1. Introduction
The Qixing Three Generations 622 Electric Control Box is a flat servo control system specifically designed for industrial sewing machines. This unit integrates computer control to manage various sewing and embroidery functions, operating on a 220V AC power supply. It is crucial to note that this product is exclusively for industrial sewing machines and is not compatible with other machine types.
2. Compatibility & Important Notes
To ensure proper functionality and avoid issues, please observe the following critical guidelines:
- Model Verification: Before purchasing or installing, carefully verify your machine's model and part number. Only an identical part number guarantees compatibility. If part numbers differ, the control box may not be usable.
- Industrial Use Only: This product is strictly for industrial sewing machines. It is not designed for or compatible with household or other types of sewing machines.
- Cosmetic Condition: Due to storage, some units may exhibit minor cosmetic imperfections such as dust or oxidation. These do not affect the product's functionality or performance.
- Uncertainty: If you are unsure about compatibility, it is highly recommended to contact customer service. Provide comprehensive photos of your machine, including the motor front, barcode, machine model, electric cabinet front, and back interface, for confirmation by technical staff.

Figure 1: Comparison of Qixing 622 Electric Control Box Model A and Model B. Model A (left) addresses error codes E01, E03, E10, E15. Model B (right) resolves no power and black screen issues. Both are compatible if their appearance matches the original unit.

Figure 2: Side view comparison of Model A (left) and Model B (right), highlighting shell shape differences.

Figure 3: Top view comparison of Model A (left) and Model B (right), showing differences in screw hole placement.
3. Specifications

Figure 4: Product label detailing electrical specifications and safety warnings.
| Feature | Detail |
|---|---|
| Product Name | Qixing Three Generations 622 Electric Control Box |
| Input Voltage | AC220V |
| Frequency | 50/60Hz |
| Output Power | 550W |
| Phase | 1Ø |
| Material | Plastic |
| Use | Embroidery |
| Type | Sewing Machine Parts |
| Origin | Mainland China |
| Product ID | 622J010299-05180507040560 |
4. Setup & Installation
Follow these guidelines for safe and correct installation:
- Mounting: Securely mount the control box to your industrial sewing machine in the designated location.
- Electrical Connection: Connect all wiring according to your specific machine's diagram. Pay close attention to the following safety warnings:
- The servo driver must be properly connected to an earth (ground) wire to prevent electric shock.
- Do not connect the servo driver to a power source exceeding 264V.
- Model Selection: When replacing an existing control box, ensure you select the correct model (A or B) based on the appearance, shell shape, screw hole positions, and circuit board configuration of your original unit. Refer to Figures 1, 2, and 3 for visual guidance.
- Pre-Operation Check: Before initial use, double-check all connections to ensure they are secure and correctly wired.

Figure 5: Internal view of the control box circuit board and connectors.
5. Operating Instructions
Once the Qixing 622 Electric Control Box is correctly installed, it integrates with your industrial sewing machine's computer system. For specific operational procedures, including programming and function selection, please refer to the main user manual provided with your industrial sewing machine. The control box acts as the core servo control system, enabling the machine's advanced functions.
6. Maintenance
To ensure the longevity and optimal performance of your control box, follow these maintenance guidelines:
- Cleaning: Keep the control box clean and free from dust and debris. Use a soft, dry cloth for cleaning. Avoid liquid cleaners that could seep into the electronics.
- Environmental Conditions: Avoid exposing the unit to excessive moisture, extreme temperatures, or direct sunlight.
- Physical Handling: Do not apply heavy objects or excessive force to the plastic casing of the control box.
- Internal Access: Do not attempt to open the front or rear cover of the driver and motor, as this can lead to damage or electric shock. All repairs should be performed by qualified personnel.
7. Troubleshooting
The Qixing 622 Electric Control Box is designed to address specific issues depending on the model:
- Model A: This model is designed to resolve common error codes such as E01, E03, E10, and E15. If your machine displays these codes, Model A is the appropriate replacement.
- Model B: This model is designed to resolve issues related to no power or a black screen on your machine's display. If you experience these symptoms, Model B is the appropriate replacement.
If you encounter issues not listed above, or if the problem persists after installing the correct model, please:
- Consult your industrial sewing machine's main troubleshooting guide.
- Contact a qualified technician.
- Contact customer service with a detailed description of the problem and any error codes displayed.
8. Support
For technical support, product inquiries, or any questions regarding the Qixing Three Generations 622 Electric Control Box, please contact the seller's customer service. When contacting support, please have your product model, any relevant machine details, and a clear description of your query ready to facilitate a quicker resolution.