IEEE / ANSI · M DC SEP

ANSI/IEEE Separately excited DC motor form

IEEE-library form of separately excited dc motor: a separately excited DC motor has a documented field circuit supplied separately from the armature circuit.

In plain English

What does ANSI/IEEE Separately excited DC motor form mean?

This reference locates separately excited dc motor in Autodesk's IEEE-oriented dc motors family. A separately excited DC motor has a documented field circuit supplied separately from the armature circuit. The schematic must show both supplies and their relevant controls. The public library uses HMO1M12 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

A simple 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.

Identify the device and formRead the connections and stateCheck the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

What the drawings help you do

Trace the field source independently from armature power. Separately excited and series-excited motors do not share the same field-current path. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.

This particular reference

IEEE-library form of separately excited dc motor: a separately excited DC motor has a documented field circuit supplied separately from the armature circuit. Separately excited and series-excited motors do not share the same field-current path.

DC
Direct current: electricity flowing in one direction.
Winding
A coil of conductor inside an electrical machine or transformer.
Phase
One of the related AC waveforms in a power system.

Read the source: Autodesk IEEE Symbol Preview — DC Motors

IEEE / ANSI · DC Motor - Independent Excitation

Autodesk IEEE Symbol Preview: DC Motors, block HMO1M12. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.

Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.

SLD / Schematic · M DC SEPANSI/IEEE Separately excited DC motor form: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

This reference locates separately excited dc motor in Autodesk's IEEE-oriented dc motors family. A separately excited DC motor has a documented field circuit supplied separately from the armature circuit. The schematic must show both supplies and their relevant controls. The public library uses HMO1M12 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.

Trace the field source independently from armature power. Separately excited and series-excited motors do not share the same field-current path. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.

How to read it

  • Trace the field source independently from armature power.
  • The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.

Information to show or reference

  • Identify field supply
  • Identify armature supply
  • Reference coordinated control sequence

A distinction that matters

Separately excited and series-excited motors do not share the same field-current path.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

Autodesk IEEE Symbol Preview — DC Motors

Public IEEE-oriented DC Motors table explicitly lists HMO1M12 as DC Motor - Independent Excitation. This supports the vendor convention context, not reproduction of the publisher graphic.

Autodesk · Public reference checked 14 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 28 October 2026

Put the reference into a drawing workflow.

Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.

Explore drafting