IEEE / ANSI · HMO1M15

ANSI/IEEE Permanent-magnet stepping motor form

IEEE-library form of permanent-magnet stepping motor: this representation identifies a permanent-magnet stepping-motor function.

In plain English

What does ANSI/IEEE Permanent-magnet stepping motor form mean?

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.

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

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.

This particular reference

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.

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 - Stepping with Permanent Magnets

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.

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

SLD / Schematic · HMO1M15ANSI/IEEE Permanent-magnet stepping motor form: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

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.

How to read it

  • 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.

Information to show or reference

  • 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.

A distinction that matters

A stepping motor requires a drive sequence rather than an ordinary continuously applied DC supply assumption.

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 HMO1M15 as DC Motor - Stepping with Permanent Magnets. 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

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