HPX1U
Ultrasonic proximity switch
An ultrasonic-switch representation identifies presence or distance switching using an ultrasonic sensing principle.
IEC
IEC · US
IEC ultrasonic proximity sensor: normally closed 3 wire with connector
Ultrasonic proximity sensor form: Normally Closed 3 Wire with connector.
In plain English
What does IEC ultrasonic proximity sensor: normally closed 3 wire with connector mean?
An ultrasonic proximity sensor uses sound above the audible range to detect a target or measure a return echo. This entry identifies the normally closed 3 wire with connector form in the publisher's IEC-context family.
A simple example
A container-presence input can switch when the target enters the configured sensing window. The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state. The three-wire form distinguishes supply, return and switching output. Confirm sourcing or sinking operation from the actual sensor circuit before connecting it to an input.
What the drawings help you do
The connector variant adds a separable field interface. Keep the mating connector designation, pin numbers and cable-core mapping visible at that boundary. Blind zone, target angle and environmental effects remain device-specific. The symbol alone does not state the operating distance or switching threshold.
This particular reference
Ultrasonic proximity sensor form: Normally Closed 3 Wire with connector. This entry adds the normally closed 3 wire with connector detail to the broader ultrasonic proximity sensor family. Blind zone, target angle and environmental effects remain device-specific. The symbol alone does not state the operating distance or switching threshold.
- 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 IEC-60617 preview: Ultrasonic switch forms
IEC · Normally Closed 3 Wire with connector
Autodesk IEC-60617 Symbol Preview: Ultrasonic Switches, HPX12U3C / VPX12U3C. This identifies the publisher's library context; exact IEC graphics and database identities are not asserted.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · US
What it represents
An ultrasonic proximity sensor uses sound above the audible range to detect a target or measure a return echo. This entry identifies the normally closed 3 wire with connector form in the publisher's IEC-context family.
A container-presence input can switch when the target enters the configured sensing window. The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state. The three-wire form distinguishes supply, return and switching output. Confirm sourcing or sinking operation from the actual sensor circuit before connecting it to an input.
The connector variant adds a separable field interface. Keep the mating connector designation, pin numbers and cable-core mapping visible at that boundary. Blind zone, target angle and environmental effects remain device-specific. The symbol alone does not state the operating distance or switching threshold.
How to read it
- The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state.
- The three-wire form distinguishes supply, return and switching output. Confirm sourcing or sinking operation from the actual sensor circuit before connecting it to an input.
- The connector variant adds a separable field interface. Keep the mating connector designation, pin numbers and cable-core mapping visible at that boundary.
- Blind zone, target angle and environmental effects remain device-specific. The symbol alone does not state the operating distance or switching threshold.
Information to show or reference
- Identify the target, sensing mode and expected normal condition.
- Label supply, output and connector pins from the actual device diagram.
- Reference output circuit type, operating range and controller input.
A distinction that matters
This entry adds the normally closed 3 wire with connector detail to the broader ultrasonic proximity sensor family. Blind zone, target angle and environmental effects remain device-specific. The symbol alone does not state the operating distance or switching threshold.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Ultrasonic switch forms
Public Ultrasonic Switches table explicitly lists HPX12U3C / VPX12U3C with this operating or connection form. Vendor graphics are linked, not copied.
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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