1. Product Overview
The Lichuan LC28BK is a versatile Nema11 integrated stepper motor driver, designed for applications requiring precise motion control. This all-in-one machine combines the motor and driver into a single compact unit, supporting both Pulse and RS485 control modes. It features robust protection mechanisms and is suitable for various industrial and home appliance uses.
Figure 1: Lichuan Nema11 Integrated Stepper Motor Driver, highlighting Pulse type, RS485 bus, and CANopen bus control modes.
2. Specifications
2.1 General Specifications
| Attribute | Value |
|---|---|
| Brand Name | LICHUAN |
| Model Number | LC28BK |
| Type | Micro Motor |
| Frame Size | Nema11 |
| Output Power | 18.65-37.5W |
| Torque | 0.09/0.18N.m |
| Holding Torque | 0.09/0.18N.m |
| Continuous Current(A) | 0.7/1.0A |
| Output Voltage | DC20~30V |
| Supply voltage | DC20~30V |
| Encoder Resolution(PPR) | 1000PPR |
| Certification | CE, ROHS |
| Use | Car, BOAT, Fan, Electric Bicycle, Home Appliance |
2.2 Dimensional Specifications
Figure 2: Shape and installation size (unit: mm) for the Nema11 Integrated Stepper Motor.
| Model | Step Angle (°) | Length L (mm) | Holding Torque (N.m) | Shaft Diameter D (mm) | Shaft Extension (mm) | Shaft Length (mm) |
|---|---|---|---|---|---|---|
| LC28BK-P-32N009 (Open Loop) | 1.8 | 51.5 | 0.09 | φ5 | D-cut 0.5 x 15 | 26 |
| LC28BK-C-32N009 (Closed Loop) | 1.8 | 51.5 | 0.09 | φ5 | D-cut 0.5 x 15 | 26 |
| LC28BK-P-51N018 (Open Loop) | 1.8 | 70.5 | 0.18 | φ5 | D-cut 0.5 x 15 | 26 |
| LC28BK-C-51N018 (Closed Loop) | 1.8 | 70.5 | 0.18 | φ5 | D-cut 0.5 x 15 | 26 |
Note: 'P' stands for Pulse, 'R' stands for RS485.
2.3 Electrical Parameters
| Series | Model (Open Loop) | Model (Closed Loop) | Step Angle (°) | L (mm) | Holding Torque (N.m) | Rated Current (A) | Rotor Inertia (g.cm²) | Motor Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| Pulse Series | LC28BK-P-32N009 | LC28BK-C-32N009 | 1.8 | 51.5 | 0.09 | 1.0 | 20 | 0.14 |
| Pulse Series | LC28BK-P-51N018 | LC28BK-C-51N018 | 1.8 | 70.5 | 0.18 | 1.0 | 30 | 0.22 |
| RS485 Series | LC28BK-R-32N009 | LC28BK-RC-32N009 | 1.8 | 51.5 | 0.09 | 0.7 | 20 | 0.14 |
| RS485 Series | LC28BK-R-51N018 | LC28BK-RC-51N018 | 1.8 | 70.5 | 0.18 | 0.7 | 30 | 0.22 |
Encoder Resolution (PPR): Open Loop/Closed Loop: 1000PPR
Power range: DC20-30V / Suggested voltage: DC24V / Power supply power: >30W
3. Safety Features
The Lichuan Nema11 Integrated Stepper Motor Driver is equipped with several protection features to ensure safe and reliable operation:
- Over-voltage protection: Prevents motor charge and discharge voltage from becoming too high.
- Under-voltage protection: Prevents the motor voltage from being too low.
- Overcurrent protection: Prevents motor discharge current from becoming too large.
- Over tolerance protection: Prevents the drive speed error from being too large.
Figure 3: Integrated protection features for the stepper motor driver.
4. Setup and Installation
4.1 Wiring Diagrams
Proper wiring is crucial for the functionality and safety of the integrated stepper motor. Refer to the following diagrams for Pulse type and RS485 type connections.
Figure 4: Wiring diagram for Pulse type backpack integrated machine.
Figure 5: Wiring diagram for RS485 type backpack integrated machine. Note: The serial port requires a special serial port line and cannot be directly connected to USB.
4.2 General Installation Notes
- Ensure the power supply voltage is within the specified DC20~30V range.
- Connect all wires securely to prevent loose connections, which can lead to intermittent operation or damage.
- For RS485 communication, use the appropriate serial port line; direct USB connection is not supported.
- Mount the motor in a location that allows for adequate ventilation to prevent overheating.
5. Operation
The integrated stepper motor driver supports both Pulse and RS485 control modes, offering flexibility for various applications. The video below demonstrates basic speed and direction control.
Video 1: Demonstration of Pulse/RS485 control, showing speed and direction adjustments, and highlighting integrated motor and driver benefits like reduced wiring and space, low vibration, noise, and temperature, and alarm functions.
5.1 Control Modes
- Pulse Type Control: Utilizes pulse signals for precise step and direction control.
- RS485 Bus Control: Allows for communication and control via the RS485 serial bus, enabling more complex command structures and networking capabilities.
- CANopen Bus Control: (Where applicable) Provides advanced networking for industrial automation systems.
Refer to the specific programming guide for your chosen control mode for detailed command sets and parameter configurations.
6. Maintenance
To ensure the longevity and optimal performance of your Lichuan Nema11 Integrated Stepper Motor Driver, follow these general maintenance guidelines:
- Regularly inspect all wiring connections for tightness and signs of wear or damage.
- Keep the motor and driver unit clean and free from dust, debris, and moisture.
- Ensure proper ventilation around the unit to prevent overheating, especially during continuous operation.
- Avoid exposing the unit to extreme temperatures or corrosive environments.
- If the motor is operating in a dusty environment, consider using an enclosure to protect it.
7. Troubleshooting
This section provides solutions for common issues encountered during the operation of the Pulse/RS485 All-in-one Integrated Stepper Motor Driver.
| 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 the command 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. |
Figure 6: Alarm Handling and Troubleshooting Guide.
8. User Tips
- Parameter Tuning: For optimal performance, especially when encountering issues like motor whining or swinging, carefully adjust the PA parameters as suggested in the troubleshooting section. Incorrect parameters can significantly affect motor behavior.
- Power Supply Stability: Ensure a stable and clean DC power supply within the recommended voltage range (DC20~30V) and with sufficient power (>30W) to avoid over/under-voltage alarms and ensure consistent motor operation.
- Wiring Integrity: Double-check all wiring connections before powering on the device. Loose or incorrect wiring is a common cause of operational problems and can lead to component damage.
- Environmental Considerations: While robust, protecting the motor from excessive dust and moisture will extend its lifespan and maintain performance.
9. Warranty and Support
The Lichuan Nema11 Integrated Stepper Motor Driver comes with a 12-month warranty from the date of purchase. During this period, the manufacturer will provide repair or replacement for defects in materials or workmanship under normal use.
Beyond the warranty period, Lichuan is committed to providing life-long technical service and after-sales support. For technical assistance, troubleshooting not covered in this manual, or warranty claims, please contact Lichuan customer support directly.
Please retain your proof of purchase for warranty validation.