Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of the Qixing Three-generation Integrated Synchronous Encoder, model QD622. This encoder board, also known as the 622 Encoder 3rd QX-coder Board with QX Blue Plug, is specifically designed for use in industrial sewing machines, particularly within control box components for JACK Series and high-speed computer lockstitch machines. It functions as a critical electronic board for precise synchronization.
Figure 1: Front view of the Qixing QD622 encoder board.
Specifications
| Feature | Detail |
|---|---|
| Product Name | Qixing Three-generation Integrated Synchronous Encoder |
| Model | QD622 (622 Encoder 3rd QX-coder Board MVER 5.11KE-6) |
| Brand | Qixing / CY Sewing |
| Type | Sewing Machine Parts, Control Box Components, Electronic Board |
| Material | Plastic (for housing/connector) |
| Use | Embroidery, Industrial Sewing Machines (e.g., JACK Series, high speed computer lockstitch) |
| Connector Type | QX Blue Plug (9 pins) |
| Package Dimensions (approx.) | Length: 15 cm, Width: 15 cm, Height: 3 cm |
| Package Weight (approx.) | 0.09 kg |
Figure 2: Back view of the Qixing QD622 encoder board.
Setup and Installation
The Qixing QD622 encoder board is designed for integration into industrial sewing machine control boxes. Proper installation is crucial for correct functionality. This product is intended for use by individuals familiar with industrial sewing machine electronics.
- **Verify Compatibility**: Before installation, ensure that the part number of the QD622 encoder board matches the required part number for your specific industrial sewing machine model. Incompatible parts will not function correctly.
- **Power Disconnection**: Always disconnect the sewing machine from its power source before attempting any installation or maintenance.
- **Access Control Box**: Open the control box of your industrial sewing machine to access the existing encoder or the designated installation slot.
- **Remove Old Encoder (if applicable)**: Carefully disconnect and remove the old encoder board, noting the orientation and connection points.
- **Install New Encoder**: Position the Qixing QD622 encoder board into the designated slot. Ensure it is securely seated.
- **Connect Wiring**: Connect the multi-colored cable with the blue 9-pin plug to the corresponding port on the control box. Ensure the plug is fully inserted and secured. Refer to the images below for visual guidance on the board and connector.
- **Secure Control Box**: Close and secure the control box cover.
- **Test Functionality**: Reconnect the sewing machine to power and perform a functional test to ensure the encoder is operating correctly.
Figure 3: QX Blue Plug connector detail.
Figure 4: Encoder board with cable and plug.
Video 1: Overview of the Qixing QD622 encoder board and its connector.
Operating Principles
The Qixing QD622 is a synchronous encoder that provides precise feedback on the rotational position and speed of the sewing machine's motor. This information is critical for the machine's control system to maintain stitch consistency, synchronize various machine functions (like needle bar and hook timing), and enable advanced features such as automatic thread trimming or pattern stitching. Once installed, the encoder continuously transmits data to the sewing machine's main control board, ensuring accurate and synchronized operation.
Figure 5: Example industrial sewing machine control boxes.
Maintenance
As an electronic component, the Qixing QD622 encoder board requires minimal direct maintenance. However, adhering to general best practices for electronic parts can prolong its lifespan and ensure reliable performance:
- **Keep Clean**: Ensure the control box area is free from dust, lint, and debris, which can accumulate on electronic components and potentially cause overheating or short circuits. Use compressed air or a soft brush for cleaning.
- **Avoid Moisture**: Protect the encoder board and the control box from moisture and excessive humidity.
- **Inspect Connections**: Periodically check the cable and plug connections for any signs of looseness, corrosion, or damage. Ensure the blue plug is firmly seated.
- **Handle with Care**: When handling the board, avoid touching the electronic components directly. Static electricity can damage sensitive circuits.
Troubleshooting
If your industrial sewing machine experiences issues related to synchronization, motor control, or error codes pointing to encoder problems, consider the following troubleshooting steps:
- **Check Connections**: Ensure all cables, especially the blue plug connector, are securely attached to the encoder board and the control box. A loose connection is a common cause of intermittent issues.
- **Verify Part Number**: Double-check that the installed encoder board's part number (e.g., QD622, MVER 5.11KE-6) precisely matches the requirements of your sewing machine model. Incompatible parts will not function correctly.
- **Inspect for Damage**: Visually inspect the encoder board for any visible signs of damage, such as burnt components, cracked traces, or bent pins on the connector.
- **Consult Machine Manual**: Refer to your industrial sewing machine's specific service manual for error codes related to the encoder or motor synchronization. This may provide specific diagnostic steps.
- **Professional Assistance**: If basic troubleshooting does not resolve the issue, it is recommended to seek assistance from qualified electronic control maintenance personnel or a certified sewing machine technician.
User Tips
- **Model Verification is Key**: Always confirm your machine model and the required part number before purchasing or installing. Even slight differences in part numbers can lead to incompatibility.
- **Consult Customer Service**: If you are unsure about compatibility, send clear photos of your machine (including motor front, barcode, machine model, electric cabinet front, and back interface) to customer service for confirmation. This can prevent incorrect purchases.
- **Electronic Expertise Recommended**: Installation and troubleshooting of electronic components like this encoder board are best performed by individuals with experience in electronic control maintenance.
- **Version Updates**: Be aware that electronic components may have different versions or iterative circuit board designs. While functionality is guaranteed for the applicable machine, the physical appearance of the board might vary slightly from product images due to factory updates.
- **Battery Information**: If the circuit board contains a battery, it may be removed before shipping when choosing fast logistics options, due to platform shipping regulations.
Warranty and Support
This product is tested by the technical department before shipping to ensure quality. Due to the specialized nature of industrial sewing machine parts and the potential for improper installation, all sales are final. We do not accept returns or refunds for this item once sold, nor do we accept disputes based on incompatibility if the customer did not verify their machine model and part number prior to purchase.
For technical inquiries or assistance with compatibility, please contact customer service. Provide detailed information and photos of your machine for accurate support.
**Contact Information:**
- Customer Service: Refer to your purchase platform for direct contact methods.
- WhatsApp: +8613585909914 (for technical queries)
