Product
3MC860X Three-Phase 86 Digital Stepper Driver
Product Overview
The 3MC860X is an 86-channel digital stepper driver developed based on a high-performance, low-power ARM chip. Its built-in intelligent regulator features PID parameter auto-tuning, allowing it to automatically generate the most suitable settings for different motors without manual adjustments—ensuring optimal motor performance. This driver also delivers exceptionally low motor noise, making it highly cost-effective.
Features
Drive Function Description
Drive Function | Operating Instructions |
Working Current Setting | The driver output current is set using three DIP switches—SW1, SW2, and SW3—and offers eight distinct current levels. For specific details on how to configure the output current, refer to the driver panel instructions. |
Automatic Semi-Flow Function | Users can set the drive’s automatic half-current function using SW4. OFF sets the static current to half of the dynamic current, while ON keeps both currents at the same level. For general applications, SW4 should be set to OFF to reduce motor and driver heat generation, thereby improving reliability. Approximately 0.3 seconds after the pulse train stops, the current automatically drops by 50% (actually around 55%), theoretically reducing heat output by up to 65%. |
Micro-step Frequency Setting | By SW5-SW8 Four DIP switches are used to set the driver's microstep resolution, which totals 16 Microstep subdivision is precise. When setting the subdivision, users should first stop the driver from running. For specific instructions on adjusting the microstep resolution, refer to the driver panel manual. |
Indicator light | The drive has two indicator lights: a red one and a green one. The green light serves as the power indicator—when the drive is powered on, it stays steadily lit. Meanwhile, the red light acts as a fault indicator; it illuminates continuously whenever an overvoltage or overcurrent fault occurs. Once the fault is cleared, the red light turns off. If the drive encounters a fault, the only way to reset it is by powering it off and then back on again, followed by re-enabling the system. |
Signal interface | PUL+ And PUL- To control the positive and negative terminals of the pulse signal; DIR+ And DIR- For the positive and negative terminals of the direction signal; ENA+ And ENA- For the positive and negative terminals of the enable signal. |
Motor interface | U, V, and W correspond to the motor winding groups; swapping any two of the three winding wires will reverse the motor's direction. |
Power interface | Powered by a DC power supply, with a working input voltage range: 20V–90V DC or 18V–80V AC, Recommended input voltage greater than 48VDC , power supply wattage exceeds 300W. |
Installation Instructions | The drive's external dimensions are: 150 × 97.5 × 52.6 mm , with mounting hole spacing of 138.5mm It can be installed either horizontally or vertically (vertical installation is recommended). During installation, ensure it is securely mounted against the metal cabinet to facilitate heat dissipation. |
Product schematic diagram
Parameter Settings
Working Current Setting
Micro-step Detailed Settings
Common Fault Handling
Phenomenon | Possible issues | Mitigation measures |
The motor isn't turning. | The power light is not on. | Normal power supply |
The current setting is too low. | Select the appropriate current range based on the motor's rated current. | |
The drive is protected. | Repower after troubleshooting. | |
The enable signal is low. | This signal can be pulled high or left unconnected. | |
Control signal issue | Check if the control signals are functioning properly. | |
Motor is rotating in the wrong direction | Motor wiring connected incorrectly | Swap any two wires of the same phase in the motor (e.g., interchange the connections for A+ and A_). |
The motor wire has an open circuit. | Check the lines and match them correctly. | |
The alarm indicator light is on. | Motor wiring connected incorrectly | Check the wiring |
Overvoltage | Check the power voltage | |
Motor or drive damaged | Replace the motor or drive | |
Incorrect positioning | Signal interference | Eliminate distractions |
Shielded, unanswered, or improperly connected | Reliable grounding | |
Segmentation error | Set for segmentation | |
Current is too low | Increase the current appropriately. | |
Control signal issue | Check the control signals | |
Motor stalls when accelerating | Time acceleration is too short. | Appropriately increase the acceleration time. |
The motor torque is too low. | Choose a high-torque motor | |
Voltage too low or current too small | Appropriately increase the voltage or set a higher current. |
Main application areas
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Shenzhen Lichuan Electric Co., Ltd.
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