{"schemaVersion":1,"slug":"series-excited-dc-motor","name":"Series-excited DC motor","kind":"symbol","abbreviation":"M DC SERIES","aliases":["HMO1M7","VMO1M7"],"category":"power-distribution","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A series-excited DC motor connects its documented field winding in series with the armature circuit.","description":["A series-excited DC motor connects its documented field winding in series with the armature circuit. Both winding and armature terminals need to remain identifiable in expanded schematics."],"readingNotes":["Follow the field current through the armature path.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Show series field connection","Identify armature terminals","Reference starting/control arrangement"],"distinction":"A series field and a shunt field have different circuit connections.","facts":[{"label":"Drawing role","value":"Rotating or linear load"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HMO1M7, VMO1M7 (Autodesk identifiers; not IEC symbol numbers)"},{"label":"Identifier status","value":"The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name."}],"references":[{"sourceId":"pub-symbol-dc-motors","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["motor","contactor"],"artwork":"edu-series-excited-dc-motor","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/series-excited-dc-motor","illustration":{"url":"https://eloragrid.ai/library/illustrations/series-excited-dc-motor.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-symbol-dc-motors","title":"AutoCAD Electrical: DC motors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F5F3061F-E0DE-4A9A-BE88-C017545A9A36.htm","type":"cad-reference","scope":"Public vendor catalogue naming and functional variants. Vendor block names are not IEC identifiers. Linked for reference; no graphics or CAD files are redistributed.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}]}