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      X20SM1446-1

      Stepper Motor Module
      Ships by Thursday, November 12
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      B&R X20SM1446-1 is a full-bridge X20 stepper-motor module for one 24 to 48 VDC two-phase bipolar motor at 5 A nominal current. It combines 256-microstep control, four 24 V inputs, encoder evaluation, motor identification and stall detection.
      • Manufacturer part number
        X20SM1446-1
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        9.8cm x 2.5cm x 5.5cm
      • Country of Origin
        Austria

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete B&R X20SM1446-1 reference, label photographs and required quantity. Check the motor winding arrangement and configured current stages.

      • 1

        Confirm the offer

        Review the offered revision, condition, included items and documents against the confirmed installation.

      • 2

        Arrange dispatch

        Confirm quantity, dispatch date, lead-time start and delivery details in the quotation.

      • Match the complete marking

        Include the complete B&R X20SM1446-1 marking and any hardware revision on the item. Check the motor winding arrangement and configured current stages.

      • Check the offered item before ordering

        Request available label and connector photos. Have your maintenance team compare the offered X20SM1446-1 with the installed equipment and applicable B&R documents.

      Technical specifications for X20SM1446-1

      • Manufacturer:
        B&R
      • Product Category:
        PLC Systems
      • Spare Part Number:
        X20SM1446-1
      • Weight:
        0.06 kg
      • Tariff Code:
        8537101190
      • Motor channels:
        1 two-phase bipolar stepper motor
      • Motor supply:
        24 to 48 VDC ±25%
      • Nominal motor current:
        5 A
      • Peak motor current:
        10 A for 1 s
      • Microstep resolution:
        Up to 256 microsteps per step
      • Digital inputs:
        4 sink inputs at 24 VDC
      • Encoder function:
        1 ABR incremental encoder
      • Encoder input frequency:
        50 kHz maximum
      • Line fuse:
        10 A maximum, slow-blow
      • Input current limiting:
        12.5 A maximum
      • Electrical isolation:
        Channel isolated from bus
      • Protection rating:
        IP20
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • B&R X20SM1446-1 combines local motion generation with motor-current control, homing and encoder feedback for a single positioning axis.
      Motor channel: One two-phase bipolar full bridge
      Power stage: 24–48 V DC ±25%; 5 A nominal
      Positioning: Up to 256 microsteps per full step
      The full bridge drives a two-phase bipolar motor. Acceleration, running and holding current can be configured independently, allowing the electrical demand to follow the motion state instead of applying the maximum current continuously.

      Four 24 V inputs support reference switches, travel limits or an asymmetrical ABR encoder. Encoder evaluation and internally calculated position provide different feedback paths; configure the intended function before assigning the terminals.

      Motor identification evaluates the winding characteristics, while a configurable stall threshold monitors loading. Communication life-sign supervision and supply or temperature monitoring can shut down the motor; these operating functions must be evaluated within the machine safety design.
      Controller platform reference: B&R X20 motion I/O. Use the motor and terminal configuration approved for the axis.
      The original technical excerpt applicable to B&R X20SM1446-1 covers motor bridge ratings, diagnostics, pin allocation and input functions. The separate installation guide covers motor wiring, current stages, homing, encoder feedback and load tests.
      Original manufacturer pages retain their technical context. Use the Apter Power guide with the applicable manufacturer instructions and approved installation design.
      System and supply context: The module occupies an X20 motor-control position; the motor, terminal block and bus module form the surrounding installation.

      Application scope: Suitable motion functions include indexed travel, homing and load-supervised positioning within the configured motor limits.
      Prepare B&R X20SM1446-1 for its configured installation using these checks.
      Motor current

      Set winding current for the connected motor; limit 10 A demand to one second.

      Supply protection

      Provide the required slow-blow line fuse of no more than 10 A.

      Shared inputs

      Resolve the choice between ABR feedback, reference switches and digital inputs.

      Movement boundary

      Test travel limits at controlled speed before normal production.

      Stall threshold

      Establish the threshold with the actual motor, load and acceleration.

      Restart behavior

      Evaluate recovery after supply, temperature or communication shutdown.

      Alternative Names

      X20SM1446 1 B&R X20SM1446-1

      Technical notes

      Signal and interface: The 10 A peak rating is limited to one second. Match winding current, motion duty and supply capacity rather than treating it as a continuous rating.

      Installation boundary: The 24 V input circuitry is not a 5 V encoder interface. The channel is isolated from the bus but not from its I/O supply.

      Technical basis: B&R X20SM1446-1 Data sheet V1.56. Ratings apply to the X20SM1446-1 motor bridge and its specified supply and mounting conditions.

      FAQ View All FAQ

      • Which motor can B&R X20SM1446-1 control?
        It controls one two-phase bipolar stepper motor supplied at 24 to 48 VDC ±25% with 5 A nominal current.
      • What peak current is available from B&R X20SM1446-1?
        The peak rating is 10 A maximum for one second, while continuous nominal motor current is 5 A.
      • How fine is the step resolution of B&R X20SM1446-1?
        The module supports up to 256 microsteps per full step, with current automatically matched to the configured values.
      • Can B&R X20SM1446-1 evaluate an encoder?
        Yes. Its four 24 V inputs can be configured for one asymmetrical ABR incremental encoder up to 50 kHz.
      • What fuse is required for B&R X20SM1446-1?
        B&R requires an external motor-supply line fuse rated no more than 10 A with slow-blow characteristic.
      • What does motor identification do on B&R X20SM1446-1?
        It evaluates coil characteristics and returns feedback that can reveal wiring errors or an incorrect motor type.
      • How should stall detection be set on B&R X20SM1446-1?
        Define the threshold from controlled tests with the actual motor, load and motion profile; do not copy it from another axis.
      • What proves successful B&R X20SM1446-1 commissioning?
        Verify direction, current stages, microstep motion, four inputs, encoder feedback, limits, stall response and safe stopping on the installed mechanism.
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