SD31045 Stepper Motor Driver

SD31045 Stepper Motor Driver
  • Speeds up to 50 rps (3000 rpm)
  • 16 user selectable step resolutions up to 50,800
  • Input frequency up to 2MHz
  • 310 V bus
  • Outputs current up to 4.5 Arms, selectable in 0.1A increments
  • Automatic current reduction
  • User-selectable current loop gain for performance fine tuning
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    SD31045 user manual










    Microstepping Stepper Motor Drive - 4.5Arms/6.4A peak (230VAC)

    The SD31045 4.5 Amp stepper motor driver is the latest addition to AMCI's family of stepper motor drivers. Identified through a compact design small footprint, this powerful stepper motor driver is a leader in the 4.5 Amp current range. Incorporating a 310 Vdc motor supply bus, the SD31045 provides stepper motors with plenty of power. Readily accessible DIP switches are an integrated feature that enable easy motor current and microstepping selection.

    Additionally, the SD31045 stepper drive incorporates hardware protection; specifically an interlock connection to prevent injury if the motor connector is removed while the driver is powered. Additional protections include short circuit protection - phase to phase and phase to ground- and overtemperature circuitry.

    The SD31045 4.5Arms stepper motor driver will interface with AMCI's complete line of high torque stepper motors, which range in frame size from NEMA 23 to NEMA 34. These motors have been tested and selected to perfectly match the electrical requirements of the SD31045.
    This combination of stepper motor driver and stepper motor provides the best performance for your application. Performance, price, and product all combine to offer you the best value.

    Available Versions

    SD31045: 4.5 Amp rms (6.3 A peak), 310 Volt driver, micro-stepping, 220 VAC input driver for all AMCI motors
    Price | $975/ea

    Note: Pricing is US Domestic only



    Consult the factory for availability

    Contact Sales

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    Electrical Specifications

    Microstepping Stepper Motor Drive - 4.5 Arms/6.4A peak (230VAC)
    Amplifier Type:Bipolar with two MOSFET H-bridges; RMS current control, 20 kHz PWM
    Number of phases:(2)
    Input voltage:95-264 Vac, 50/60 Hz
    Fault output voltage:open collector/emitter 30Vdc max & 20 mA max

    Operational Specifications

    Microstepping Stepper Motor Drive - 4.5 Arms/6.4A peak (230VAC)
    Current rating:4.5 Arms (average current) / 6.4A peak (peak current)

    NOTE: There are 2 ways to express the magnitude of current in microstepping stepper motor drivers, RMS and Peak. See tutorial on bottom of page for more info.

    1 amp RMS = 1.414 amp Peak.

    AMCI's SD31045 stepper motor drive is rated for 4.5 amp RMS or 6.4 amp Peak.
    Resolution:16 dipswitch selectable steps/rev: 200, 400, 1000, 2000, 5000, 10,000, 12,800, 18,000, 20,000, 21,600, 25,000, 25,400, 25,600, 36,000, 50,000, 50,800. Inputs are latchable and changes occur when power is cycled
    Maximum velocity:motor/load dependent
    Maximum input:frequency 2MHz
    Output current:1.0A - 4.5A rms selectable dipswitches in 0.1 amp increments
    Maximum operating temperature:50°C ambient temperature
    Idle current:0%, 50%, or 69% after 1 second without a step pulse
    Motor connections:eight lead series or parallel, six lead series or center tapped, or four lead motors using AMCI's standard motor connectors


    Motion Controllers

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    Ordering Information

    AMCI's sales team takes the hassle out of placing your order. We'll advise on product selection, alternatives, lead times, and present you with point of purchase options. Call (860) 585-1254 or email AMCI sales today! 

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