The Role of Tri-color Warning Lights in Hydraulic Machinery

Tri-color warning lights play a crucial role in hydraulic machinery, serving as a bridge for human-machine communication and a sentinel for safety management. Their function extends far beyond simple signal indication; they are an essential component of the intelligent and human-centered design of modern hydraulic equipment. Below, Jianlong Hydraulic Technology will share the core functions of tri-color warning lights in hydraulic machinery for your reference!

1. Core Function: A "Visual Language" of Hydraulic Equipment Status

Tri-color lights, through internationally recognized color codes, transform the complex internal state of the hydraulic system into visual signals that any operator can instantly understand.

2. Specific Functions and Value

2.1 Enhancing Safety Levels

2.1.1 Immediate Danger Warning: Flashing red lights and a buzzer immediately attract the attention of all personnel in the vicinity, preventing approach when equipment malfunctions or safety doors are open, effectively preventing personal injury accidents.

2.1.2 Clearly Determining Equipment Status: Operators can determine from a distance whether the equipment is safe to approach or operate, eliminating risks caused by misjudgments of its status.

2.2 Improve Production Efficiency

2.2.1 Rapid Response and Diagnosis: When the yellow light illuminates, it alerts operators or maintenance personnel to take preventative measures, preventing minor issues from escalating into serious downtime (red light). This significantly reduces troubleshooting and response time.

2.2.2 Reduce Downtime: Clear indicator lights guide personnel to take quick and correct actions. For example, a yellow light combined with a filter icon indicates the need to replace the filter cartridge, reducing time spent on blind inspections.

2.3 Achieve Lean Production Management

2.3.1 Andon System Core: The three-color indicator lights are the physical embodiment of the "Andon system" in lean production. They visualize anomalies in the production process (such as material shortages or quality issues), prompting immediate responses from relevant personnel and achieving "uninterrupted" quality control.

2.3.2 Clear Status Overview: In the workshop, managers can instantly perceive the status (normal, warning, shutdown) of the entire production line or all equipment by observing the colors of the three-color lights, facilitating production scheduling and decision-making.

2.4 Protecting Equipment Assets

2.4.1 Preventative Maintenance Reminders: Yellow light warnings for oil temperature, oil level, and filter blockage allow for maintenance before severe wear or damage to hydraulic components, effectively extending the service life of core components such as pumps, valves, and cylinders.

2.4.2 Avoiding Operation with Malfunctions: Clear fault indicators (red lights) force equipment to stop, preventing secondary damage caused by continued operation in abnormal conditions.

3. Typical Application Examples in Hydraulic Machinery

Taking a coin and medal stamping hydraulic press (the area we discussed earlier) as an example:

3.1 Solid Green Light: Equipment is ready; the hydraulic system is pressurized and awaits the insertion of blanks for stamping.

3.2 Flashing Yellow Light:

3.2.1 The hydraulic oil temperature has reached 45°C (set upper limit), reminding the operator to check the cooling system.

3.2.2 The number of stamping cycles has reached the preset mold maintenance value, reminding the operator to perform routine checks.

3.3 Red light constantly on and ringing:

3.3.1 System pressure momentarily too high, causing the safety valve to open or the pressure sensor to alarm.

3.3.2 Foreign object intrusion or overtravel detected during the pressing process; the machine immediately stops.

3.3.3 Emergency stop button pressed.

For hydraulic machinery, the three-color warning light is not merely a decorative accessory. It is a key component integrating safety protection, status monitoring, efficiency improvement, and equipment maintenance. It transforms the invisible information such as pressure, flow, and temperature within the hydraulic system into an efficient and intuitive visual language, serving as the cornerstone for safe production, lean management, and intelligent operation and maintenance. For more information/suggestions on three-color warning lights or to purchase other high-quality hydraulic presses, please contact us (or scan the WhatsApp QR code below). Jianlong Hydraulic Technology will provide you with personalized and customized professional solutions and is dedicated to serving you.