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SRAC Series Two Phase AC Stepper Motor Drives

Advanced Current Control,Torque Ripple Smoothing,Anti-Resonance,Microstep Emulation
● Advanced Current Control
● Torque Ripple Smoothing
● Anti-Resonancelt
● Microstep Emulation
Brand Name: MOONS'
Price: USD  197.0  -  317.0  EA
Free shipping to USA for orders of $100 or more 
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Description

The SR series drives are cost-effective, high performance step drives. The design is based on advanced digital current control technology, and features high torque, low noise, and low vibration. The running current, microstep resolution and other parameters are switch selectable.  

Features

Anti-ResonanceStep motor systems have a natural tendency to resonate at certain speeds.The SR drives automatically calculate the system’s natural frequency and apply damping to the control algorithm. This greatly improves midrange stability, allows higher speeds and greater torque utilization, and also improves settling times.
Provides better motor performance and higher speeds
Microstep EmulationWith Microstep Emulation, low resolution systems can still provide smooth motion. The drive can take low resolution step pulses and create fine resolution motion.
Improves overall system performance
Torque Ripple SmoothingAll step motors have an inherent low speed torque ripple that can affect the motion profile of the motor. By analyzing this torque ripple the system can apply a negative harmonic to counter this effect. This gives the motor much smoother motion at low speed.
Produces smoother motion at low speeds
Microstep EmulationCommand Signal smoothing can soften the effect of immediate changes in velocity and direction, making the motion of the motor less jerky. An added advantage is that it can reduce the wear on mechanical components.
Improves overall system performance
Auto Setup & Self TestAt start-up the drive measures motor parameters, including the resistance and inductance,then uses this information to optimize system performance. The drive can also detect open and short circuits.

Model Numbering System

SR two phases AC driver 

  • SRAC2
  • SRAC4
  • SRAC8
  • Electrical Specifications

    SRAC2

    Parameters Min Typ Max Unit
    Power Supply 80 265 VAC
    Output Current (Peak) 0.6 2.5 Amps
    Cost current of digital input signal 6 15 mA
    Step Frequency 2 10 2M Hz
    STEP minimum pulse width 250 ns
    Direct pulse width 80 ns
    Low-voltage protection point 75*/135* VAC
    Over-voltage protection point 145*/295* VAC
    Input Signal Voltage 4.0 28 VDC
    Initialization time 2.5 S
    OUT maximum output current 100 mA
    OUT maximum voltage 30 VDC
    *Note: When the AC input switch is selected on 115V, under voltage protection point is 75VAC, over voltage protection point is 145VAC. When the input switch is selected on 230V status, under voltage protection point is 135VAC, over voltage protection point is 295VAC.

    SRAC4

    Parameters Min Typ Max Unit
    Power Supply 80 265 VAC
    Output Current (Peak) 0.4 4.0 Amps
    Cost current of digital input signal 0.4 8 Amps
    STEP minimum pulse width 6 10 15 mA
    Step Frequency 2 2M Hz
    STEP minimum pulse width 250 ns
    Direct pulse width 80 ns
    Under Voltage Protection 80 VAC
    Over-voltage protection point 295 VAC
    Input Signal Voltage 4 28 VDC
    Initialization time 2.5 S
    OUT maximum output current 100 mA
    OUT maximum voltage 30 VDC

    SRAC8

    Parameters Min Typ Max Unit
    Power Supply 80 265 VAC
    Output Current (Peak) 0.4 4.0 Amps
    Cost current of digital input signal 0.4 8 Amps
    STEP minimum pulse width 6 10 15 mA
    Step Frequency 2 2M Hz
    STEP minimum pulse width 250 ns
    Direct pulse width 80 ns
    Under Voltage Protection 80 VAC
    Over-voltage protection point 295 VAC
    Input Signal Voltage 4 28 VDC
    Initialization time 2.5 S
    OUT maximum output current 100 mA
    OUT maximum voltage 30 VDC

    Compare Item Price
    (USD)
    Buy Now
    SRAC8 $317.00
    SRAC4 $290.00
    SRAC2 $197.00

    Connector PIN Out / Dimension (Units:mm) 


     

    2D Drawings
    Title Type Size(KB) Date View times Download
    SRAC8_2D Drawings.pdf PDF 57 2017-04-27 0
    SRAC4_2D Drawings.pdf PDF 58 2017-04-27 0
    SRAC4_2D Drawings.dwg DWG 337 2017-04-27 0
    SRAC2_2D Drawings.pdf PDF 91 2017-04-27 0
    SRAC8_2D Drawings.dwg DWG 341 2017-04-27 0
    SRAC2_2D Drawings.dwg DWG 321 2017-04-27 0
    3D Model
    Title Type Size(KB) Date View times Download
    SRAC8_3D Model.step STEP 5021 2017-01-11 2
    SRAC4_3D Model.step STEP 4456 2017-04-27 0
    SRAC2_3D Model.step STEP 10695 2017-01-11 0
    Brochure
    Title Type Size(KB) Date View times Download
    SRAC Series Brochure.pdf PDF 907 2017-04-27 4
    User Manual
    Title Type Size(KB) Date View times Download
    SRAC8_User Manual.pdf PDF 4154 2017-04-27 13
    SRAC2_User Manual.pdf PDF 4707 2017-04-27 3
    SRAC4_User Manual.pdf PDF 3935 2017-04-27 3
    Specifications
    Title Type Size(KB) Date View times Download
    SRAC8_Specifications.pdf PDF 1022 2017-04-27 6
    SRAC4_Specifications.pdf PDF 1071 2017-04-27 1
    SRAC2_Specifications.pdf PDF 812 2017-04-27 0
    Quick Start
    Title Type Size(KB) Date View times Download
    SRAC2_Quick Start.pdf PDF 752 2017-04-27 0
    SRAC8_Quick Start.pdf PDF 641 2017-04-27 0
    SRAC4_Quick Start.pdf PDF 679 2017-04-27 0
    Certification
    Title Type Size(KB) Date View times Download
    SRAC Series_CE.pdf PDF 2042 2017-05-16 4
    SRAC Series_RoHS.pdf PDF 264 2017-05-16 1

    Delivery & Packaging

    Ensure your ordered products are always safely packaged from easy click to
    fast delivery to your hands

    Fast Delivery

    Fast Cross-Border Delivery MOONS' chooses DHL as our main international express shipping partner. As the world's leading logistics specialist, DHL provides our customers with fast and professional inter- national door-to-door delivery service.
    Estimated Delivery Time: e.g. China-USA major cities 3 business days.

    Safely Packaging

    In order to ensure your shipments withstand the long trip and arrive safely and intact, MOONS' specially designed Individual package to pass the drop test with its stable structure. Besides, the package is made from recyclable materials, providing you with professional safety delivery.

    Professional Product Label

    Considering all possible harsh application environments, MOONS' specially designed label for each product, which passes water-resistance test, durability rub test, high temperature resistance and corrosion resistance tests.

    Tip: This label design is suitable for products of stepper motor.