1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Lichuan Nema11 Integrated Stepper Motor Driver, model LC28BK. This all-in-one unit combines a stepper motor and driver, offering compact design, stable operation, low noise, and excellent temperature control. It supports both Pulse type and RS485 bus control modes, making it suitable for a wide range of industrial automation applications.
Figure 1: Lichuan Nema11 Integrated Stepper Motor Driver (LC28BK)
2. Specifications
The Lichuan LC28BK series offers various configurations. Key specifications are detailed below:
Figure 2: Shape and Installation Dimensions (Unit: mm)
| Attribute | Value |
|---|---|
| Model Number | LC28BK |
| Brand | LICHUAN |
| Type | Micro Motor (Integrated Stepper Motor Driver) |
| Frame Size | Nema11 |
| Output Voltage | DC20~30V |
| Supply Voltage | DC20~30V |
| Continuous Current (A) | 0.7A / 1.0A (depending on model) |
| Holding Torque (N.m) | 0.09 N.m / 0.18 N.m (depending on model) |
| Encoder Resolution (PPR) | 1000PPR |
| Step Angle | 1.8° |
| Shaft Diameter | Φ5 mm |
| Shaft Extension | D-cut 0.5 x 15 mm |
| Shaft Length | 26 mm |
| Fuselage Height | 28.21 mm |
| Fuselage Length | 51.5 mm (for 0.09 N.m) / 70.5 mm (for 0.18 N.m) |
| Certification | CE, ROHS |
3. Setup and Installation
The LC28BK integrated stepper motor driver is designed for simplified installation, combining the motor and driver into a single unit to save wiring labor and installation space.
3.1 Physical Installation
Mount the motor securely using the four M2.5 mounting holes on the front face. Ensure proper alignment with the driven mechanism. Refer to Figure 2 for detailed dimensions.
3.2 Wiring Diagrams
Connect the power supply and control signals according to the specific control mode (Pulse or RS485) of your unit. A special serial port line is required for communication and cannot be directly connected via USB.
Figure 3: Pulse Type Backpack Integrated Machine Wiring Diagram
Pulse Type Terminals:
- VDC: Power terminal (DC20~30V)
- GND: Ground
- R485-, R485+: 485 terminal (not supported by default for Pulse type)
- PUL: Pulse input
- DIR: Direction input
- ENA: Release signal
- DICOM: Input common terminal
- ALM+, ALM-: Alarm signal
Figure 4: RS485 Type Backpack Integrated Machine Wiring Diagram
RS485 Type Terminals:
- VDC: Power terminal (DC20~30V)
- GND: Ground
- R485-, R485+: 485 terminal
- DI1, DI2, DI3: IO terminal
- DICOM: Input common terminal
- DO1+, DO1-: Alarm signal
Both types feature Power and Alarm indicator lights. The serial port requires a special cable for connection, not a standard USB cable.
4. Operating Instructions
The Lichuan LC28BK integrated stepper motor driver supports Pulse and RS485 control modes, offering precise control for various applications. The integrated design ensures low vibration, reduced noise, and controlled temperature rise during operation, preventing step loss.
4.1 Control Modes
- Pulse Type Control: Utilizes pulse signals for precise position and speed control.
- RS485 Bus Control: Allows for communication and control via an RS485 serial interface, enabling integration into larger control systems.
- CANOpen Bus Control: (Available on some models) Provides advanced networking capabilities for complex automation tasks.
4.2 Basic Operation Demonstration
The following video demonstrates setting speed and direction for the integrated stepper motor using a control panel. This illustrates the responsiveness and control capabilities of the unit.
Video 1: Demonstration of Stepper Motor Speed and Direction Control
5. Safety Features
The LC28BK integrated stepper motor driver is equipped with multiple protection mechanisms to ensure reliable and safe operation:
- Over-voltage Protection: Prevents motor charge and discharge voltage from exceeding safe limits.
- Under-voltage Protection: Safeguards the motor when the input voltage is too low.
- Overcurrent Protection: Prevents motor discharge current from becoming excessively large.
- Over Tolerance Protection: Prevents drive speed errors from being too large, ensuring precise movement.
Figure 5: Integrated Safety Protection System
6. Maintenance
To ensure the longevity and optimal performance of your Lichuan LC28BK integrated stepper motor driver, follow these general maintenance guidelines:
- Keep the motor and driver unit clean and free from dust and debris.
- Regularly inspect all wiring connections to ensure they are secure and free from damage.
- Avoid operating the motor beyond its specified voltage and current limits.
- Ensure adequate ventilation around the unit to prevent overheating.
7. Troubleshooting (Alarm Handling)
The integrated stepper motor driver provides alarm indications to help diagnose operational issues. Refer to the table below for common fault phenomena and their corresponding solutions.
Figure 6: Pulse/RS485 All-in-one Alarm Processing
| Fault Phenomenon | Solution Measures |
|---|---|
| Red light is always on or flashes once every 3 seconds | 1. Driver overcurrent alarm, check if there is any problem with the motor line, or unplug the motor line, only power the driver. 2. If the fault phenomenon does not change, there is a fault inside the drive that needs to be returned to the factory for maintenance. |
| Red light flashes 2 in a row | Drive overvoltage alarm, check whether the input voltage is within the power supply range. |
| Red light flashes 3 in a row | Drive undervoltage alarm, check whether the input voltage is within the power supply range. |
| Red light flashes 4 in a row | Motor phase loss alarm, possible drive motor line disconnection, need to return to the factory for maintenance. |
| Red light flashes 7 in a row | Position deviation too large alarm, check if the speed is too fast, whether the motor is stalled. |
| Red light flashes 8 in a row | EEPROM storage fault, try to restart after initializing parameters, if it still alarms, it needs to be returned to the factory for maintenance. |
| Red light flashes 9 in a row | Return to zero timeout alarm, check if PA_055 is 16515. |
| Red light flashes 10 in a row | Return to zero error alarm, check the return to zero parameters and proximity switch, reset the alarm and re-return to zero. |
| Motor enable is normal but cannot trigger operation | Use the control word to trigger an emergency stop, then check if the internal position parameters are set incorrectly, and then try to trigger the position run again. |
| The motor is whining | 1. Set PA_006 to 0 and then re-drive the motor; 2. Reduce PA_009 and PA_01; 3. Reduce PA_011 and PA_013. |
| The motor swings back and forth | Is the load inertia too large, increasing the deceleration time. |
8. User Tips
- The integrated design simplifies wiring, making the product generally easy to use and install.
- Ensure the power supply voltage is stable and within the specified DC20~30V range to prevent over/under-voltage alarms.
- For optimal performance and longevity, consider the motor's torque and current ratings when designing your application.
9. Frequently Asked Questions (FAQ)
- Q: What machines can this product be used on?
- A: Our products can be used in various applications including CNC routers, bag machines, milling machines, laser equipment, 3D printers, carving machines, foam machines, engraving machines, sewing machines, packaging machines, filling machines, cutting machines, and labeling machines.
- Q: What is the warranty time for this product?
- A: The warranty time is 1.5 months. We also provide life-long technical service and after-sales support.
- Q: How is product quality controlled?
- A: Quality is our priority. We emphasize quality control from the beginning to the end of production. Each product undergoes 24-48 hours of aging tests after manufacturing and is re-tested before packaging and shipping to ensure reliability.
10. Warranty and Support
Lichuan provides a 1.5-month warranty for this product, along with life-long technical service and after-sales support. For any technical assistance or inquiries, please contact our customer support team. On-site service can be provided when necessary.
Contact Information:
For 24-hour online service, please refer to the contact details provided by your seller or visit the official Lichuan website.
Figure 7: Lichuan Customer Support Information