This article introduces the flame alarm system of the LaserPecker LX2, including its working principle, configuration methods, alarm responses under different modes, and important safety precautions.
1. Flame Alarm Function Introduction
The LX2 is equipped with five flame sensors (two on the front of the machine frame, two on the rear, and one inside the Laser Module) and one temperature sensor (inside the Laser Module). The system detects potential fire risks by monitoring flame wavelengths and changes in ambient temperature.
Flame alarm settings can be adjusted in the LDS software, including changing the detection sensitivity or disabling the flame alarm function.
When the flame alarm is disabled, the LX2 will not trigger any alarms in the event of a fire.
When using the 2W Infrared Laser Module (1064 nm), the flame alarm is disabled by default. This is because the infrared laser wavelength falls within the detection range of the flame sensors and may cause continuous false alarms.
Sensor Locations
The image below shows the distribution of flame sensors on the LX2 machine:
In addition, a flame sensor is integrated inside the 20W / 40W / 60W 455 nm Laser Modules.
2. Enabling and Configuring the Flame Alarm
(1) Connect to the machine and open the Device Settings interface.
(2) Select Mode Settings, enable Flame Alarm, and choose either Low Sensitivity or High Sensitivity mode as needed.
Low Sensitivity Mode
In Low Sensitivity mode, the system triggers an alarm only when sustained flames are detected. Processing pauses automatically, and a prompt appears for user inspection.
High Sensitivity Mode
In High Sensitivity mode, the system responds more sensitively to small flames. Once clear flame characteristics are detected, an alarm is triggered immediately.
3. Flame Alarm Levels
The system triggers different alarm levels based on the detected fire risk.
(1) Minor Fire Alarm
Symptom:
The buzzer emits a continuous alert tone, a warning dialog appears in the LDS software, and processing pauses automatically.
Possible Causes:
A small flame during engraving, or false alarms caused by environmental interference such as direct sunlight.
Actions to Be Taken:
- Observe the processing area and material surface for smoke, visible flames, or abnormal burn marks.
- If an open flame is detected, immediately press the Emergency Stop button to cut off power and extinguish the flame source.
- If no abnormality is found, confirm that the environment is safe, close the warning dialog in LDS, and choose Continue or Cancel based on the situation.
(2) False Flame Detection
- If sunlight shines directly on the material, consumables reflect strong light, or debris remains on the Base Plate, the device may misidentify these conditions as flames and trigger an alarm.
- To reduce false alarms, ensure that the working environment is clean and free from the above factors.
(3) Major Fire Alarm
Symptom:
The buzzer emits a continuous alert tone, a severe fire warning appears in the LDS interface, and processing pauses automatically.
Possible Cause:
Detection of a sustained open flame.
Actions to Be Taken:
- Immediately press the Emergency Stop button.
- If a fire extinguisher unit is installed, the system will auutomatically activate it within seconds
(ensure all protective covers/doors are closed). After the fire extinguisher unit triggers, immediately press the Emergency Stop button on the device to cut off power, then extinguish the fire source. - If no fire extinguisher unit is installed, immediately preess the Emergency Stop button on the
device to cut off power, and quickly extinguish the fire source. - After the flame is extinguished, ventilate the area by opening windows or using an air purifier.
- Once the smoke has dissipated, inspect the machine interior carefully, clean the Base Plate, and restore power only after confirming normal conditions.
4. Important Safety Warnings
(1) Risk of Disabling the Alarm
Disabling the flame alarm removes active fire detection and significantly increases the risk of equipment damage and fire spread.
(2) False Alarm Prevention
Keeping the processing area clean and avoiding operation in direct sunlight can greatly reduce false alarms.
(3) Fire Extinguisher Unit Usage
Installing a fire extinguisher unit is an important safety enhancement. After activation, strictly follow the power-off and ventilation procedures described above and replace the fire extinguisher unit promptly.