MC860-2A Two-Axis Stepper Driver

Product Overview

The MC860-2A driver is a digital step driver developed with the latest generation of 32-bit DSP chips, covering step of 86 mounting base. This driver supports two control modes: independent pulse control for two axes and synchronous pulse control for two axes. It can control two-axis step separately or synchronously for precise positioning control. The driver integrates two-axis step control into one, and one driver for two machines is suitable for gantry structures to improve the's synchronous control accuracy. Convenient wiring and debugging also improve the flexibility and convenience of on-site applications.

Features

Voltage input range: DC30V~110V; AC24V~80V Maximum current: 8A Subdivision/speed range: 400~51200ppr / 40~950r/min Signal input: differential/single-ended, pulse/direction or dual pulse Pulse response frequency: 200KHz Parameters can be configured via serial port

Product Overview Supporting Products Data Download

Driver Function Description

Driver Functions	Operating Instructions
Microstep Subdivision or Speed Setting	The microstep subdivision of the driver is set by four DIP switches SW5~SW8, with a total of 15 microstep levels. When setting the subdivision, the driver should be stopped first. For specific microstep subdivision settings, please refer to the driver panel instructions.
Output Current Setting	The output current of the driver is set by three DIP switches SW1~SW3, with 8 levels of output current. 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 through software. By setting the half-current ratio and half-current time, the driver enters a half-current state after the pulse train stops for a certain time, reducing motor self-heating and improving reliability.
Signal Interface	In pulse mode: 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. In self-generated pulse IO mode: PUL+ and PUL- are the positive and negative terminals of the start 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	Motor 1: A+ and A- connect to the positive and negative terminals of the stepper motor A-phase winding; B+ and B- connect to the positive and negative terminals of the stepper motor B-phase winding. Swapping the A and B phase windings reverses the motor direction. Motor 2: A+ and A- connect to the positive and negative terminals of the stepper motor A-phase winding; B+ and B- connect to the positive and negative terminals of the stepper motor B-phase winding. Swapping the A and B phase windings reverses the motor direction.
Power Interface	Powered by AC/DC power supply, voltage range 30~110VDC or 24~80VAC, terminals are not polarity sensitive. Recommended power supply is 48V DC with power greater than 250W.
Indicator Lights	The driver has two indicator lights: red and green. The green light is the power indicator, which stays on when the driver is powered; the red light is the fault indicator, which lights up when overvoltage, overcurrent, phase loss, or other faults occur. The power and fault lights will flash regularly. After the fault is cleared, the red light turns off. When a fault occurs, only power cycling and re-enabling can clear the fault.
Installation Instructions	The driver dimensions are: 164 x 95 x 49mm, mounting hole distance is 157.4mm. 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

Control Terminals

Terminal Names	Description Explanation
PUL1+	Axis 1 - External pulse mode: pulse signal input, signal voltage supports 5V-24V; pulse input mode: pulse + direction (pulse port), dual pulse (CW port); pulse active edge adjustable, default is rising edge; pulse width should be greater than 2.5μs for reliable response.
PUL1-
DIR1+	Axis 1 - External pulse mode: direction input, signal voltage supports 5V-24V; pulse input mode: pulse + direction (direction port), dual pulse (CCW port); high/low level signal. To ensure reliable motor direction change, the direction signal should be established at least 5μs before the pulse signal.
DIR1-
ENA1+	Axis 1 - Enable control signal. This input signal enables or disables the driver outputs for axis 1 and axis 2. When ENA is low level (or internal optocoupler conduction), the driver cuts off current to motor phases, putting the motor in free state and ignoring step pulses. If this function is not needed, leave the enable signal terminal floating. (Signal voltage supports 5-24V)
ENA1-
PUL2+	Axis 2 - External pulse mode: pulse signal input, signal voltage supports 5V-24V; pulse input mode: pulse + direction (pulse port), dual pulse (CW port); pulse active edge adjustable, default is rising edge; pulse width should be greater than 2.5μs for reliable response.
PUL2-
DIR2+	Axis 2 - External pulse mode: direction input, signal voltage supports 5V-24V; pulse input mode: pulse + direction (direction port), dual pulse (CCW port); high/low level signal. To ensure reliable motor direction change, the direction signal should be established at least 5μs before the pulse signal.
DIR2-
ENA2+	Axis 2 - Enable control signal. This input signal enables or disables the driver outputs for axis 1 and axis 2. When ENA is low level (or internal optocoupler conduction), the driver cuts off current to motor phases, putting the motor in free state and ignoring step pulses. If this function is not needed, leave the enable signal terminal floating. (Signal voltage supports 5-24V)
ENA2-
ALM+	Alarm output signal, requires external 24V power supply; when axis 1 motor alarm occurs, signal is output through the alarm port. (Default is normally open interface, i.e., signal output when alarm occurs; can be changed to normally closed output by setting parameter PA-21 to 1 via software communication, i.e., signal disconnects when alarm occurs.)
ALM-

Motor Winding Terminals

Terminal Names	Description
1A+	Motor winding interface for phase A and phase B of axis 1 motor The motor rotation direction can be changed by switching A+ and A-
1A-
1B+
1B-
2A+	Motor winding interface for phase A and phase B of axis 2 motor The motor rotation direction can be changed by switching A+ and A-
2A-
2B+
2B-

Motor Winding Terminals

Terminal Names

Description

Voltage input terminal: supports DC: 30~110 VDC; AC: 24~80V voltage

Recommended power supply DC48V, 12A or AC60V, 10A and above

Parameter setting

The MC860-2A driver uses an eighteen-position DIP switch to set microstepping accuracy, dynamic current, and speed, detailed as follows:

Operating current setting

PEAK (Peak current)	RMS (Average current)	SW1	SW2	SW3
2.4A	1.7A	ON	ON	ON
3.0A	2.1A	OFF	ON	ON
3.7A	2.6A	ON	OFF	ON
4.5A	3.2A	OFF	OFF	ON
5.1A	3.6A	ON	ON	OFF
5.8A	4.1A	OFF	ON	OFF
6.5A	4.6A	ON	OFF	OFF
7.2A	5.1A	OFF	OFF	OFF

Microstepping setting & speed range setting

Microstepping	Speed	SW5	SW6	SW7	SW8
400	40 rpm	ON	ON	ON	ON
800	50 rpm	OFF	ON	ON	ON
1600	60 rpm	ON	OFF	ON	ON
3200	70 rpm	OFF	OFF	ON	ON
6400	80 rpm	ON	ON	OFF	ON
12800	90 rpm	OFF	ON	OFF	ON
25600	100 rpm	ON	OFF	OFF	ON
51200	150 rpm	OFF	OFF	OFF	ON
1000	250 rpm	ON	ON	ON	OFF
2000	350 rpm	OFF	ON	ON	OFF
4000	450 rpm	ON	OFF	ON	OFF
5000	550 rpm	OFF	OFF	ON	OFF
8000	650 rpm	ON	ON	OFF	OFF
10000	750 rpm	OFF	ON	OFF	OFF
20000	850 rpm	ON	OFF	OFF	OFF
40000	950 rpm	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, automated assembly equipment, etc.

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