HAN1B
Audible bell
A bell indication identifies an audible annunciation output in a control circuit.
IEC
IEEE / ANSI · HAN1B
ANSI/IEEE Audible bell form
IEEE-library form of audible bell: a bell indication identifies an audible annunciation output in a control circuit.
In plain English
What does ANSI/IEEE Audible bell form mean?
This reference locates audible bell in Autodesk's IEEE-oriented miscellaneous family. A bell indication identifies an audible alarm indication output in a control circuit. The public library uses HAN1B for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.
What the drawings help you do
Label the alarm purpose, supply and control contact. A bell symbol does not establish sound level or alarm priority. Label the alarm purpose, supply and control contact. A bell symbol does not establish sound level or alarm priority. 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 audible bell: a bell indication identifies an audible alarm indication output in a control circuit. A bell symbol does not establish sound level or alarm priority.
- Normally open / normally closed
- The contact state in the normal condition defined for the drawing.
- Terminal
- An identified point where a conductor connects.
- Signal
- Electrical information passed between devices, rather than necessarily the main power supply.
Read the source: Autodesk IEEE Symbol Preview — Miscellaneous
IEEE / ANSI · Bell
Autodesk IEEE Symbol Preview: Miscellaneous, block HAN1B. 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.
Schematic · HAN1B
What it represents
This reference locates audible bell in Autodesk's IEEE-oriented miscellaneous family. A bell indication identifies an audible annunciation output in a control circuit. The public library uses HAN1B for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.
Label the alarm purpose, supply and control contact. A bell symbol does not establish sound level or alarm priority. Label the alarm purpose, supply and control contact. A bell symbol does not establish sound level or alarm priority. 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
- Label the alarm purpose, supply and control contact.
- A bell symbol does not establish sound level or alarm priority.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Label the alarm purpose, supply and control contact.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
A bell symbol does not establish sound level or alarm priority.
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 — Miscellaneous
Public IEEE-oriented Miscellaneous table explicitly lists HAN1B as Bell. This supports the vendor convention context, not reproduction of the publisher graphic.
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.
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