2-phase digital stepper driver, 20-50V DC, 1-4.2A for Nema 17, 23 2 phase stepper motor, manufacturer direct sale.
Features:
- Low motor vibration, low noise, no loss of step.
- Optical isolation, difference signal input.
- Automatic motor parameter identification.
- Vector control, ultra-low heating.
- Offer 12-24v control signal interface.
- Step and direction control.
- Fast response, no delay and zero setting time.
- Much lower cost than traditional servo systems.
- No torque reservation.
Specifications
Basics Information |
Model | ATODSP57 |
Size | 118 x 75.5 x 34 mm |
Phase | 2 |
Material | Stainless Steel |
Mounting Hole Distance | 112 mm |
Max Input Frequency | 200 KHz |
Input Voltage Range | 20-50V DC |
Output Current | 1-4.2 A |
Control Mode | Step & Direction |
Function Description |
Functions | Operation Instructions |
Signal Interface | PUL | PUL+ is the positive end of the control pulse signal PUL- is the negative end of the control pulse signal |
DIR | DIR+ is the positive end of directional signal DIR- is the negative end of directional signal |
ENA | ENA+ is the positive end of enabling signal ENA+ is the negative end of enabling signal |
Motor Interface | A | A+ is connected with the positive end of the A phase winding of the stepping motor A- is connected with the negative end of the A phase winding of the stepping motor |
B | B+ is connected with the positive end of the B phase winding of the stepping motor B- is connected with the negative end of the B phase winding of the stepping motor |
When the A and B two phase windings are switched, the motor direction is reversed |
Indicator Light | 1. The green light is the power indicating lamp. When the drive is powered on, the green light is always on. 2. The red light is the fault indicating lamp. When the overvoltage and overcurrent faults occur, the trouble lamp is always on. |
Note: The default input signal is 5V pulse signal. When 24V input signal is required, please in series with1.8-2kΩ resistance. |
Switch of Options
Peak Output Current | REF Output Current | SW1 | SW2 | SW3 |
1A | 0.71A | ON | ON | ON |
1.46A | 2.86A | OFF | ON | ON |
1.91A | 3.43A | ON | OFF | ON |
2.37A | 4A | OFF | OFF | ON |
3.84A | 4.57A | ON | ON | OFF |
3.31A | 5.14A | OFF | ON | OFF |
3.76A | 5.71A | ON | OFF | OFF |
4.2A | 3A | OFF | OFF | OFF |
Micro Step Selection
PUL/REV | SW5 | SW6 | SW7 | SW8 |
400 | OFF | ON | ON | ON |
800 | ON | OFF | ON | ON |
1600 | OFF | OFF | ON | ON |
3200 | ON | ON | OFF | ON |
6400 | OFF | ON | OFF | ON |
12800 | ON | OFF | OFF | ON |
25600 | 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 | ON |
20000 | ON | OFF | OFF | OFF |
25000 | OFF | OFF | OFF | OFF |
Driver Wiring Diagram



Installation Size (Unit: mm)

Tips: The role of stepper driver’s subdivision
Major advantages of subdivided driver: Low frequency oscillation of motor is completely eliminated. Low frequency oscillation is the intrinsic characteristic of the stepper motor (especially VR motor). However, subdivision is the only way to eliminate it. If your stepper motor has to work at resonance region (e.g.: run arc) sometimes, it is the only choice to choose subdivided driver to increase the output torque of the motor. Especially for 3-phse VR motor, its torque is increased by about 30-40% when not subdivided. Thus, the resolution of the motor is increased. With the stepping angle reduced and uniformity of the step pitch increased, the resolution of the motor is self-evident. The main role of stepper motor driver’s subdivision is to enhance the accuracy of the stepper motor.
ATODSP57 is digital 2-phase stepper motor driver, using the latest 32 dsp technology, advanced digital filtering technique, anti-resonance technology, precision current control technology and vector control technology. Capable of driving Nema 17, 23 closed-loop hybrid stepper motors.