{"schemaVersion":1,"slug":"iec-capacitive-proximity-sensor-normally-open-3-wire","name":"IEC capacitive proximity sensor: normally open 3 wire","kind":"symbol","abbreviation":"CAP","aliases":["HPX11C3","VPX11C3","capacitive proximity sensor Normally Open 3 Wire"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"Capacitive proximity sensor form: Normally Open 3 Wire.","description":["A capacitive proximity sensor detects a change of capacitance caused by a target entering its sensing field. This entry identifies the normally open 3 wire form in the publisher's IEC-context family.","A vessel wall or nearby material can change the measured capacitance and indicate a level or presence condition. The normally-open designation starts with a non-conducting output or open 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.","Material, mounting, contamination and adjustment affect operation; a capacitive mark does not guarantee detection through every container or medium."],"readingNotes":["The normally-open designation starts with a non-conducting output or open 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.","Material, mounting, contamination and adjustment affect operation; a capacitive mark does not guarantee detection through every container or medium."],"drawingChecklist":["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."],"distinction":"This entry adds the normally open 3 wire detail to the broader capacitive proximity sensor family. Material, mounting, contamination and adjustment affect operation; a capacitive mark does not guarantee detection through every container or medium.","facts":[{"label":"Drawing form","value":"Normally Open 3 Wire"},{"label":"Public vendor block names","value":"HPX11C3 / VPX11C3. Autodesk identifiers, not standards database IDs."},{"label":"Drawing purpose","value":"capacitive proximity sensor"},{"label":"Graphic scope","value":"Independently authored educational illustration; not certified standard geometry, a terminal pinout or a product footprint."}],"references":[{"sourceId":"pub-symbol-capacitive-sensors","relevance":"Public Capacitive Switches table explicitly lists HPX11C3 / VPX11C3 with this operating or connection form. Vendor graphics are linked, not copied."}],"related":["capacitive-proximity-switch","plc-digital-input","terminal"],"artwork":"s28-iec-capacitive-proximity-sensor-normally-open-3-wire","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Normally Open 3 Wire","reference":"Autodesk IEC-60617 Symbol Preview: Capacitive Switches, HPX11C3 / VPX11C3. This identifies the publisher's library context; exact IEC graphics and database identities are not asserted."},"plainEnglish":{"title":"What does IEC capacitive proximity sensor: normally open 3 wire mean?","introduction":"A capacitive proximity sensor detects a change of capacitance caused by a target entering its sensing field. This entry identifies the normally open 3 wire form in the publisher's IEC-context family.","example":"A vessel wall or nearby material can change the measured capacitance and indicate a level or presence condition. The normally-open designation starts with a non-conducting output or open 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.","drawings":"Material, mounting, contamination and adjustment affect operation; a capacitive mark does not guarantee detection through every container or medium.","terms":[{"name":"Normally open / normally closed","meaning":"The contact state in the normal condition defined for the drawing."},{"name":"Terminal","meaning":"An identified point where a conductor connects."},{"name":"Signal","meaning":"Electrical information passed between devices, rather than necessarily the main power supply."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"AutoCAD Electrical: Capacitive proximity switches","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F2CC4639-9203-4C6A-8A9F-2A32717D2BE3.htm"}],"detail":"Capacitive proximity sensor form: Normally Open 3 Wire. This entry adds the normally open 3 wire detail to the broader capacitive proximity sensor family. Material, mounting, contamination and adjustment affect operation; a capacitive mark does not guarantee detection through every container or medium.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/iec-capacitive-proximity-sensor-normally-open-3-wire","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/iec-capacitive-proximity-sensor-normally-open-3-wire.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-capacitive-sensors","title":"AutoCAD Electrical: Capacitive proximity switches","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-F2CC4639-9203-4C6A-8A9F-2A32717D2BE3.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 Capacitive Switches table explicitly lists HPX11C3 / VPX11C3 with this operating or connection form. Vendor graphics are linked, not copied."}]}