Y3SD3 7.8A 3Phase Stepper Motor Drive with Alarm Output 24-75VDC input Voltage and 1.5 to 7.8A Current Output

1. Products Overview
Y3SD3 is a DC input 3-phase stepper motor drive, which can be matched with 3-phase hybrid stepper motor with rated phase current from 1.5A to 7.8A. 3-phase stepper system precision and smoothness is better than 2-phase, generally.

Principles of step driver selection:

Following factors must be considered to choose a proper stepper driver: motor type, motor voltage, motor phase current, micro stepping or subdivision, maximum input frequency and mechanical size.

The open-loop and closed -loop step motors need different drivers. At the same time, the 2-phase, 3-phase, and the 5-phase step motor need to choose different stepper drivers, too. Based on the load, calculate the torque needed for the stepper motor.

When selecting the step drive, you need to ensure that the drive output current is a larger range. This can test the system at different voltage levels to meet different application needs. The output current of the drive should not be less than 1.4 times the rated current of the motor.

Choose different micro stepping or subdivisions to test the smoothness of motor.

Because the frequency of the input pulse signal determines the speed of the motor, when the high speed is required, it is necessary to specifically confirm whether the drive can receive a high enough control signal frequency. This mainly depends on the performance of the photovoltaic coupling device and whether the performance of the peripheral filter circuit can clearly filter off the high -frequency interference signal.

Finally, you need to consider whether the size of the step drive is matched with the size of the installation position space.

Y3SD3 is widely used in motion control applications, such as factory automation, carving machines, electronic product manufacturing, logistics sorting, robots, various special automation equipment, medical equipment, CNC machine tools, laser equipment, printing machinery, material processing, safety system, navigation system, industrial test and measurement etc. There are many fields such as measurement and metering systems.

2. Main Technical Specifications

3. Stepper Driver External Interfaces


4. LED Status Indicator Description
Based on LED status indicators, driver working status or abnormal causes can be identified.

5. Output Current Settings

Idel current settings

6. DIP Switch Seetings

7. Control Signals
Input signals descriptions as the followings,

8. Connections
Input connections:

Input connections:


9. Mechcanical Dimenssions

For over 15 years, Kaifull Automation Group has been a leading provider of motion control products and solutions in the Chinese middle and high-end industrial automation market, earning a great reputation and appreciation from customers.

Our cutting-edge R&D and production technology allows us to offer a wide range of motion control and general purpose industrial automation products, such as Hybrid Steppers, Servos, Precise Positioning Systems, Electrical Cylinders, Planetary/Harmonic/Worm Gearboxes, Hybrid Linear Steppers, real Linear Motors Drives, Geared Rotary Actuators, Spindles, VFDs/Invertors, CNC Motion Controllers, etc., all with a minimum of 18 months warranty and 7*24hours technical services. We also provide automation machine solutions for various industries, such as Electronics, Medical, Packing, CNC, Laser/Plasma, Printing, Factory Automation, and New Energy. Our products cover most industrial automation applications, including electronics, professional industrial CNCs, civil CNCs (laser, plasma, machine tool cutting, engraving, milling, marking, soldering, etc.), medical, aerospace, packing, printing, new energy, auto motives, robotics, etc.

Our company's key advantages include customer-oriented product design, international R&D cooperation, strict production and quality assurance systems, long-term partnerships, fast delivery and strong services, and flexible customization.

We are currently working with customers from over 10 countries and supporting many international big brands, and we look forward to building strong partnerships with more customers or agents.