it on yourself with a button, or a nearby sensor can do the job for you. Either way, the system lets everyone know there is an issue.
Q2: What is the purpose of an Andon light in lean manufacturing?
It shows the machine’s job status in real time. With that clear view, teams can spot problems quickly and cut down on waste.
Q3: What are the benefits of implementing an Andon system?
It makes talking to each other easier, helps teams fix issues faster, and keeps machine stoppages to a minimum. That blend of benefits makes every step run more smoothly and keeps the workplace safer.
Conclusion
Andon lights are easy, yet powerful, devices that show when something in your process is off. By watching their colors and listening to their tones, you quickly know if a machine is running smoothly or if it needs attention. That early warning lets you save time, reduce errors, and protect the team.
At GQEM, we design LED Andon tower lights for heavy-duty use. Their ease of utilization, combined with their durability, helps ensure your team remains on schedule daily. Furthermore, they promote effective communication while minimizing wait times.
