{"schemaVersion":1,"slug":"ansi-permanent-magnet-stepping-motor","name":"ANSI/IEEE Permanent-magnet stepping motor form","kind":"symbol","abbreviation":"HMO1M15","aliases":["HMO1M15","VMO1M15","IEEE DC Motor - Stepping with Permanent Magnets","ANSI Permanent-magnet stepping motor"],"category":"power-distribution","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library form of permanent-magnet stepping motor: this representation identifies a permanent-magnet stepping-motor function.","description":["This reference locates permanent-magnet stepping motor in Autodesk's IEEE-oriented dc motors family. This representation identifies a permanent-magnet stepping-motor function. The public library uses HMO1M15 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","Trace each winding, supply and accessible neutral through the complete machine or transformer connection diagram. Keep the phase arrangement, terminal labels and any clock notation attached to the device; neither the convention label nor this educational outline supplies its ratings.","Cross-reference the phase/drive connections and the specified step-control interface. A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption. Cross-reference the phase/drive connections and the specified step-control interface. A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted."],"readingNotes":["Cross-reference the phase/drive connections and the specified step-control interface.","A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","Cross-reference the phase/drive connections and the specified step-control interface.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: DC Motors; published form: DC Motor - Stepping with Permanent Magnets."},{"label":"Public vendor block","value":"HMO1M15. Vendor library token, not an IEEE symbol number."},{"label":"Information added","value":"Cross-reference the phase/drive connections and the specified step-control interface."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"},{"label":"Artwork scope","value":"Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified."}],"references":[{"sourceId":"ansi-autodesk-6a65d995-18bc-4a3c-a34e-c6bb276e8410","relevance":"Public IEEE-oriented DC Motors table explicitly lists HMO1M15 as DC Motor - Stepping with Permanent Magnets. This supports the vendor convention context, not reproduction of the publisher graphic."}],"related":["iec-permanent-magnet-stepping-motor","motor","generator"],"artwork":"s28-ansi-permanent-magnet-stepping-motor","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"DC Motor - Stepping with Permanent Magnets","reference":"Autodesk IEEE Symbol Preview: DC Motors, block HMO1M15. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.","counterpart":"iec-permanent-magnet-stepping-motor"},"plainEnglish":{"title":"What does ANSI/IEEE Permanent-magnet stepping motor form mean?","introduction":"This reference locates permanent-magnet stepping motor in Autodesk's IEEE-oriented dc motors family. This representation identifies a permanent-magnet stepping-motor function. The public library uses HMO1M15 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","example":"Trace each winding, supply and accessible neutral through the complete machine or transformer connection diagram. Keep the phase arrangement, terminal labels and any clock notation attached to the device; neither the convention label nor this educational outline supplies its ratings.","drawings":"Cross-reference the phase/drive connections and the specified step-control interface. A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption. Cross-reference the phase/drive connections and the specified step-control interface. A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.","terms":[{"name":"DC","meaning":"Direct current: electricity flowing in one direction."},{"name":"Winding","meaning":"A coil of conductor inside an electrical machine or transformer."},{"name":"Phase","meaning":"One of the related AC waveforms in a power system."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview — DC Motors","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-6A65D995-18BC-4A3C-A34E-C6BB276E8410.htm"}],"detail":"IEEE-library form of permanent-magnet stepping motor: this representation identifies a permanent-magnet stepping-motor function. A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-permanent-magnet-stepping-motor","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-permanent-magnet-stepping-motor.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"ansi-autodesk-6a65d995-18bc-4a3c-a34e-c6bb276e8410","title":"Autodesk IEEE Symbol Preview — DC Motors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-6A65D995-18BC-4A3C-A34E-C6BB276E8410.htm","type":"cad-reference","scope":"Verified public IEEE-oriented vendor catalogue. Block names identify vendor symbols, not IEEE standard symbol numbers. Linked only; graphics and CAD files are not redistributed. IEEE/ANSI 315-1975 is a historical graphics reference with Inactive-Reserved status; this page does not certify current standards compliance.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public IEEE-oriented DC Motors table explicitly lists HMO1M15 as DC Motor - Stepping with Permanent Magnets. This supports the vendor convention context, not reproduction of the publisher graphic."}]}