MC860-Mini Two-phase 86 Stepper Driver

Product Overview

The MC860-Mini is a classic two-phase 86 stepper driver, mainly used to drive 86-type two-phase hybrid stepper motors. It offers 16 microstepping subdivisions, with a maximum step count of 51200 pulses per revolution; its operating peak current range is 2.4A to 7.2A, with 8 output current levels and a current resolution of approximately 0.6A. It features automatic half-current, overvoltage, and overcurrent protection functions. This driver supports both AC and DC power supply, with a recommended operating voltage range of 18V-80VAC and 24-110VDC.

Features

Voltage input range: DC24V～110V/AC18V~80V Maximum peak current: 7.2A Subdivision range: 400～51200ppr Pulse form: Pulse + Direction Pulse response frequency: 0～200KHz Motor parameter auto-tuning function With overvoltage, overcurrent, tracking error overrun and other protection functions.

Product Overview Supporting Products Data Download

Driver Function Description

Driver Functions	Operating Instructions
Operating Current Setting	The output current of the driver is set by three DIP switches SW1-SW3, with a total of 8 levels. For specific output current settings, please refer to the driver panel instructions.
Automatic Half-Current Function	Users can set the driver's automatic half-current function via SW4. OFF means the static current is set to half of the dynamic current, ON means the static current is the same as the dynamic current. Generally, SW4 should be set to OFF to reduce heating of the motor and driver and improve reliability. About 0.3 seconds after the pulse train stops, the current automatically reduces by 50% (actual value 55%), theoretically reducing heat generation by 65%.
Microstep Subdivision Setting	The microstep subdivision of the driver is set by four DIP switches SW5-SW8, with a total of 16 microstep levels. When setting the subdivision, the driver should be stopped first. For specific microstep subdivision settings, please refer to the driver panel instructions.
Indicator Lights	The driver has two indicator lights: red and green. The green light is the power indicator and stays on when the driver is powered. The red light is the fault indicator and stays on when overvoltage or overcurrent faults occur. After the fault is cleared, the red light goes off. When a fault occurs, only power cycling and re-enabling can clear the fault.
Signal Interface	PUL+ and PUL- are the positive and negative terminals of the control pulse signal; DIR+ and DIR- are the positive and negative terminals of the direction signal; ENA+ and ENA- are the positive and negative terminals of the enable signal.
Motor Interface	A+ and A- connect to the positive and negative terminals of the stepper motor's A-phase winding; B+ and B- connect to the positive and negative terminals of the B-phase winding. Swapping the A and B phase windings reverses the motor direction.
Power Interface	Powered by DC power supply, operating input voltage range: 24V-110VDC or 18V-80VAC. Recommended input voltage is above 48VDC, and power supply capacity should be greater than 300W.
Installation Instructions	Driver dimensions are: 118×75.5×35.5mm with mounting hole spacing of 112.5mm. It can be installed horizontally or vertically (vertical installation is recommended). During installation, it should be mounted tightly against a metal cabinet to facilitate heat dissipation.

Product Diagram

Parameter Settings (Note: Changing the DIP switch settings requires power off and restart)

The MC860-Mini stepper driver uses an eight-position DIP switch to set subdivision accuracy, dynamic current, and half/full current, described in detail as follows:

Operating Current Setting

Output RMS Current	Output Peak Current	SW1	SW2	SW3
2.00A	2.40A	on	on	on
2.57A	3.08A	off	on	on
3.14A	3.77A	on	off	on
3.71A	4.45A	off	off	on
4.28A	5.14A	on	on	off
4.86A	5.83A	off	on	off
5.43A	6.52A	on	off	off
6.00A	7.20A	off	off	off

Microstep Subdivision Setting

Steps per Revolution	SW5	SW6	SW7	SW8
400	on	on	on	on
800	off	on	on	on
1600	on	off	on	on
3200	off	off	on	on
6400	on	on	off	on
12800	off	on	off	on
25600	on	off	off	on
51200	off	off	off	on
1000	on	on	on	off
2000	off	on	on	off
4000	on	off	on	off
5000	off	off	on	off
8000	on	on	off	off
10000	off	on	off	off
20000	on	off	off	off
40000	off	off	off	off

Main Application Areas

Suitable for various motion control automation equipment and instruments, such as electronic processing and inspection, semiconductor packaging, laser cutting and welding, laser typesetting, packaging machinery, engraving machines, marking machines, cutting machines, garment plotters, CNC machine tools, and automated assembly equipment.

Two-phase 86 Series (1.8°) Hybrid Stepper Motor

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