Solution for RDM5020CL-T70 cleaning with no red light and burning protective lenses

If there is an abnormal situation where the RDM5020CL-T70 cleaning system does not produce red light and burns out the protective lens, the following steps can be followed for troubleshooting and handling:

1. Check whether the customer parameter settings are abnormal
First, enter the system parameter interface and carefully review the customer parameters related to the red light, cleaning power, scanning width, and delay settings. If the red light enable function is disabled, power parameters are unreasonable, or delay settings are incorrect, the red light may not turn on and laser energy may concentrate at the starting point, causing the protective lens to overheat. It is recommended to restore the suggested parameters or load the factory default settings for comparison and verification.

2. Check whether the customer wiring is correct
Inspect all connection cables between the cleaning gun, red light module, laser source, and control system. Make sure the connectors are firmly seated, the wiring sequence is correct, and there are no loose connections, reversed polarity, or poor contacts. Incorrect wiring can prevent red light control signals from being transmitted properly and may also lead to abnormal laser operation, increasing the risk of protective lens damage.

3. Check whether the protective lens is contaminated
Examine the surface of the protective lens for oil stains, dust, or splashes generated during the cleaning process. A contaminated lens can cause laser reflection and localized energy accumulation, resulting in a rapid temperature rise and lens burning. If contamination is found, clean or replace the lens promptly and increase the frequency of routine inspections during operation.

4. Check whether the system version is up to date
Confirm that the controller firmware, control board program, and HMI software are updated to the latest stable versions recommended by the manufacturer. Older versions may contain issues in red light control or interlock logic, and upgrading often improves red light display behavior and overall system stability.

5. Check the laser source settings and gas flow rate
Finally, review the laser source parameters, focusing on output power, operating mode, and gas protection settings. Insufficient gas flow can reduce cooling and protective effectiveness for the lens, making it more susceptible to thermal damage. Adjust the gas flow to an appropriate level according to process requirements to ensure safe and stable operation.