MC425P-2 Switch Quantity Stepper Driver

Product Overview

MC425P-2 digital low-voltage stepper motor driver uses the latest ARM chip technology solution, compatible with two-phase 35, 39, 42 series stepper motors, and features excellent medium and low-speed performance. It can set 8 speed levels within 60 to 600 rpm and 8 current levels within the rated current, meeting the application needs of most small devices. The control method is simple, running smoothly at medium and low speeds, with very low motor noise.

Features

Voltage input range: DC18V to 36V Maximum peak current: 2.5A Speed range: 60 to 480ppr Switch quantity (IO) control type Features protection functions such as overvoltage, overcurrent, and tracking error exceeding limits

Product Overview Supporting Products Data Download

Driver Function Description

Driver Functions	Operating Instructions
Operating Speed Setting	The driver operating speed is set by three DIP switches SW4-SW6, with a total of 4 speed levels. When setting the speed, the driver should be stopped first. For specific speed settings, please refer to the driver panel instructions.
Output Current Setting	The driver output current is set by three switches SW1-SW3, with a total of 8 current levels. For specific output current settings, please refer to the driver panel instructions.
Signal Interface	PUL is the negative terminal of the start control signal; used to control motor start and stop, active low. When the signal is valid, the motor starts running at the speed set by the DIP switches. Input resistance is 220Ω; low level 0~0.5V, pulse width > 2.5μs. DIR is the negative terminal of the direction control signal; used to control motor rotation direction, active low, input resistance 220Ω; requirements: low level 0~0.5V, pulse width > 2.5μs. OPTO is the common positive terminal for PUL/DIR/ENA; connected to a 5V power supply, can be driven by +5V~24V, a current limiting resistor is needed if above 5V; +12V uses a 1.2KΩ resistor, +24V uses a 3KΩ resistor. ENA is the negative terminal of the enable control signal; when connected (low level), it disables the motor enable, allowing the motor shaft to be free.
Motor Interface	A+ and A- connect to the positive and negative ends of the motor A-phase winding; B+ and B- connect to the positive and negative ends of the motor B-phase winding. Swapping the A and B phase windings reverses the motor direction.
Power Interface	+VDC is the positive power supply terminal; GND is the negative power supply terminal. Uses DC power supply with an input voltage range of 18V~36VDC, recommended operating voltage is 24VDC.
Indicator Lights	The driver has two indicator lights: red and green. The green light is the power indicator; it stays on when the driver is powered. The red light is the fault indicator; it stays on when overvoltage or overcurrent faults occur. After the fault is cleared, the red light turns off. To clear faults, power cycling and re-enabling the driver are required.
Installation Instructions	The driver dimensions are: 86 x 55 x 20.5mm, mounting hole distance is 79mm. 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

The MC425P-2 digital stepper driver uses a six-position DIP switch to set operating current and speed, described in detail as follows:

Operating Current Setting

Output Peak Current (A)	SW1	SW2	SW3
0.5	on	on	on
0.7	off	on	on
1.0	on	off	on
1.3	off	off	on
1.6	on	on	off
1.9	off	on	off
2.2	on	off	off
2.5	off	off	off

Speed Range Setting

Speed (RPM)	SW4	SW5	SW6
60	on	on	on
90	off	on	on
120	on	off	on
180	off	off	on
240	on	on	off
300	off	on	off
360	on	off	off
480	off	off	off

Main Application Areas

Suitable for various motion control automation equipment and instruments, such as production lines requiring constant speed operation, feeding, collecting, and other workstations. 。