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      X20SM1446-1

      Stepper Motor Module
      In Stock
      Ships by Tuesday, September 22
      Fast Shipping Available

      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.

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      Technical specifications Information Revisions Alternative names Technical notes FAQ

      Technical specifications for X20SM1446-1

      Technical specifications for X20SM1446-1

      • Manufacturer:
        B&R
      • Product Category:
        PLC Systems
      • Spare Part Number:
        X20SM1446-1
      • Estimated shipping dimensions:
        9.8x2.5x5.5cm
      • Weight:
        0.06 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        Austria
      • 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
      • B&R ID code:
        0xF3B0
      • Protection rating:
        IP20
      • Required hardware:
        X20TB12 terminal block and X20BM31 bus module
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      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.
      • Controls one two-phase bipolar stepper motor from a full bridge
      • Generates up to 256 microsteps with separately adjustable current stages
      • Uses motor identification and stall detection for commissioning feedback
      • Accepts four limit-switch or ABR encoder inputs at 24 VDC

      Install B&R X20SM1446-1 with X20TB12 and X20BM31 and protect the external motor supply with a maximum 10 A slow-blow line fuse. Record motor coil data, configure boost, nominal and holding current, then prove direction, limits, encoder feedback and stall response at controlled speed.

      Important Notice: Confirm B&R X20SM1446-1, terminal hardware, field wiring, installed accessories and current B&R documentation before commissioning.

      Apter Power B&R X20SM1446-1 Manuals and Guides
      Apter Power B&R X20SM1446-1 Product and System Technical Reference PDFB&R X20SM1446-1 Official Data Sheet V1.56 PDF

      Important Notice: The first document is an Apter Power model-specific technical reference; the second is the B&R official data sheet identified in the manufacturer source record.

      Indexed positioning axis
      B&R X20SM1446-1 drives a single stepper axis with configurable microstep and current profiles.
      Machine feed mechanism
      Four digital inputs support limit, reference or encoder signals around the commanded motion.
      Compact CNC auxiliary axis
      Automation Studio and CNC integration coordinate the documented stepper function with machine control.
      Energy-aware holding control
      Load-dependent current reduction lowers holding current where the configured motor and duty permit it.
      Read the applicable B&R instructions before work. Verify B&R X20SM1446-1 and the installed X20 System configuration.
      1
      Confirm the full B&R X20SM1446-1 marking and assigned mechanical axis before work.
      2
      Remove the external motor supply and place the driven mechanism in a secured state.
      3
      Use X20TB12 and X20BM31 and verify the double-width module position.
      4
      Fit a maximum 10 A slow-blow fuse in the external motor-supply line.
      5
      Record motor coil current, connection sequence, rotation direction and mechanical travel limits.
      6
      Configure boost, nominal and holding current to the installed motor instead of copying another axis.
      7
      Verify all four 24 V inputs, including limit-switch or ABR encoder assignments.
      8
      Commission at controlled speed and prove motor identification, stall threshold, travel limits and safe stop.

      Revisions

      Revisions

      Revision Part #

      Also known as

      Data sheet X20SM1446-1
      B&R version 1.56, 2025-11-27
      Get Parts Quote

      Alternative Names

      Alternative Names

      B&R X20SM1446-1

      Technical notes

      Technical notes

      Install B&R X20SM1446-1 with X20TB12 and X20BM31 and protect the external motor supply with a maximum 10 A slow-blow line fuse. Record motor coil data, configure boost, nominal and holding current, then prove direction, limits, encoder feedback and stall response at controlled speed.

      FAQS

      • 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 official data lists 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.
      Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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