1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Dahao Driver MS21 3-phase stepper driver circuit board. This product is specifically designed for use in industrial embroidery and sewing machines. Please read this manual thoroughly before installation and operation.
Important Compatibility Note: This product is only suitable for industrial sewing machines. It is not compatible with other types of machines.
2. Important Safety Information
- Installation and maintenance should only be performed by qualified personnel.
- Ensure the power supply is disconnected before performing any installation, wiring, or maintenance procedures.
- Verify that the input voltage matches the product's requirements (AC 220V).
- Protect the circuit board from moisture, dust, and extreme temperatures.
- Ensure proper grounding to prevent electrical hazards.
3. Setup & Installation
3.1 Compatibility Check
Before installation, it is crucial to verify the compatibility of this driver with your existing machine. Carefully check your machine's model and the part number of the component you are replacing. Only identical part numbers ensure compatibility. If the part numbers differ, the product may not function correctly.
If you are uncertain about compatibility, please contact customer service. Provide clear photos of your machine, including the motor front, barcode, machine model, electric cabinet front, and back interface photos. Customer service will consult with the technical department to confirm suitability.
Note: This driver operates on AC 220V. It is not compatible with 110V power systems.
3.2 Physical Installation
Mount the driver securely within the electric cabinet of your industrial sewing machine. Ensure adequate space for ventilation, especially around the heatsink and fan, to prevent overheating.
3.3 Wiring Instructions
Refer to the diagram below for proper connection of power, motor, and control signals. Ensure all connections are secure and correctly polarized.
Power Connections:
- AC 220V: Connect the main AC 220V power supply to the designated terminals.
- Ground (G): Ensure proper grounding for safety.
Motor Connections:
- U, V, W: Connect the three phases of your stepper motor to these output terminals.
Control Signal Connections:
- 1. CW: Clockwise rotation control input.
- 2. START: Motor start/enable input.
- 3. AL-: Alarm negative output.
- 4. CCW: Counter-clockwise rotation control input.
- 5. AL+: Alarm positive output.
- 6. G: Common ground for control signals.
DIP Switch Configuration:
The DIP switches (visible in Figure 2) are used to configure various parameters of the stepper driver, such as micro-stepping resolution and output current. Refer to your machine's specific requirements or the original driver's settings for correct configuration. Incorrect settings can lead to improper motor operation or damage.
4. Operation
Once properly installed and wired, the Dahao Driver MS21 controls the stepper motor based on the input control signals from your industrial sewing machine's control system.
- Motor Start/Stop: The 'START' input typically enables or disables the motor's operation.
- Direction Control: 'CW' and 'CCW' inputs dictate the direction of the motor's rotation.
- Alarm Output: The 'AL+' and 'AL-' terminals provide an alarm signal, indicating potential issues or operational status. Consult your machine's documentation for specific alarm interpretations.
Ensure that the machine's control system is sending appropriate signals to the driver for desired motor movement.
5. Maintenance
- Cleaning: Periodically inspect the driver for dust accumulation, especially on the heatsink and fan. Use compressed air or a soft brush to gently remove dust. Minor oxidation may be present on older stock but does not affect functionality.
- Ventilation: Ensure that the cooling fan and heatsink are not obstructed. Proper airflow is critical for maintaining optimal operating temperature and prolonging the life of the driver.
- Connection Check: Regularly inspect all wiring connections for tightness and signs of wear or corrosion. Loose connections can lead to intermittent operation or damage.
6. Troubleshooting
- Motor Not Responding:
- Verify AC 220V power supply is connected and active.
- Check all motor (U, V, W) and control signal (CW, START, CCW, AL+, AL-, G) connections for proper wiring and secure contact.
- Ensure the machine's control system is sending the correct 'START' signal.
- Confirm DIP switch settings match your machine's requirements.
- Incompatible Operation:
- Double-check that the part number of this driver matches your original component. Incompatibility due to differing part numbers is a common issue.
- Confirm that your machine is an industrial sewing machine, as this product is not designed for other applications.
- Alarm Signal Active:
- Investigate the cause of the alarm by checking motor load, power supply stability, and any error codes displayed by your machine's control system.
If troubleshooting steps do not resolve the issue, or if you are unsure about any aspect, it is recommended to contact customer service with detailed descriptions and photos of the problem.
7. Specifications
| Feature | Detail |
|---|---|
| Model Numbers | MS21, MS-21, MS102G |
| Type | 3-Phase Stepper Driver Circuit Board |
| Input Voltage | AC 220V |
| Application | Industrial Embroidery Machines, Industrial Sewing Machines |
| Material | Plastic |
| Approximate Dimensions (L x W x H) | 10 cm x 10 cm x 5 cm |
| Approximate Weight | 0.99 kg |
| Origin | Mainland China |
| Technology | High quality (Japanese technology) |
| Associated Brands (for reference) | DAHAO, Feiya, Zgm, Aemco, Tajima, North Phoenix, Haina, Phoenix, North, Burdan, Swf |
8. User Tips
- Verify Part Numbers: Always confirm that the part number of this driver exactly matches your original component to ensure compatibility.
- Consult Customer Service: If you are uncertain about compatibility or installation, provide detailed photos of your machine and existing components to customer service for verification before attempting installation.
- Power Requirement: Be aware that this unit requires AC 220V power and is not compatible with 110V systems.
- Cosmetic Condition: As these may be older stock components, minor cosmetic imperfections such as dust or oxidation might be present. These do not affect the product's functionality.
9. Warranty & Support
Each Dahao Driver MS21 circuit board undergoes thorough testing by the technical department before shipment to ensure quality and functionality.
Due to the customized nature of these products and pre-shipment testing, all sales are final. Returns, refunds, or disputes based on 'no reason' are not accepted once the product has been sold.
For technical inquiries, support, or questions regarding product compatibility, please contact customer service. Provide as much detail as possible, including machine model, part numbers, and photos, to facilitate efficient assistance.
10. Frequently Asked Questions (FAQ)
- Q: Is this driver compatible with 110V power?
- A: No, this driver requires an AC 220V power supply and is not compatible with 110V systems.
- Q: How can I confirm if this driver will work with my machine?
- A: You must carefully verify your machine's model and the exact part number of the component you are replacing. If you are uncertain, contact customer service with detailed photos of your machine and the part you intend to replace for verification.
- Q: What if the part number is different from my original?
- A: If the part numbers do not match, the product may not be compatible and cannot be used. The seller is not responsible for incompatibility arising from differing part numbers.
- Q: Can I return the product if it doesn't meet my expectations?
- A: All sales are final. Due to the customized nature and pre-tested condition of the product, returns, refunds, or disputes based on 'no reason' are not accepted once sold.