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      81001-451-63-R

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

      Product Describe：

      Allen-Bradley 81001-451-63-R is a PowerFlex 7000 matched triple of 1500 A SGCT power devices.
      • Manufacturer part number
        81001-451-63-R
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        29.2cm x 20.7cm x 5.5cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete Allen-Bradley 81001-451-63-R reference, label photographs and required quantity. Include the installed drive and all 3 matched device positions.

      • 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 Allen-Bradley 81001-451-63-R marking and any hardware revision on the item. Include the installed drive and all 3 matched device positions.

      • Check the offered item before ordering

        Request available label and connector photos. Have your maintenance team compare the offered 81001-451-63-R with the installed equipment and applicable Allen-Bradley documentation.

      Technical specifications for 81001-451-63-R

      • Manufacturer:
        Allen-Bradley
      • Product Category:
        General Automation
      • Spare Part Number:
        81001-451-63-R
      • Weight:
        1.56 kg
      • Tariff Code:
        8537101190
      • Device technology:
        SGCT
      • Device class:
        1500 A
      • Matched device count:
        3
      • Assembly form:
        matched triple
      • Command transmission:
        Fiber-optic
      • Diagnostic return:
        Fiber-optic
      • Offline gate-supply window:
        19.6-20.4 V
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Allen-Bradley 81001-451-63-R restores a defined matched group in the drive switching structure. Device matching, optical gating and diagnostic feedback must be assessed together at the affected power assembly.
      Device current class: 1500 A
      Matched group: 3 SGCT devices
      Control path: Optical gate command and diagnostic feedback
      This matched triple contains 3 devices in the 1500 A SGCT class. The matching identity applies to the group and must remain traceable during replacement. Neither multiplying the device count nor comparing current markings establishes the complete drive rating or an alternative assembly.

      The drive compares feedback around a gate event during its Offline diagnostic sequence. Feedback remaining low directs a feedback-loss investigation; feedback remaining high directs a gating-loss investigation. The physical device position, firing-card indications and optical path help distinguish these cases.

      The associated nominal 20 V firing source, secure power connections, optical interfaces and SGCT resistance checks are part of the diagnostic process. Complete the prescribed Gating Test and investigate associated motor-filter-capacitor causes where indicated before restarting the drive.
      Controller platform reference: PowerFlex 7000 switching structure. Retain matched-set identity and device-position records.
      The original technical excerpt for Allen-Bradley 81001-451-63-R covers SGCT diagnostic logic and exact matched-set identification. The separate installation guide covers matched-group retention, optical paths, auxiliary power and drive 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 matched triple requires the corresponding PowerFlex 7000 power assembly. Gate supplies, optical boards and other drive hardware are separate unless itemized.

      Application scope: Use the complete spare identity and affected device positions to select the repair. Current class alone does not establish interchangeability.
      Prepare Allen-Bradley 81001-451-63-R for its configured installation using these checks.
      Retain matching

      Keep all group labels and device positions together.

      Prove isolation

      Apply the medium-voltage service and discharge procedure.

      Protect optical paths

      Avoid crossed, damaged or pinched gate and return fibers.

      Check auxiliary power

      Verify the firing source and seated connections.

      Interpret resistance carefully

      A nonzero resistance alone does not prove device health.

      Resolve the original fault

      Confirm diagnostic recovery before restarting the drive.

      Alternative Names

      81001 451 63 R Allen-Bradley 81001-451-63-R

      Technical notes

      Set traceability: Keep all three matched devices associated with their supplied set and assigned converter positions. Device-current class is not a summed drive-output rating.

      Offline diagnosis: Compare gate-command, feedback and local supply behavior before replacing a device; an optical or auxiliary-power fault can interrupt the same diagnostic path.

      FAQ View All FAQ

      • What matching relationship is supplied by 81001-451-63-R?
        The part is a matched set of three 1500 A SGCTs. Preserve the set identity; three unrelated singles do not establish the same matching relationship.
      • Is 4500 A the drive rating implied by 81001-451-63-R?
        No. The three devices are individually in the 1500 A class. Their count cannot be added to derive the complete drive current rating.
      • Why must all positions associated with 81001-451-63-R remain traceable?
        Drive diagnostics identify the phase and device position. Keep those identities with each optical gate lead, feedback lead and firing-card power connection when removing the set.
      • What does persistent low feedback indicate during an Offline check of 81001-451-63-R?
        The drive compares feedback before and after gating. A low state that does not change directs investigation toward feedback loss, including the optical return, connections and device condition.
      • Can a complete short-circuit test alone qualify the devices in 81001-451-63-R?
        No. A failed SGCT may retain resistance in the kilohm range. Use the prescribed resistance test and correlate the result with gate-driver and drive diagnostics.
      • What auxiliary voltage window is used in the Offline diagnostic for 81001-451-63-R?
        The associated nominal 20 V gate supply is checked at 19.6-20.4 V. This is a firing-circuit condition, not a semiconductor blocking-voltage specification.
      • How can an upstream optical-interface connection prevent 81001-451-63-R from receiving a gate command?
        A fault in the DPM-to-OIB connection or the optical gate path can leave feedback high before and after the gate event. Inspect that path before concluding that all three power devices have failed.
      • When should operation resume after changing 81001-451-63-R?
        After the drive-specific resistance, gate-driver and Gating Test checks agree and the original diagnostic cause has been resolved. Maintain the matched-set and phase-position record through the controlled restart.
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