MC556-2A Two-Axis Stepper Driver

Product Overview

The MC556-2A driver is a digital stepper driver developed using the latest generation 32-bit DSP chip, designed for one driver controlling two axes. It supports stepper motors with frame sizes 57, 60, and 86. This driver integrates two control modes: external pulse and IO self-generated pulse. It can control two-axis stepper motors independently or synchronously for precise positioning control. It can also simply control motor operation speed through external IO. By integrating two-axis stepping into one unit, this driver not only saves one pulse axis for customers, reducing costs, but also enhances flexibility and convenience in field applications.

Features

Supports two control modes: external pulse input and IO spontaneous pulse Voltage input range: DC24V~50V Maximum current: 5.6A Subdivision/speed range: 1000~12800ppr / 60~540r/min Signal input: differential/single-ended, pulse/direction or dual pulse Pulse response frequency: 200KHz

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 to 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.
Microstep Subdivision Setting	The microstep subdivision or speed setting of the driver is set by three DIP switches SW4 to SW6, with 8 levels. When setting subdivision or speed, the driver should be stopped first. For specific microstep subdivision or speed 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, which stays on when the driver is powered; the red light is the fault indicator, which stays on when overvoltage or overcurrent faults occur. The red light turns off after the fault is cleared. When a fault occurs, only power cycling and re-enabling can clear the fault.
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 DC power supply, operating input voltage range: 24V~50VDC, recommended operating voltage 36VDC, power greater than 150W.
Installation Instructions	Driver dimensions: 134 x 83 x 33mm, mounting hole distance: 111mm. Can be installed horizontally or vertically (vertical installation is recommended). When installing, it should be tightly attached to a metal cabinet to facilitate heat dissipation.

Product Diagram

Control Terminals

Terminal Names	Description Description
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. Axis 1 - IO self-generated pulse mode: motor start control terminal, speed adjusted via SW4-SW6.
PUL1-
DIR1+	Axis 1 - External pulse mode: direction input port, 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, direction signal should be established at least 5μs before pulse signal DIR1-. Axis 1 - IO self-generated pulse mode: direction signal control terminal for motor direction switching.
DIR1-
NC	No connection
NC	No connection
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. Axis 2 - IO self-generated pulse mode: motor start control terminal, speed adjusted via SW4-SW6.
PUL2-
DIR2+	Axis 2 - External pulse mode: direction input port, 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, direction signal should be established at least 5μs before pulse signal. Axis 2 - IO self-generated pulse mode: direction signal control terminal for motor direction switching.
DIR2-
ENA+	Enable control signal, this input signal is used to enable or disable the output of driver axis 1 and axis 2. When ENA is connected to low level (or internal optocoupler conduction), the driver cuts off current to all motor phases, putting the motor in a free state and not responding to step pulses. If this function is not needed, the enable signal terminal can be left floating. (Signal voltage supports 5-24V)
ENA-
ALM+	Alarm output signal, requires external 24V power supply; when motor axis 1 or axis 2 alarms, the alarm signal is output through the alarm port. (Default is normally open interface, i.e., signal output during alarm; can be changed to normally closed output by setting parameter PA-25 to 1 via software communication, meaning signal is disconnected during alarm.)
ALM-

Motor Winding Terminals

Terminal Names	Description
1A+	Method to reverse the rotation direction of the motor by swapping the A phase and B phase motor winding interfaces of the 1-axis motor: Swap A phase winding with B phase winding, Swap A+ with A-, Swap B+ with B-; All three methods can reverse the motor direction.
1A-
1B+
1B-
2A+	Method to reverse the rotation direction of the motor by swapping the A phase and B phase motor winding interfaces of the 2-axis motor: Swap A phase winding with B phase winding, Swap A+ with A-, Swap B+ with B-; All three methods can reverse the motor direction.
2A-
2B+
2B-

Power Electronics

Terminal Names	Description
+VDC	Voltage input terminal: supports DC 24-50V voltage. GND. Recommended power supply: 36V, 10A or 48V, 6A and above.
GND

Parameter Settings

MC556-2A Driver Support Twelve-position DIP switch to set microstepping accuracy, dynamic current, and speed. Detailed description as follows:

Operating Current Setting

PEAK (Peak Current)	RMS (RMS Current)	SW1	SW2	SW3
1.4A	1.0A	OFF	OFF	OFF
2.1A	1.5A	ON	OFF	OFF
2.7A	1.9A	OFF	ON	OFF
3.2A	2.3A	ON	ON	OFF
3.8A	2.7A	OFF	OFF	ON
4.3A	3.1A	ON	OFF	ON
4.9A	3.5A	OFF	ON	ON
5.6A	4.0A	ON	ON	ON

Microstepping Setting

Microstep	SW4	SW5	SW6
1600	ON	ON	ON
3200	OFF	ON	ON
6400	ON	OFF	ON
12800	OFF	OFF	ON
1000	ON	ON	OFF
3600	OFF	ON	OFF
4000	ON	OFF	OFF
8000	OFF	OFF	OFF

Speed Range Setting

Speed	SW4	SW5	SW6
60rpm	ON	ON	ON
90rpm	OFF	ON	ON
120rpm	ON	OFF	ON
180rpm	OFF	OFF	ON
240rpm	ON	ON	OFF
300rpm	OFF	ON	OFF
420rpm	ON	OFF	OFF
540rpm	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.