Relfar FWH20-DC30A-V4-T Intelligent Double Pendulum Handheld Laser Cleaning Head

1. Product Overview

The Relfar FWH20-DC30A-V4-T is an intelligent double pendulum handheld laser cleaning head designed for efficient rust removal and surface cleaning. This device offers a wide scanning range and high scanning speed, making it suitable for various industrial applications. Its lightweight design ensures ease of use and maneuverability.

Figure 1: Relfar FWH20-DC30A-V4-T Handheld Laser Cleaning Head

2. Specifications

Figure 2: Detailed Product Parameters

2.1 Packing List

Figure 3: Packing List Components

3. Setup and Installation

3.1 Pipe Connection (Cooling Water and Protective Gas)

The system requires connections for cooling water and protective gas. Ensure proper connections for optimal performance and safety.

• Gas for regular use: Compressed air (requires oil-water filtration) or a mixture of argon, nitrogen, and compressed air (also requires oil-water filtration).
• Cooling water: Connect a 6mm air tube. The excess heat is dissipated through an internal structural member water route to maintain cleaning performance. Ensure a series connection for the cooling water.

Figure 4: Cooling Water and Protective Gas Pipe Connection

3.2 Optical Fiber Input Installation

To install the optical fiber:

1. The QBH interface is designed for horizontal arrangement. Carefully remove the dustproof seal cover.
2. Align the red dot on the fiber optic head with the red dot on the QBH interface.
3. Slowly and gently insert the fiber optic head into the QBH interface.
4. Once inserted, rotate the QBH clockwise until it locks into position (you should hear a 'click').
5. Lift up the rotating mantle and rotate it until the head of the optical fiber is compressed.
6. Before operating the laser, ensure the front-end clamshell dust blocking plate is open.

Figure 5: QBH Dustproof Seal Removal and Fiber Optic Head Insertion

Figure 6: QBH Locking and Loosening Mechanism

4. Operating Instructions

4.1 System Parameter Setting

The system parameters can be adjusted via the control screen. Modifications take effect after being saved.

• Scanning width: Sets the length of the laser scanning path.
• Maximum/Minimum diameter: Sets the maximum/minimum circular diameter of the waveform. This is automatically displayed after switching the waveform and dedicated parameter.
• System Settings: Access this page to modify system function parameters.
• Alarm State Area: Displays real-time alarms (protective gas underpressure, cold water flow, laser, galvanometer) and safety lock status. Alarm icons will flicker red/blue when active.
• Red light | switch on/off: Controls the red light indication.
• Preparation \ stop | cleaning: Allows or forbids laser emission. Press the cleaning start button in 'ready to clean' state. In 'stop cleaning' state, pressing the button will not initiate cleaning.
• Double click light extraction enabling: Toggles the enabling function. Click once for laser output, double click twice for laser output.
• Delay in enabling gas: Sets a delay for gas blowing before laser emission when processing is enabled.
• Delay in disenabling gas: Sets a delay for stopping gas blowing after laser emission is stopped when processing is disabled.
• Scale factor: Sets the maximum range of the galvanometer. This value must match the actual range to ensure accurate light output dimensions.

Figure 7: System Parameter Setting Details

4.2 APP Download and Connection

The RDWelder mobile application allows for remote management and control of the laser cleaning head.

• Android: Scan the QR code below or visit the provided link to download the app.
• Apple: Search for "RDWelder" in the App Store.

Figure 8: Android APP Download QR Code

Android Download Link: https://manliso.com/versionQrCode.html?qrform=6a7a15d4f48d72e6e02b0b1af8e3bc15&company_code=0038&platform=APP

4.2.1 STA Mode Connection

To connect the device to WiFi via the board card:

1. On the touch screen, click the upper right corner to configure the WiFi hotspot and enter the WiFi configuration page.
2. Set the connection mode to STA and connect to your external WiFi network.
3. If WiFi is currently 'Turned On', click the 'Turned On' button to turn it off. When the WiFi icon disappears, you can enter the configurable WiFi setting state.
4. After configuration, click the 'Turn On WiFi' button. The system will connect to the external WiFi.
5. Once connected, the WiFi configuration mode will turn off, the remote icon will light up, and the device will be in an online state.

4.2.2 APP Settings and Device Management

1. Launch the APP on your mobile phone.
2. The device connection status in the upper left corner of the motor will show the 'Device Management' page.
3. You can view added cloud devices on the device management page. A highlighted cloud logo indicates the device is online, while a gray-white status indicates it is offline.
4. To connect, select an online device and click 'Connect'.

Figure 9: STA Mode Connection and APP Settings

Figure 10: Equipment Management and Remote Assistance

4.3 APP Functionality

The RDWelder mobile app supports various modes including single pendulum welding, single pendulum cleaning, double pendulum welding, and double pendulum cleaning. Once connected to the board card, the app automatically adapts to the current processing mode.

4.3.1 Welding Mode Functions

• [Home Page]: Manages process parameters, processing status, blowing adjustment, and wire feeding control. Access the 'Technology Center' from the upper right corner.
• [Process]: A welding process library for managing process parameters.
• [Diagnosis]: Manages equipment status, queries alarm records, and enables central correction.
• [Settings]: Manages ordinary setting parameters. Authorization management allows access to advanced parameters.
• [My]: Personal user page for managing personal information.

4.3.2 Cleaning Mode Functions

• [Home Page]: Manages process parameters, processing status, and blowing adjustment. Access the 'Technology Center' from the upper right corner.
• [Diagnosis]: Manages equipment status, queries alarm records, and enables central correction.
• [Settings]: Manages ordinary setting parameters. Authorization management allows access to advanced parameters.
• [My]: Personal user page for managing personal information.

Figure 11: APP Welding Mode and Cleaning Mode Interfaces

4.4 Cleaning Demonstration Video

This video demonstrates the laser cleaning head in action, showcasing various scanning patterns and their effectiveness on rusted surfaces. It illustrates the difference between 200mm and 300mm scanning widths and different pattern types like line, circle, and grid.

5. Maintenance

5.1 Cleaning of Optics Lens

Regular cleaning of the optics lens is crucial for maintaining performance. Follow these steps carefully:

• Tools required: Dust-free gloves or fingerstall, dust-free wiping cotton swab, isopropyl alcohol, and canned dry and pure compressed air.
• Procedure:
  1. Spray isopropyl alcohol onto a dust-free cotton swab.
  2. Align the lens to your eyes. Gently pinch the side edge of the lens with your left thumb and index finger.
  3. Hold the dust-free cotton swab with your right hand and gently wipe the front and back of the lens in a single direction (bottom to top or left to right). Avoid wiping back and forth to prevent secondary contamination.
  4. Blow the surface of the lens with dry and pure compressed air.
  5. Confirm the lens surface is free from foreign matter after cleaning.

Figure 12: Correct and Incorrect Lens Cleaning

5.2 Disassembly and Assembly of Optics Lens

Perform disassembly and assembly in a clean environment, wearing dust-free gloves or fingerstalls.

5.2.1 Disassembly and Assembly of Collimation Lens

• Tools: 2mm inner-hexagon wrench, dust-free cotton swab, alcohol.
• Disassembly Steps:
  1. Clean all dust from the surface of the laser head.
  2. Loosen the four M2.5*6 screws.
  3. Remove the screws upward and carefully replace the lens.
  4. Take out the collimating drawer module and seal the port with textured paper to prevent dust from entering the cavity.
  5. When the two bosses are aligned with the opening slot after the gland is rotated anticlockwise, remove them upward and replace the lens. Note the orientation (plane and convex surface) for reinstallation to avoid affecting the optical path.
• Note: The drawer gap should be installed upwards.

Figure 13: Collimation Lens Disassembly and Assembly

5.2.2 Disassembly and Assembly of Focus Lens

• Tools: 2mm inner-hexagon wrench, dust-free cotton swab, alcohol.
• Disassembly Steps:
  1. Loosen the lateral two M2.5 screws.
  2. Remove the focus drawer assembly horizontally and seal the exposed sealing surface of the cavity with textured paper to prevent dust from entering.
  3. When the two bosses are aligned with the opening slot after the gland is rotated anticlockwise, remove them upward and replace the lens. Note the orientation (plane and convex surface) for reinstallation to avoid affecting the optical path.

Figure 14: Focus Lens Disassembly and Assembly

6. Electrical Interfaces

6.1 CN2 Laser Interface

The laser interface is an 8PIN green terminal. Refer to the table below for signal definitions and instructions.

Figure 15: CN2 Laser Interface Details

6.2 CN3 Temperature Sensor Interface

The temperature sensor interface CN3 is a 4PIN green terminal. The table below shows the definition of the temperature sensor. The user directly inserts the supporting connection line with the terminal.

6.3 HMI Touch Screen Interface

The HMI interface is a 6PIN green terminal for power supply and communication with the HMI, performed via the port. Refer to the table below for signal definitions.

Figure 16: HMI Touch Screen Interface Details

6.4 CN4 Reserved Serial Port Interface

The CN4 interface is a 5-pin green terminal without wiring. Refer to the table below for signal definitions.

6.5 CN6 External Start and Interlock Interface

The CN6 interface is a 4PIN green terminal. Refer to the table below for signal definitions and instructions.

Figure 17: CN4 and CN6 Interface Details

6.6 CN8 General Output Interface

The CN8 interface is a 6-pin green terminal. It uses OC output to directly drive relays with a maximum current of up to 500mA. The wiring diagram is shown below.

Figure 18: CN8 Output Terminal Relay Wiring Diagram

7. Troubleshooting

This section provides guidance for common issues. For more complex problems, refer to the 'Technology Center' in the APP or contact support.

• Alarm State Area: Monitor the control screen's 'Alarm State Area' for real-time indications of issues such as protective gas underpressure, cold water flow, laser alarm, or galvanometer alarm. Address the indicated issue (e.g., check gas supply, water flow, or laser status).
• Safety Lock: If the safety lock is enabled and an alarm signal is not triggered, the corresponding alarm state will turn blue. If an alarm occurs, the icon will flicker red and blue. Ensure all safety interlocks (e.g., nozzle contact, safety clamp) are correctly engaged.
• No Light Cleaning: If the cleaning start button does not produce light cleaning, ensure the system is in the 'Preparation' state and not 'Stop cleaning'.
• Inaccurate Light Output: Verify that the 'Scale factor' parameter is consistent with the actual range of the galvanometer to ensure accurate length and width of the light output.
• APP Connection Issues: If the device is offline in the APP, check the WiFi connection settings on the board card and ensure the device is connected to the internet.

8. User Tips

• Optimal Cleaning Patterns: Experiment with different scanning patterns (line, circle, grid, oval) to find the most effective one for your specific cleaning task and material. The video demonstration shows how different patterns can achieve varying cleaning results.
• Parameter Adjustment: Fine-tune parameters like scanning speed, laser power, and frequency through the control screen or mobile app for best results on different types of rust or contaminants.
• Regular Lens Inspection: Frequently check the optics lens for dust or debris, as even small particles can significantly impact cleaning efficiency and laser performance. Follow the detailed cleaning instructions to maintain lens clarity.
• Safety First: Always ensure all safety interlocks are engaged and protective measures are in place before operating the laser cleaning head.

9. Warranty and Support

For technical support, product information, or to download additional instruction manuals and application videos, access the 'Technology Center' within the RDWelder mobile application.

Figure 19: Technology Center in the APP

Contact Us

Figure 20: Contact Information for Support

Email: josepha@demarkchina.com

Whatsapp: +86 18371977353

Website: www.demarkchina.cn